Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

1992 Cherokee runninig hot again


Ole Lemmer's Avatar
Visiting Guest

Posts: n/a

10-11-02, 10:49 AM   #1  
Ole Lemmer
1992 Cherokee runninig hot again

I posted a couple of months ago about an overheating problem. After input from readers, I decided to replace the radiator. Car ran fine and did not overheat, even with air conditioning on. Car began running hot again while idling in traffic so I turned on the heater to help alleviate the problem until I got home. Heater intermittantly blew out cold air while idling and hot air while in motion. Once home, I checked the coolant level which was low. Upon refilling, there was some leakage onto the driveway and I have been refilling every couple of days. Does this sound like a problem with the heater core? Would leakage be associated with this or could it be the water pump? Not sure where the heater core is located so I can't pinpoint the source for this posting. Also, if it is the heater core, how involved, in terms of both time and money is this project in terms of a do-it-yourselfer? Any feedback is greatly appreciated.

 
Sponsored Links
Joe_F's Avatar
Visiting Guest

Posts: n/a

10-11-02, 11:21 AM   #2  
Joe_F
A leaky heater core will generally show itself with coolant puddles on the floor inside the vehicle.

Check all your heater hoses and radiator hoses closely. You did change them when you did the radiator, right? . How about the water pump? Is it original?

 
Ole Lemmer's Avatar
Visiting Guest

Posts: n/a

10-11-02, 11:24 AM   #3  
Ole Lemmer
92 cherokee

I think it might be the water pump given the location of the leak, however, would this cause cool air to come out of the heating system?

 
Joe_F's Avatar
Visiting Guest

Posts: n/a

10-11-02, 12:38 PM   #4  
Joe_F
Sure.

No coolant circulation=no heat.

 
davidf's Avatar
Visiting Guest

Posts: n/a

10-11-02, 01:46 PM   #5  
davidf
god heat = good engine

If your engine isn't running normally could cause the heater to blow less heat.I know this for a fact because a car specialist said this on a radio car show recently where I live.Make sure the engine is running normally.The engineers designed the engine to reach a certain temperature under normal engine operation and a defective engine can run cooler than normal despite what most people think.Most people think that a defective engine will cause the engine temperature to rise but in many cases it is the reverse.

 
davidf's Avatar
Visiting Guest

Posts: n/a

10-11-02, 03:44 PM   #6  
davidf
heat

I received a Festiva once with a lot of engine problems such as several hoses disconnected from the back of the carb. and vacuum leaks ect.I cleared up 90 percent of the trouble but the car still didn't run right and the heater blew cool air at heat settings set to max.I checked the cooling system thoughly and found nothing wrong with it so in frustration I drove the car around for a few more months with the engine problems not realizing the cooling problem was due to a bad running engine until I heard the car repair show on the radio in which the female specialist from a company that solves car garages problems that the mechanics can't fix,say that a bad running engine can generate less heat than normal and hence no heat or little heat from the heater.
So,in response to the original post about a heater problem,you know if your engine is running ok.Is your engine running good or wre there problems with it????

 
Search this Thread