I purchased a 94 Grand Cherokee w/ the 4.0L engine. If the vehicle is started in the morning (sitting all night) almost instantly there is a lot of heat under the hood. It will then run about 200 degrees. I flushed the coolant system. Didn't see anything abnormal but still no help. I removed the thermostat, now it runs about 180. It had an bad muffler so I thought maybe a backed up convertor was casuing the heat. I took it in and had everything new installed from the tail pipe to the exhaust manifold. Thought it might be a water pump or radiator, but the engine compartment will get too hot to touch within a couple minutes. Seems like either a water pump or radiator would take longer. Not to mention it still does not have a stat installed. Could it be an exhaust mainfold? The one on the Jeep looks good, can't see any holes and don't smell exhaust? First jeep I've ever owned, not sure if there is something typical or expected for this model.
have the same problem?
Wednesday, September 5th, 2007 AT 4:40 PM