1995 trooper - passanger carpet is damp and i believe its the heater core leaking. i havent pulled the carpet back but the upper area of the carpet around the transmission area and directly beneath the dash doesent appear to be wet, but the faint smell of antifreeze leads me to believe that it is the core leaking. how much of a pain is it to change this part and what should it cost. what appeares to be the heater hoses in the engine bay seem to go toward the back center of the firewall and cannot see the core stubs coming out of the firewall. it just looks like the core is more under the cnter of the dash rather than to the side like most cars....
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Re: heater core leak ??
Yes it is a heater core leak, here is how to change it.
Remove battery cables. you have to remove the upper dash pad on this paticular year model. with a 10 mm socket and a 1/2 inch extension remove the 5 retaining bolts. remove the blower assembly under the passenger side of dash. remove passenger side seat and center counsole. drain radiator. disconnect hoses from now exposed heater core. turn it 180 degrees and slide out. Replace in reverse order.
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Scott, do you see external leaks on the ground? Where? if so, that's not a leaky core, but something else,
When you turn on your defrosters the anti freeze may vaporize and cause a film to form on the inside of the windshield. Take a cloth and wipe the inside of the windshield to see if it smudges. If it does, it IS leaky core inside the box. If not, it still could be a leaky core, but it is not enough to get blown around yet. The heater core box is acting like a bucket. Pull the carpet back by the passenger's feet at the firewall. look to see if it is soaked under the carpet. Pull back the Driver's carpet. Antifreeze travels. Do you see external leaks on the ground? Where? if so, that's not a leaky core, but something else, Lastly, does it smell like antifreeze inside the car? Check all this out and let us know your outcome, Scott. (A heater core in a modern care is not for the faint of heart or limited skill levels.)
if it looks like coolant, and your carpet on the passenger side is damp then yes your heater core is leaking, the best solution for repair is go to parts store near you, pick up a manual for your car, most parts stores carry them, as well as the parts you need for the repair
Losing coolant can be attributed to a few things. Can be a leaking water pump. Does the area below the water pump look damp? May be a seal failure. Could be a leaking hose. Do you have any wet spots under the car after you are parked? May be a leaking heater core. In the passanger side footwell carpet damp? Do you smell a sweet odor? Or could be a head or manifold gasket. Check your oil. Is it cloudy or do you see water drops on the dipstick? Is the engine running rough? Do you have an excess amount of "steam" coming from your tail pipe? Those are the first areas to look. Let me know and we can continue to diagnose from there.
There are two causes of fluid dripping from the heater core/ac evaporator housing. First, if it is running inside the vehicle and getting the carpet wet as described then it is most likely a bad heater core leaking antifreeze into the cab. Secondly, if it is dripping outside only when the a/c or defroster is running then it is the normal expulsion of condensation and is harmless.
you dont supply enough info. if it is excess humidity you are probably trying to drive with the heater on reciculate.the humidity is from your breathing this is only to be used when the AC is needed in its coldest funtion. if it is an oily kind of moisture or a sweet tasting liquid in the carpeting toward the heater it is probably from a leaking heater core. if its just water in the carpeting have someone spray water on the winshield and door areas until you locate the source of the leak.
very possible heater core could have a very slight leak in the containment box which hold it and evaporator for ac. you should check the floor on passenger side at the top of the carpet pull it back and look for dampness.
You have a bad heater hose and it's being pulled in the cab, if your ucky. Otherwise you will have to pull out the heater core and replace it. A new one runs about $75.00 and can be bought at any auto parts store if you wan to try this on your own post here and I will give you the proceedure.
disconnect the battery, pull the carpet back on the passanger side floor, unplug the ecm and spray out with brake cleaner let dry and it should fire up and run, but you need to do something about the heater core leaking or its not gonna do much good
I would say that your heater core or one of the heater core hoses has started to leak. Check the hose clamps to make sure that they are tight. Fill the coolant system and run the car. Check to see where the leak is, you may need to put the car on ramps so that you can see the leak better.