1995 Pontiac Grand Am OVERHEATING

CHEVY5

MEMBER
1995 PONTIAC GRAND AM
6 CYL
2WD
AUTOMATIC
220,000 MILES

Heater fan doesn't come on, already changed the relay. Where is the temp. Switch?Is it the one front just underthe themostate housing.
Is the a temporary bypass that can be done so I can get back and forth to work. Any info would be nice, thanking you in advance.
Rod Earl

3 Replies

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Heater fan would not affect engine overheatin, i'm assuming you mean the radiator cooling fan.

If so then check the engine coolant temp. Sensor which is located on the upper right rear of the engine, near the exhaust manifold.

Do you have A/C? If so, try turning it on and see if the fan comes on then. If it doesn't then most likely the fan motor itself is shot. If it does then most likely is the sensor.

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Friday, May 21st, 2010 AT 8:29 PM

CHEVY5

MEMBER
2 POSTS

THANKS BLUELIGHTNING,
yes is rad fan don't know why I put heater, anyways
fan is good did try this. When you say right side that
would be the windsheild side? Have already changed the relay, just want to be sure my next move is the right one, up here in Canada our parts are a more costly than the States. There is two sensors to the block, one on right side, single wire other on left side
two wires, like to try to solve this today, any help is great. Thanks again Rod Earl

P.S. Fan doesn't come on with A/C either.

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Saturday, May 22nd, 2010 AT 9:48 AM

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

If fan doesn't come on with A/C then sensors are not at fault. Need to test the fan motor with a direct power source. Connecto 12v power wire and ground from battery to fan motor, if it doesn't come on this way then replace fan.

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Saturday, May 22nd, 2010 AT 12:31 PM