ENGINE COOLING PROBLEM1999 PONTIAC SUNFIRE ...

1999 Pontiac Sunfire

Tiny

CARLENEM

April, 21, 2009 AT 7:35 PM

Engine Cooling problem
1999 Pontiac Sunfire

why does the fan only work when the air conditioner is on? If you turn off ac it overheats

FOUND 13549 RELATED QUESTIONS

3 Answers

Tiny

bluelightnin6

April, 21, 2009 AT 9:20 PM

First ensure coolant is at proper level in radiator. If OK, inspect cooling fan relay (located in underhood fuse/relay center). Let me know results and I will follow up.

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Tiny

CARLENEM

April, 21, 2009 AT 11:09 PM

II don't know how to check the relay to see if its good or not? The electic fan does come on, and the temp stays normal as long as you have the air conditioner on. As soon as you turn off the ac the fan doesn't come on any more. So, now what? Any kind of help would be appreciated.

Tiny

bluelightnin6

April, 21, 2009 AT 11:16 PM

Follow the link below to learn how to check a relay..

http://www.2carpros.com/how_to/how_do_i_check_a_relay.htm

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