Noticed coolant leaking when vehicle parked, checked hoses, water pump, and radiator and find no signs of leaks and doesn't leak when running. Now heater does not produce any heat and lines do not get hot when running - temperatory higher than thermostat (186 degree thermostat and running at 210).
Please get a Coolant pressure test done which will expose the real leak.
I’m happy to assist further over the phone at https://www.6ya.com/expert/uttamjeet_2f3adc18600f8ede
SOURCE: 1998 Dodge Durango no heat when using heater.
BLEND DOOR STUCK OR BROKEN. NEEDS TO REMOVE DASH AND HEATER/EVAP CORE BOS TO REPAIR REPLACE.
SOURCE: leaking coolant from around water pump just put in
If it's the weap hole the pump is going bad. That hole is designed to leak as a "warning" that the pump is going to fail.
SOURCE: I have a 1990 gmc 1500 5 speed that is overheating
It sounds like you have covered the basics. I will provide a list of some of the more major things. I would recommend having the coolant system pressure tested, as well as a compression test on the cylinders. At this point, it could be one of the following. 1: The bypass hose (This connects from the intake to the water pump) 2: Leaking freeze plug or plugs 3: Leaking intake manifold gasket or cracked intake 4: Bad head gasket or cracked head 5: Cracked block Having the coolant system pressure tested should expose any external leaks. Having the cylinders compression tested may tell of any internal problems.
SOURCE: 99 yukon overheating. I have done all the obivous
check your fan clutch. chances are its worn out not allowing for sufficient air to be pulled through the core of the radiator.
SOURCE: Loosing small amount of coolant
Check your manifold(upper plenum) area. A leak in the gaskets is common in GM cars.
heater fittings where leaking bad in my 2000 impala and now I have to replace those gaskets.
The best recommendation I can give you if you wanna save money is get a Tech like myself not working for a company who rewards them for selling parts, and they should be able to find the direct leak(s) and not just guess.
I would start with a simple coolant leak detecting dye Kit.
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