Running very hot - on the N after short driving distance - replaced water pump, thermostat, radiator, and new after market fan (not quite as curved as orginal) Please help have no idea what it is- I was told by a mechanic that there may be something wrong with the fan clutch, but that shouldnt cause the overheating.) Please help!
If something is wrong with the heater cord would it effect the cooling system?
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Re: 1990 Ford Mustang GT Still Running Hot!
Check to see if you can spin the fanwhile the engine is cool it should spin freely,if it doesnt fan clutch,also I would switch the fan back to oringinal just to test if this is the problem,if it is youll have to design a different fan shroud if you want to use you new fan,if everything done above is ok with the engine cool take off the radiator cap and squeeze the bottom hose 4-5 times in burst this will make sure you dont have air in the system,if this is helpfull please vote me a fix ya
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Does it get hot mainly when parked or stopped at a red light or does it get hot even when the car is in motion?If its only when your stopped,the cooling fans are probably not working due to a blown fuse,relay or bad fan motor.If the coolant inside the reservoir seems to boil once the engine gets hot,that can be caused by a defective radiator cap.A blown head gasket will also cause overheating.If you let the engine idle for a few minutes,shut it off,pull all of the spark plugs,see if any plug or two adjacent plugs are wet with coolant, that's a sign of a blown head gasket.If you constantly need to refill the radiator with coolant, that's another sign.
COULD BE THERMOSTAT IF TOP RADIATOR HOSE IS NOT HOT AND BOTTOM RADIATOR HOSE GOING TO WATER PUMP IS HOT THE THERMOSTAT STICKING PARTIALLY CLOSE.IF TOP HOSE IS HOT THE RADIATOR,ENGINE BLOCK HEATER CORE NEED FLUSHING OUT.IF WATER PUMP WEEP HOLE LEAKING REPLACE WATER PUMP, FAULTY WATER PUMP WILL CAUSE ENGINE TO OVER HEAT.REPLACE RADIATOR CAP MAKE SURE YOU HAVE 50 / 50 MIX SOLUTION ANTIFREEZE AND WATER IN COOLANT SYSTEM. IF ALL LOOKS GOOD CHECK ENGINE OIL ON DIP STICK, IF OIL IN DIP STICK LOOK LIKE MILKSHAKE YOU HAVE BLOWED HEAD GASKET THAT WILL CAUSE ENGINE OVERHEATING WHILE DRIVING CAR IN SHORT DISTANCE AND ENGINE OVERHEATING.
seems to me that you could have an air lock, try loosening the rad cap slightly and run car until fans kicks in, squeeze upper rad hose a few times to push any air out. Careful with hot hoses. see if this helps.
Take it to your local Auto Zone and get the codes read. They can print you a copy of what to check for. IF the fluid is not flowing at all then your water pump is not working, be it due to belt or bearing in the pump. Have you changed the thermostat? Does the car actually run hot or does the light/gauge just read hot?
Are you sure its not an engine overheating issue Maybe have a faulty eng temp sensor.Sounds like engine is tightening up Considering what youve replaced ICan you check power supply to starter when its tight?
does the fan come on when supposed to? you could hook your fans to a toggle switch and run them manually from start to finish this may help. also did you bleed the system after replacing these parts and purge all air from cooling system? is the coolant coming out of the resovoir hose?