Question about 1998 Audi A4

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Coolant and engine temp both running much hotter than normal. almost overheating but not quite. hotter they get the less cold my A/C becomes

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Mine was doin the same thing when i got it. We fixed the " fan clutch " which apparently sits in front of the radiator and helps cool the AC(according to mechanic). When this got fixed the AC ran cooler and car started running cooler. Like yours, mine was overheating, but running hotter than it should.

Posted on Jul 27, 2009

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Posted on Jan 02, 2017

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My 2010 dodge journey is running hot and the heater is blowing cold air. Temp goes back down to normal while driving. No indicator lights r on. Is it the thermostat or heater core?


Most likely neither is the problem, to verify the heater core is ok go under the hood and touch the heater core coolant supply hoses (hot engine) one will be really hot and one a little cooler, if this is the case the heater core is ok and you have another problem, that other problem is most likely a failed part or parts called the air temperature control blend door motor or door is defective. Also I doubt the engine is overheating, it gets hotter while sitting in traffic because the electric fan that cools the engine only comes on at about 225 degrees Fahrenheit. If you had an overheat condition the check engine light would also come on to alert you of the overheating condition.

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My 1994 toyota camry is ovverheating even when the water pump is new and the radiator are goo, no leak the hoses are good The car is still overheated


If this happens very quickly, it is probable you have a head gasket leak to the coolant jacket. There is a simple test a mechanic can do for combustion gases in the coolant.

If the car warms up normally, then keeps getting hotter, the temp sender may be faulty, causing the radiator fans not to run when they should start. Check they do run when the engine is getting hotter.

Or, the thermostat could have failed closed, not allowing the coolant to circulate.

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I have a 95 Gran AM GT with 3.1 auto. The motor will run until it gets overheated and boils over, but the fan will not start.I have totally flushed the system,pulled and inspected the water pump, changed...


Fan operates when coolant temp reaches 226 deg.F and shuts off at 219eg.F
fan is controlled by the PCM infuts from Eng. coolent temp. sensor & Intake air temp. sensor
the yellow wire is the 5V reference and the black wire the is the PCM ground sensor
make sure your not using teflon tape on the threads of the temp sensor.
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Car blew off coolant with no overheating;no other obvious problem


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1 Answer

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Normal coolant temp for 2003 Jeep Grand Cherokee city/highway V6


Your Jeep should have a 192 or 195 degree thermostat. Do u have to add coolant once in a while? If there is no coolant loss, no overheating problem, u shouldn't have to worry about it, it could be the temp. sending unit is not accurate. If it concerns u it would probably be worth it to remove the thermostat, check the temp rating on it(it should be stamped on it). Replace w/ a new one, and see what it indicates for temp then. Good luck, let me know what u find Curt

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