Replacing a leaking heater core can be an extremely annoying project due to its location in your vehicle. This thin metal can develop cracks over time and the joints in your heater core can start to come loose due to vibrations in your vehicle and bumps in the road. Likely someone would have given you a scan by now, if it's in there.
Heater Core Leaking How To Fix a Leaking Heater Core - BlueDevil Products
Thank you for your question. Kat- Thank you for asking about your Chrysler Sebring. Jean Marc- Thank you for asking about your Jeep Cherokee.
Johnny- Thank you for asking about your Toyota Sienna. Some heater cores have a restriction in one fitting. Close drain and install required amount of antifreeze. Don't know what your set up looks like. Sometimes when I put the heat on I smell the sweet antifreeze other times I do not.
Based on your description, you would be a good candidate for the product. Garrison- Thank you for asking about your Honda Civic. No leakage on to carpet or damp feel.
- Which one is going to work for me, the yellow label or the pour and go?
- Why one produced over the other?
- The other one under the hood i didn't photograph.
- Kim- Thank you for asking about your Jeep Cherokee.
- What do you recommend besides replacing the engine.
- Do you think either of these products will work for me?
Heater hookup on early CJ5
This is what is on my Dispatcher. The reason the flush is recommended is to ensure the system is clean. Then a few weeks ago, I heard something go hssss and then clunk as we were driving. Paul- Thank you for asking about your Yukon. Yes, you can bypass the heater core to prevent the leaking you have seen recently.
We noticed after a rain that the windows were all fogged up and when we checked, discovered the driver side floor was soaking wet. Usually the coolant goes through the core constantly, dating funny and the air doors determine whether you get heat or not. Jaws- Thank you for asking about your Saturn Vue. 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.
Sharon- Thank you for asking about your Dodge Stratus. Are you saying you have a leak in the radiator as well as the heater core? Adele- Thank you for asking about your Dodge Journey. There is also a weird smell in the car.
Then the connector simply slides off the pipe. Engine coolant usually smells sweet and does have small amounts of lubricants in it so it could be the oily feel you have. Carolyn- Feel free to contact our technical support line at with any questions.
How quickly are you losing antifreeze? So I was trying to find a diagram that might show it. Sean- Thank you for asking about your Dodge Ram. Could this be possibly the start of a head gasket leak?
Is it blowing hot air when you put the heat on? My car never goes beyond the mid mark on temperature gauge, for rules and am just confused on what to make of it. What are the symptoms of a leaking heater core? Feel free to contact our tech support team at with any questions.
It Still Runs
It apparently does make a difference on some heaters. Some heaters have the water valve in the housing, with the core, and it might matter which hose connects to the valve, and which to the other side of the core. Once I was able to find the manual, it only showed the newer one too. On most new vehicles, the heater core is inside the cabin of the vehicle.
- Will your product help prevent an expensive repair?
- Larry- Thank you for asking about your Jeep Wrangler.
- Ryan- Thank you for asking about your Dodge Durango.
Thank you for asking about your Jeep Liberty. Now I dont see any visual spots when I move my car, but my driving window does fog up, and there is a slight dampness in my passager side floor. The poor n go head gasket sealer or the poor N go radiator and block sealer. When I turn on heater it smells like antifreeze. If you have a leaking heater core, online dating sites costa rica then you may have experienced some of these symptoms and have realized how frustrating it can be.
How Can I Fix a Leaking Heater Core
Inspecting and replacing any hoses necessary would be your best option. Does it go in before the antifreeze? Another problem with coolant leaking into the cabin of your vehicle is that once it is warmed up, that coolant will be almost degrees! As per the directions, you will be removing the thermostat and flushing the cooling system prior to use.
How to Bypass a Heater Core
Leave a Reply Cancel reply Your email address will not be published. Once it had been added reconnect the hose and start the idle from that point. Randy- Thank you for asking about your Dodge Journey. Will your blue devil product work on this problem?
But the real trick is getting the connector off the pipe. 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. But I don't know that for sure. When these plastic connectors break, you are guaranteed for a fun time. But the driver did not hear it.
It is not a bad idea to preemptively attack this problem and replace them before one breaks and leaves you stranded. Is itworth a try to use a Blue Devil product to help the problem? But if it's just a normal heater setup, whichever hose routes to whichever fitting cleanest, is what I do.
Even if you have an older vehicle with the heater core outside the cabin, leaking fluid can still find its way into the cabin through the ventilation ducts. Having a leaking heater core can be one of the most frustrating leaks you can have in your vehicle. The BlueDevil Head Gasket Sealer, the appropriate product for heater core leaks, reacts with heat to form a chemical weld. The air conditioner no longer works but it does blow hot air. Donna- Thank you for asking about your Jeep Liberty.
How to Bypass a Heater Core
Think of it as a small radiator. Typically this is a very simple circuit. Does this mean, I have leaking heater?