Question about 1993 Dodge Stealth
Good idea on the fans. Keep it that way till you fix the problem. Won't hurt anything, just may shorten fan life-but a new fan is much less expensive than a new engine.
Watch the temp gauge on your dash. The thermostat should open as it warms up, before the gauge gets up to half-way. You can tell when the thermostat starts to open-the upper radiator hose will start feeling hot, or at least start warming up. You will get a rough idea if the thermostat is working properly. By the time engine is at normal operating temperature, the thermostat should be fully open and the hose will feel quite warm. If the hose is still cool when engine is at operating temp., the thermostat may be opening too late, as in wrong thermostat. Not very likely, but always possible.
How did the shop check the head gaskets? Did they do a compression test? With new pump, new radiator, new hoses...should be good, but still runs hot? Any bubbling in your overflow tank? You may want to consider having a block test done, where they check for exhaust gases in the coolant. That would be a head gasket leak causing hot running condition. Maybe the shop checked the gaskets this way, or maybe they missed something? About the only other thing I could think of would be a coolant circulation problem inside the engine, a restriction or something, that an engine flush might clear up. A shop could do a reverse flush of the engine if there is a circulation problem.
Good luck, and keep us posted on your progress. Does your mechanic have any other suggestions?
Posted on May 22, 2012
find the cooling fan relay. It will be on the drivers side of the engine compartment. You can identify it by the wires in the connector. There will be a grey, dark blue, dark blue with pink, and a light green wire in the connector.
The grey wire should have power all the time. If it does not check the fusible links.
The dark blue wire should have power with the key in the run or start position. If not trace the wire back to the ignition switch to find the fault.
The dark blue with pink wire is grounded by the computer when it sees that the temp has reached about 210-220 degrees. if it never grounds there may be an issue with the temp sensor or the computer
The light green wire should have power any time the dark blue with pink wire is grounded. If it does not and all of the above check out fine than the relay is the problem.
Let me know what you find and I'll be happy to help if there are any questions.
Posted on Sep 01, 2011
SOURCE: 2002 2.7 intrepid running hot
Hi Gil, The problem you are facing with your vehicle could have many different causes. Have you been running the vehicle with coolant/anti freeze at all times? Have you replaced the radiator cap.? These are both stoppers and pressure relieve valves and if it has weakened, may be responsible for the overheating. If you have checked the engine oil level and have noticed that it is changing color to an opaque gre, it is likely that you have a problem with the cylinder head or heads having warped and because of the distortion, a leakage of coolant into the oil galleries or directly into the sump. There may also be a leakage from the radiator hoses or the core plugs fitted into the engine sub assembly and cylinder head(s). Check the operation of the cooling fans and make sure that it or they are engaging at the correct temperature. Make sure that there is no leakage from the heater core inside the vehicle. The easiest and safest way to inspect for leakage is to have the cooling system pressurized. Unless you have the equipment on hand it will mean taking the vehicle to a workshop, where they will be able to test the radiator cap for you. You can carry out a visual inspection in the mean time, and if you see any damage to the gaskets simply replace the cap and test to see if the problem is solved. Regards John
Posted on Nov 27, 2011
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Posted on Jan 02, 2017
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