How to Tell if my Water Pump is Bad

how to tell if my water pump is badHaving a bad water pump can cause a lot of problems with your vehicle.  If you’re asking “how to tell if my water pump is bad”, then you’re probably already experiencing some of the problems associated with it.

What does a water pump do?

The water pump is the main force behind a car’s cooling system allowing it to operate correctly. Every vehicle on the road today is equipped with a radiator at the front of the car to cool the antifreeze in your vehicle.  In most vehicles, the water pump draws the coolant out of the radiator and pushes it into your engine block, cylinder heads and any other components that need to be cooled like an oil cooler, the throttle body or turbocharger if your engine is equipped.  From there, your engine coolant is pushed, still by the pressure of your engine’s water pump, back into your radiator to be cooled and start the journey again.

If the water pump in your car fails, the motive force for the coolant quickly goes away allowing the water in the engine to heat up very quickly and your engine to overheat, possibly causing damage.  There are really 3 main ways your water pump can fail, catastrophic failure, bearing failure or seal failure.

First, catastrophic failure to your water pump is possible but unlikely.  This would include things like the actual pump impeller coming off the shaft, pump blades chipping or falling off or other damage that would cause water to stop flowing.  Although unlikely, this type of water pump failure is the most dangerous.  Catastrophic failure of your water pump will cause either a complete or partial loss of coolant flow and rapid overheating.  If this happens to your vehicle, it may be accompanied by engine noise or a broken engine belt, but will definitely result in your engine temperature gauge rising quickly.  If this happens to you, quickly pull over and shut down your engine.

How to tell if my water pump is badA more likely failure of your engine’s water pump is a bearing failure.  Your engine’s water pump is spinning with your engine so the bearing in your water pump can wear out the same as any other bearing in your vehicle.  Your water pump bearing is either a sealed bearing or lubricated simply by the coolant so it has the opportunity to wear out much more quickly than the oil lubricated bearings in your engine.  A worn bearing in your water pump will usually manifest itself as pump noise as it will allow the pump pulley to wobble as it rotates.  In extreme cases, you may be able to see the pump pulley or belt wobbling as your engine idles.  With your engine off and cold, you can try grabbing the water pump pulley and wiggle it to see if you can feel bearing movement.  If you do, the best option is to simply replace your water pump.

The last way your water pump can fail is a seal failure.  This can include the shaft seal or the water pump seal to the block.  The shaft seal can fail due to wear or a bad bearing and the block seal can fail due to overheating, improper installation or simply old age.

If the shaft seal is worn and leaking in your water pump, the best course of action is to simply replace the pump.  If you’ve got a water pump to block seal leak it is important to check around the water pump for cracks in your block first.  The area around your water pump is due to significant amounts of stress due to the heating and cooling of your engine in that area and can be prone to cracking.  A crack in this area will leak small amounts of coolant, especially when warm, and can easily be confused for a water pump seal leak.

If you do discover a cracked block near your water pump, you can quickly and easily seal the leak using BlueDevil Radiator and Block Sealer.  BlueDevil Radiator and Block Sealer is specially formulated to seek out cracks in your radiator and block and form a seal and stop the leak.  BlueDevil Radiator and Block Sealer seals the leak in your block without clogging or harming any other area of your cooling system!

For more information about BlueDevil Radiator and Block Sealer, click on the banner below!
00205_blocksealer
 

You can purchase BlueDevil Radiator and Block Sealer at any of our partnering local auto parts stores like:

  • AutoZone
  • Advance Auto Parts
  • Bennett Auto Supply
  • CarQuest Auto parts
  • NAPA Auto Parts
  • O’Reilly Auto Parts
  • Pep Boys
  • Fast Track
  • Bumper to Bumper Auto Parts Specialists
  • S&E Quick Lube Distributer
  • DYK Automotive
  • Fisher Auto Parts stores
  • Auto Plus Auto Parts stores
  • Hovis Auto & Truck Supply stores
  • Salvo Auto Parts
  • Advantage Auto Stores
  • Genuine Auto Parts stores
  • Bond Auto Parts stores
  • Tidewater Fleet Supply
  • Bumper to Bumper Auto Parts
  • Any Part Auto Parts
  • Consumer Auto Parts

 

Pictures Provided By:

water_pump.jpg – By ooiphotoo – Licensed by Getty Images – Original Link
water_pump_pulley.jpg – By AppleEyesStudio – Licensed by Getty Images – Original Link

73 responses to “How to Tell if my Water Pump is Bad

    1. J. Taylor-Bey-

      If the water pump stopped working while you were driving the vehicle, the circulation of water/coolant would be greatly restricted, water/coolant flow would stop and the vehicle would eventually start to overheat. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      1. Hey guys… I have a 1999 ford ranger. My car is over heating but my coolant is full and my radiator is dry. It won’t over heat if I put coolant in the radiator. It’s also leaking. I can tell if the water pump is bad or just a leak.

        1. Matthew,

          Thanks for your question about your 1999 Ford Ranger. If your coolant reservoir is full but your radiator is not then you have a leak somewhere in your system. The leak point will let coolant out when the system is hot then it is allowing air to get pulled back into the system as it cools rather than pulling coolant from the reservoir into the radiator. It’s possible this leak is anywhere but our guess would be that it’s high in the system like a heater core hose or thermostat housing gasket. The best way to find leaks like this is the pressure test your system and watch for leaks when the system is at or slightly over the pressure the radiator cap releases at.

          Thanks again for your question!
          -BD Auto Pro

      2. Two days ago my car overheated but went back down to the middle. Got home and checked there was no water in the reserve . Filled it with water and when I got back from store 5 mile round trip the reserve was empty again. Can you tell me why ?

        1. Cecelia-

          Water/coolant will pull from the reservoir as needed. If it is emptying that quickly, it may indicate that you are losing water through a leak point somewhere throughout the cooling system. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

          Thank you!

          -BDP

  1. I have a 2014 Cruze- notorious for heating/cooling issues. Just replaced a few things due to leaks, however I am now getting a coolant smell through the vents but only when I’m idling in drive. No smell while idling in Park. Also- car smells hot, but temperature gauge remains normal. Has been suggested that it could be a bad water pump. Thoughts?

    1. Jessie-

      Thank you for asking about your Chevy Cruze. Depending on the manufacturer, it is typically recommended to have the water pump replaced every 90,000 miles. However, if the vehicle isn’t overheating, more than likely, the water pump is functioning properly. Are you still continuing to lose water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  2. Hello
    I have ford taurus 2015 SE 3.6 V6. I had a minor front accident, which broke front bumper grill and shutter grill and the radiator is fine. One mechanic checked it and told me that the water pump is effected and failing slowly. My question is that is it possible that it’s failing too slowly in my case, whereas, my car did not reduce any amount of coolant water, no smells, no water marks under, with highway drive plus city drive. with and without AC. The car is fine but i have the doubt about what mechanic is saying
    Please guide
    Bundle of thanks

    1. Asif-

      Thank you for asking about your Ford Taurus. It is possible that the mechanic could have inspected the water pump and found a seep or some kind of build up, leading him to believe the water pump was starting to go. You wouldn’t necessarily see water/coolant dripping or leaving a mark on the ground. It is also possible that you wouldn’t really be noticing a loss of water/coolant, especially if it is in the beginning stages of starting to fail. The water pump is responsible for circulating water/coolant throughout the system and is typically recommended to be replaced every 90,000-100,000 miles. Based on your description, it would be a good idea to have the water pump replaced to prevent further issues from happening down the road.

      Thank you!

      -BDP

  3. Thanks Blue devil pro for previous reply.
    Can you please guide about octane also. Does octane affects car’s acceleration? and power?. I was previously using 95 octane, now i am using 91 octane and tires are not spinning. whereas, on 95 octane car was doing good burnout. Does that mean that car’s power is reduced. or it has something to do with tire traction, weather etc.

    1. Asif,

      Thanks for your question about octane. It is possible that using lower octane is reducing the amount of power your car can make. The higher the octane rating of the fuel, the more resistant it will be to knocking or preignition. If using a lower octane fuel is causing knocking, your motor will sense that and reduce the engine timing to compensate for the lower octane fuel. Reduced timing means less power and could be what is causing your car to not have enough power to spin the wheels.

      Thanks again for your question!
      -BD Auto Pro

  4. I have a 08 Impala 3.5 engine. V6. I was told my water pump is leaking coolant . I was wondering if you a product that would repair the leak?

    1. Bob-

      Thank you for asking about your Chevy Impala. Unfortunately, we do not manufacture a product intended to stop water pump leaks. Having the water pump replaced may be your best option.

      Thank you!

      -BDP

  5. Hello guys 🙂
    I have a ford focus 2.0 TDCi that i was driving last week and i noticed some kind of smoke coming out the engine and i pulled over i noticed that my engine was waay hot than normal, but what puzzled me is that the expansion tank water was at normal temp so was my gauge. what could be the problem?

    1. Malvern-

      Thank you for asking about your Ford Focus. How many miles are on the vehicle? Typically, it is recommended to replace the water pump at 90,000 – 100,000 mile intervals. If it has reached or surpassed that mileage, it would be a good idea to replace the water pump. The smoke you are seeing could be due to water/coolant leaking from the water pump gasket on to the engine but, you would also be seeing the temperature guage rising in most cases. If the issue continues, you may want to bring it to a shop for a proper diagnosis.

      Thank you!

      -BDP

    1. Samuel-

      Is the vehicle overheating at all? You can check the thermostat to see if it’s functioning properly by removing it and placing it in boiling water, to see if its opening at the proper temperature.

      Hope this helps!

      -BDP

      1. I have a 2001 Ford Taurus I was just wondering it started making a loud screeching sound could that be the cause of a water pump going bad
        If I put Blue Devil in my 2001 Ford Taurus water pump would that stop the screeching sound

        1. Creighton-

          Thank you for asking about your Ford Taurus. Is the vehicle overheating at all? Have you noticed a loss of water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations. Unfortunately, we do not manufacture a product intended to stop leaks from the water pump.

          Thank you!

          -BDP

  6. I have a pontiac g6 it overheats quickly and causes the car to not have acceleration i changed the thermostat and the top radiator hose as well due to a hole hopefully its nothing serious as blown head

    1. Courtney-

      Thank you for asking about your Pontiac g6. Your next step may be to have the water pump replaced. If the circulation of water/coolant is poor, it could cause the vehicle to overheat rather quickly.

      Thank you!

      -BDP

  7. Toyota sienna 2004 213000 mile. Car was perfect drove yesterday A/c felt like had no gas and just throwing Air parked the car notice cold air is coming out. Turn A/c off then realized my car was over heated. Filled up Antifreeze to top drive 2 mile car start to heat again. I cannot see no leaks. Water pump fill cold pump coming out from coolent reserve tank seems as it going away but the small pipe to the engine is way to hot. The guy that help me said it’s my water pipe is that even making any sense?

    1. Shira-

      Thank you for asking about your Toyota Sienna. Based on your description, it is possible that a faulty water pump is the reason your vehicle is overheating. If the flow in the cooing system is being restricted, and overheating that quickly, it is most likely time for a water pump replacement. You can also check to see that the thermostat is functioning properly and opening up as it should. A faulty thermostat could also cause the vehicle to overheat, as you have described.

      Thank you!

      -BDP

    1. Ron,

      Thanks for your question about your car overheating. If your car is overheating, but not all the time it could be caused by a clog in your radiator or a problem with your water pump. Similarly, a low cooling system level can cause overheating if the ambient temperature fluctuates drastically from day to day or the distance you travel each trip fluctuates also.

      Thanks again for your question!
      -BD Auto Pro

  8. So I have an 04 2.4l eclipse that I’m having an overheating issue with, I’ve replaced the radiator, the thermostat. Coolant, checked all the hoses and the water pump. Now the car only overheats after I’ve driven for a while and had 2 stop alot or if it’s really hot outside n I stop only a few times, but averages maybe 20 miles before any kind of overheating starts.once the overheating starts it goes to about a quarter of the way from the top n just kinda sticks there. Sometimes it will go back down in temperature if I have a straight drive with no stops. I’ve tried everything including a compression test that came back with zero problems. I’m at a loss

    1. Paige-

      Thank you for asking about your Mitsubishi Eclipse. Based on your description, there is most likely some kind of restriction in the system, causing an issue with the circulation of water/coolant. Depending on how many miles are on the vehicle, it may be time for a water pump replacement, as it is typically recommended every 90,000 miles or so to have this service performed. Another possibility is having an air pocket trapped in the system. You may notice a bubbling or a boiling over if that is the case. Have you attempted bleeding the system? If the vehicle doesn’t have a bleeder valve, you can accomplish this idling the vehicle with the radiator cap off. It usually will take around 15 – 20 minutes. You should eventually notice the coolant stops bubbling up every so often. As it bubbles up the coolant level will drop and you should top it off.

      Thank you!

      -BDP

  9. I have a 2004 Audi A6 Quattro 2.7T that has been leaking coolant as of late. It seems to leak coolant on occasion while parked after driving. It does not leak everytime and the leak seems more serious at times. I’ve had it looked at and a leak was not found at the time. Does this seem like it could be the pump, or possibly the seal?

    1. Barrett-

      Thank you for asking about your Audi A6 Quattro. Based on your description, it seems more likely that a hose connection is loose than something to do with the water pump. If the leak was water pump related, that would have been detected at the time the vehicle was looked at. Are you noticing any other symptoms such as overheating? Have you had to add water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  10. I have a 1995 Ford Ranger, 2.3L engine. It was overheating, I replaced the radiator, thermostat, heat sensor, HCL valve and flushed the heater core. The vehicle no longer overheats, but I cannot get the heat to turn on. When I check the water hoses, the one on top gets a little warm, the one on the bottom stays cold. Also neither of the hoses connected to the heater core are that hot. Is it possible that the water pump is going bad?

    1. Willie,

      Thanks for your question about your 1995 Ford Ranger. It is possible that your water pump is starting to go out and not able to push water through your heater core. If that was the case you would probably have a large temperature difference across your radiator as well. It’s also possible that your heater core is still clogged so it may be worth removing the hoses and pushing water through with a garden hose just to make sure it isn’t still clogged.

      Thanks again for your question!
      -BD Auto Pro

  11. I have a 2005 Jeep Liberty Renegade, in August I noticed a trickle of anti-freeze like fluid running down the side and underneath the engine creating a spot on our garage floor. If the engine has been running & under pressure, no leaks occur. After a day or two of being parked a small drip was taking place. When I operated the A/C there was an intermittent whining sound. Now in November I’m not running the A/C, the heater & defroster work and no leak. I thought the water pump may have leaked fluid through the “weep” hole. So far the radiator and all connections have been checked by a mechanic and given the ok. No overheating. Any thoughts? Thanks.

    1. Mark-

      Thank you for asking about your Jeep Liberty Renegade. Based on your description and the mechanic’s “ok,” it does not sound like your water pump is going bad. Typically, when the water pump starts not functioning properly, you would have an issue with overheating and more than likely, notice antifreeze leaking from the weep hole. Also, the fact that your heater is functioning properly indicates that you are getting proper flow, which means the water pump is circulating and functioning as it should.

      Thank you!

      -BDP

  12. I have a toyota camary 2.4….if i drive this for 3hrs The coolant water goes dry…i had to stop and topup the water again…no rising in temperature.it happen once when the water goes dry and thw car just stoped, i quickly check the temperature and it was at normal stage. I have to wait for the radiator to cool.when i checked the water inside the coolant reservoir and radiator has gone dry off.please what should i do please.

    1. Williams-

      Thank you for asking about your Toyota Camry. Are you noticing any other symptoms, besides the loss of coolant? It seems strange that you are not noticing a rise in temperature, even with the extreme loss of coolant you are experiencing. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  13. I have a 2006 Hyundai Santa Fe -I am losing my coolant somewhere but the engine does not overheat-however when I first start my car in the morning it shakes and has loud popping sounds and is difficult to keep it running but after a few tries it eventually stays on and settles down-i have put an oil and gas treatment in the car and at first the oil treatment-STP seemed to help-anyideas-the hose from the coolant to the water pump has antifreeze on it my Walmart mechanic said but didn’t know where it was coming from.

    It is scheduled to go into the shop but I was just wondering what it could be-the car has had no problems except an oxygen sensor years ago and is now at 181,000 miles only recently it started acting like this-after it is started it goes just fine but I’m worried about what it could be and cost to repair.

    Thank you

    1. Gayle-

      Thank you for asking about your Hyundai Santa Fe. Has the water pump ever been replaced? It is generally recommended that the water pump be replaced every 90,000 miles, depending on the car manufacturer. A failing water pump, or a water pump that has gone bad, would usually result in overheating. Based on your description, it would be best to have a certified ASE mechanic take a look at the vehicle and give you a proper diagnosis.

      Thank you!

      -BDP

  14. I am having a WagonR of model 2005… recently I got serviced it with a mechanic..violent,oil, everything which is compulsory is changed….but after 10 kms my cars engine started overheating and the car get stoped by itself…my question is that before getting serviced my car was ok no heating issue were there..but after it got serviced why this overheating occured..is there any mistake by mechanic while filling coolent….or while doing service…..bcoz now that mechanic is saying me that my cars water pump is damged and asking me to pay more for that….guys pl suggest me what to do.
    L

    1. Rkt-

      Thank you for asking about your Suzuki Wagon R. How many miles are on the vehicle? Typically, depending on the car manufacturer, it is recommended to have the water pump replaced at 90,000 mile intervals. Are you aware of the mechanic bleeding the system after refilling the coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  15. I have a 1994 Jeep Grand Cherokee the problem is my motor is getting hot & shuts down(off) BUT the radiator& coolant temp are COOL to the touch temp gauge is only a quarter of the way up when car dies then it takes 45mins to a Hour before motor is cooled down again gets hot in about 5miles or so

    1. Cheryl-

      Thank you for asking about your Jeep Grand Cherokee. Based on your description, it does sound like the vehicle is shutting down due to a lack of flow. The lack of flow could be caused from a faulty thermostat, perhaps one that is stuck closed. You can check the thermostat by placing it in boiling water and making sure it is opening up at the correct temperature. If you’ve not had the water pump replaced prior, this is also a component that would control circulation, so it would be recommended to do so.

      Thank you!

      -BDP

  16. I have a 2005 dodge Dakota 4.7L. I’ve added a 180 degree thermostat , 2 core radiator , flex a lite fan (3300cfm) and a new water pump. It’s idles great 185-190 degrees but when I get on he highway it heats up to almost 225 degrees. I thought it was a clog in the heater core ; so I disconnected the heater ( I’m in Miami fl; heater not needed) . It still heats up. What can it be? I thought of every option possible but still heats up. Do you think the water pump was a bad one? I’ve run out of things it could be. What you think it may be? Thank You

    1. Cooch-

      Thank you for asking about your Dodge Dakota. Based on your description, there may be some kind of restriction elsewhere in the cooling system. It seems you have just replaced the water pump and thermostat, so that shouldn’t be the issue. A cooling system flush would be recommended at this point. Are you noticing any other symptoms? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

      1. I did a flush before I install everything, everything was good before I changed the fan and radiator. The reason for the change was because I had a 2300 cfm fan and it wasn’t pulling enough to keep cool when the ac was on. So I changed the fan , radiator and low temp thermostat so I won’t have to worry about that problem. At idle it’s a monster but when I get on the highway it heats up. I’ve done all possible except get a heavy duty water pump. So I ordered a water pump from Flowkooler ( suppose to be a more heavy duty water pump ; better then stock ) I’m gonna see if that solves the problem. I’ll update you all. Thank you for the response

  17. The follow up. After the new water pump and another flush. It’s running awesome not going pass 210 degrees on the highway. Idle between 180-190 degrees with the ac on. The water pump was a major step up from the stock one. Thank you guys for all the info

  18. I have a 1994 Dodge Ram Conversion Van in which the Serpentine belt broke due to the tensioner going bad. When a mechanic looked it over, he said that the Serpentine belt had wrapped around the water pump so it needs replaced as well. My question, is it likely that the belt caused damage to the water pump? When my belt broke I was driving and my power steering quit, but I didn’t notice the Van overheating.

    1. Shelly-

      Thank you for asking about your Dodge Ram Conversion Van. Loss of power steering and the engine over heating are common symptoms when the Serpentine Belt is going bad. In fact, a Serpentine Belt that is failing would cause the water pump to not pump the required amount of coolant, which would cause the engine to start running hotter.

      Thank you!

      -BDP

  19. My Subaru outback is getting very hot after we changed the thermostat. It’s still holding fluid in the radiator, and my meter hasn’t said it’s overheating yet. But the car has popped the cap off the reservoir every time I drive. We bleeded it I don’t understand why it’s now acting up. Water pump?

    1. Michelle-

      Thank you for asking about your Subaru Outback. Based on your description, it definitely sounds like the vehicle is building up pressure in the cooling system. Typically, if the water pump was going bad, you would have an issue with over heating. Try flushing the cooling system to get rid of any debris/jellied antifreeze that could potentially be restricting/blocking flow.
      It is also possible that you are getting combustion/exhaust gases pumping back into the cooling system. You can use a “Block Dye Tester” to confirm whether or not that is the case.

      Hope this helps!

      -BDP

  20. I have a 07 cobalt that is over heating. If I ringing the heat it won’t. There’s plenty of anti freeze in the car. Is it my water pump or thermostat

    1. Chuck-

      Thank you for asking about your Chevy Cobalt. The thermostat sticking could be the cause for your overheating issue. You can remove the thermostat and place it in boiling water to make sure it is opening up at the proper temperature. If not, a replacement thermostat would be your best bet.

      Thank you!

      -BDP

  21. My father has a 2005 Nissan Altima, it runs for a while than shuts off and won’t start for several hrs. If really hot outside she won’t start at all until it cools down. Is there anything that you can think of that it might be

    1. Tiffany-

      Thank you for asking about your Father’s Nissan Altima. Is the vehicle overheating at all? Have you noticed a loss of water/coolant? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  22. I have a 1995 S10 4.3 V6 And it is over heating. I’ve replaced the thermostat, the radiator and radiator cap. I am getting to 210 quickly on my gauge. But if I have to idle for any amount of time it starts rising. What could it be? It also starts going back down when I start moving down the road. Please help me. Thanks

    1. Lynn-

      Thank you for asking about your Chevy S10. Based on your description, the overheating issue you are experiencing must be due to bad flow/circulation, as it doesn’t sound like you are losing water/coolant. Being that the thermostat and radiator cap have already been replaced, the next most likely culprit would be the water pump.

      Hope this helps!

      -BDP

  23. I have 130,000 miles on an 02 Ford Ranger with 3.0 engine. It runs cool at lows speed with the A/C on or off, even in stop and go traffic in extremely hot weather. With the A/C on at highway speeds, the truck has no power and overheats when I try to accelerate. With the A/C off at highway speeds, it accelerates much better but temps still slightly rise under hard acceleration. (Usually slightly above mid-range on the gauge but at times it goes three fourths of the way up). I have flushed the system and replaced the thermostat. Does this sound like a bad water pump, a restricted radiator, or something worse?

    1. Billy-

      Thank you for asking about your Ford Ranger. Based on your description, it’s possible that a faulty water pump or a restriction in the radiator could be causing the fluctuation in temperature, although being that you’ve flushed the system, the radiator shouldn’t be restricted. Typically when the water pump starts to go, it will weep and you will start to lose coolant. Also, the vehicle will typically begin overheating at this point. Try removing the thermostat and running the vehicle without it to see if it still rising in temperature. Even a new thermostat can be faulty.

      Hope this helps!

      -BDP

  24. I have a 2008 ford explorer, and the radiator is full, reservoir is full driving down the road everything is good, customer says the every 2 weeks they have top it off with coolant, but with a pressure tester there is no leaks at all no noticeable signs of a leak and it had passed a radiator test for exhaust fumes. could the water pump just be weak, Where could the coolant be going?? Thanks in advanced

    1. Brandon-

      Thank you for asking about your customer’s Ford Explorer. How much coolant are they having to top it off with? If the water pump was starting to go, more than likely the vehicle would begin to show signs of overheating. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  25. Hi guys,

    I was driving my 2016 Chevy impala and while I was parked I got out of the car and noticed fluid on the ground. I smelled it and it was radiator fluid. I was told the I have a “close in” system so I’ve kept the reservoir filled and it hasn’t overheated. However, a mechanic told me that the water pump had a small link and it’ll be around $700 to fix. My question is will blue devil help with my issue and can I continue to drive long as the reservoir is filled with antifreeze? Thanks guys!

    1. Tom-

      Thank you for asking about your Chevy Impala. Unfortunately, we do not manufacture a product intended to stop water pump leaks. Replacing the water pump would be your best option.

      Thank you!

      -BDP

  26. Hello,
    I have a 06 Toyota sienna. It has been overheating only when going slow or stopping often or at idle. I have also had to add antifreeze often. Today it died going up the hill, it wasn’t overheating. Could this be a water pump. The car will not start now, but turns over.

    1. Kathy-

      Thank you for asking about your Toyota Sienna. Typically if the water pump was going bad, you would see somewhat of a weep coming from the water pump and you would have an issue with overheating. Based on your description, it’s possible that you are getting combustion/exhaust gases pumping back into the cooling system. You can use a “Block Dye Tester” to confirm whether or not that is the case.
      BlueDevil Head Gasket Sealer will still work if your vehicle is getting combustion/exhaust gases blowing into the cooling system and creating pressure. To give yourself the best overall chance of BlueDevil working successfully, in addition to the directions, you should remove the spark plug from the cylinder with the leak; this will be the spark plug from the cylinder with the low compression reading. If you are not sure which one that is, you may pull all of the spark plugs and will notice one will have a white-crystal-like substance on it and/or may look dirty; this is the plug you should pull. Leave that plug out for the 50 minute idle in order to relieve the pressure from building up and thus allowing the product to seal properly. Be sure to follow the guidelines for the proper amount to use based on the size of your cooling system.

      Thank you!

      -BDP

  27. Hello,

    I have a 2001 Chevy Cavalier.
    It runs hot, unless, I have the heater on full. Both the fan, and the thermostat have been replaced. Any thoughts on what the issue could be. I did not notice any water leaking from the pump, nor is there a strong smell of antifreeze. Thank You, for Your response and help with this matter.

    1. JR-

      Thank you for asking about your Chevy Cavalier. Running the heater will help draw heat from the engine to help it from overheating. If you are not noticing a loss of water/coolant, it’s possible that there is some kind of restriction in the system that is affecting circulation. If you have not done so already, try flushing the cooling system to get rid of any debris or jellied antifreeze that could be impeding flow.

      Hope this helps!

      -BDP

Leave a Reply

Your email address will not be published. Required fields are marked *