Intermittent overheating

Asked by Feb 22, 2014 at 07:35 PM about the Ford Crown Victoria

Question type: Maintenance & Repair

I have an 01 P71 crown vic. It runs fine for a few days at a time then decides to overheat.
I have changed water pump, hoses, and thermostat, flushed radiator. Fan runs when I
turn on the A/C.  It runs sometimes at idle, sometimes not.  Changed fan relays as well.  
I am stumped.  Would appreciate help from anyone. Thanks

3 Answers

115,095

When do you notice it getting over heated? While driving at highway speeds or mainly at an idle? Your fans should only come on when ac or defrost is on or when at an idle the engine starts to over heat. When at idle If engine is not to hot and ac or defrost is not on the fan should not be running.

4 of 4 people found this helpful.
70,955

Are you losing coolant? If so, could be a leaking intake manifold gasket. Especially if you don't see any leaks but the coolant level keeps dropping. If you have a pressurized coolant recovery tank, like my '08 Grand Marquis, there's a special filling procedure. If not followed you may have air trapped in the cooling system. Check to make sure all the air deflectors are in place. Especially on the underside of the car. Since this was a police car it may have been bottomed out a few times while roaring down the road in hot pursuit of some bad guys. HTH. - Jim

30

overheating check sencer for fan opperation water out of tail pipes sometimes conservation (normal) always replace theomastate water out of tail pipes crack head,head gasket,intake gasket,cracked block must be loosing water out of radaitor

1 of 1 people found this helpful.

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