Heater core hookup, technical - heater core hookup

Heater Hose Hook Ups

The BlueDevil Head Gasket Sealer, the appropriate product for heater core leaks, reacts with heat to form a chemical weld. Since it is only a small leak in the heater core, we recommend simply sealing that leak and leaving your heater core in place. These vehicles are incredibly difficult when it comes to changing the heater core, it requires removing the entire dash, and is an hour process. However, are there upgraded versions of these connectors?

Heater hookup on early CJ5

Technical - Heater core hookup

Heater core hookup

Matti- Thank you for asking about your Volkswagen Passat and Jetta. Jinger- Thank you for asking about your Jeep Grand Cherokee. My question is, based on this information do you think Blue Devil will work and which product would I use?

Sonia- Thank you for asking about your Mitsubishi Montero. Sonnyboy- Thank you for asking about your Chevy Silverado. Thank you for asking about your Ford Expedition. Others also came to that conclusion. If so, would save me a ton of time!

As I previously stated it is a small leak now. Sandra- Please give our tech support team a call at so that we can get a full understanding of just how bad the leak is that you are experiencing. Thank you for your question. Would you wait until it became a bigger issue?

Thank you for asking about your Mitsubishi Galant. If so what product to use. Karen- Thank you for asking about your Jeep Grand Cherokee. Can I replace a leaking heater core? Hans- Thank you for asking about your Dodge Ram.

Will your blue devil product work on this problem? Cantona- Thank you for asking about your Jeep Grand Cherokee. The engine doesnt overheat and the windows dont fog. Fixing a leaking heater core will always be much easier than replacing one.

How to Bypass a Heater Core

Another consideration is a restriction on the inlet side. Thank you for asking about your Chevy Camaro. This you don't need to be so condescending.

We noticed after a rain that the windows were all fogged up and when we checked, watch discovered the driver side floor was soaking wet. There is also a weird smell in the car. Ross- Thank you for asking about your Mercedes.

  • The product is formulated to work with the antifreeze already in your system, so your only real direction is to make sure you have enough room to add the product.
  • Thank you for asking about your Dodge Durango.
  • Feel free to contact our technical support line at if you run into any questions.
  • Have you determined the function of the switch with your multimeter?
  • Thank you for asking about your Chrysler Pacifica.

Which is apparent cause the coolant on the floor board. Are you able to determine just how quickly you are losing antifreeze at this point? Engine coolant usually smells sweet and does have small amounts of lubricants in it so it could be the oily feel you have. It goes away after engine is warm. Thank you for asking about your Dodge Stratus.

The article is informative and not imposing. Once it had been added reconnect the hose and start the idle from that point. The heat still works but it does fog the windows slightly too.

Jefferson operates Red Dirt Rodz, his personal garage studio, where all of his magazine articles and tech videos are produced. The poor n go head gasket sealer or the poor N go radiator and block sealer. With the use of either product, be sure to follow the guidelines for the proper amount to use. How many wires are there, three? Inlet and outlet, and orientation definitely matters on an evap and condenser coils, but on a heater coil not so much.

The heater core needs to be right next to the fan that pushes the air through your ventilation system. However the ones I did find also showed the newer controls that included vacuum. When I turn on the heater it blows like a lil smoke or whatever it is. For deeper radiator cleaning, drive your vehicle for hours at normal driving conditions or intermittently over a period of a few days, if weather permits.


There is sweet sticky stuff on the passenger floor, i cleaned the floor and it came right back. Would the bluedevil fix my problem? The heat works fine, sites no odor or condensation on windshield.

What can I do to safely drive it until I can get it home. The van has been sitting for several months since we got another vehicle. Also, the windows all fog up, especially the windshield.

Will this product seal a potential leak that could be starting? Close drain and install required amount of antifreeze. Based on your description, it does not appear that either of your vehicles are experiencing leaks.

Heater Core Leaking How To Fix a Leaking Heater Core - BlueDevil Products

Once BlueDevil has been added, reconnect the hose and start the idle from that point. Dustin- You would want to add the BlueDevil Pour-N-Go Head Gasket Sealer to a filled system just enough room for the recommended amount of the product and a cold engine. One of the hoses has a plastic Y on it, one hose goes to the heater core, one comes from the radiator overflow canister, and the other side goes to the water pump.

Heater Hose Hook Ups

How Can I Fix a Leaking Heater Core

  1. Herve- Thank you for asking about your Pontiac Torrent.
  2. No leakage on to carpet or damp feel.
  3. No, create an account now.
  4. Just doing further research, I think it might be an aluminum tube.
  5. Does this mean, I have leaking heater?
  6. The air and heat worked before we quit driving it all the time.

It Still Runs

Heater core hookup

It is not a bad idea to preemptively attack this problem and replace them before one breaks and leaves you stranded. They moved a clamp back on the tubes to try to help with the leak. Any jellied antifreeze or other debris that is stuck on the grill or hoses could potentially restrict flow and prohibit the product from working properly. The air conditioner no longer works but it does blow hot air.

The heater core was replaced new last year. When these plastic connectors break, you are guaranteed for a fun time. This might prevent a replacement heater core job? It apparently does make a difference on some heaters. Based on your description, it does sound like you are experiencing a heater core leak.

Heater hookup on early CJ5

Leave a Reply Cancel reply Your email address will not be published. Thank you so much for your time and help! Is there a specific product you would recommend? Are you smelling a sweet smell, like antifreeze coming out of the vents? This should stop the leak and should be fairly easy to access and replace.

How to Bypass a Heater Core

You may use either of the Head Gasket Sealers that we manufacture. Does that sound like a heater core leak? Top off cooling system with water while motor is running. We would not recommend using the product in this case, chicago as the product should not be used for leaking hoses or faulty hose connections. Please contact our technical support line at so that we can get a better understanding of the vehicles conditions and be able to make any appropriate recommendations.

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