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1999 Pontiac Grand Am troubleshoot cooling

Tiny
MAGGOT4LIFE1987
  • MEMBER
  • 1999 PONTIAC GRAND AM
Electrical problem
1999 Pontiac Grand Am Engine Size unknown Front Wheel Drive Automatic 170000 miles

can you help me troubleshoot for diagnostic cooling wire diagram the fuses are good yet the engine still gets hot even in freezing weather with full antifreeze. I need a diagnostic wire diagram for cooling can you help me please.
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Friday, February 15th, 2008 AT 11:16 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Do the fans work? Turn a/c on the fan should start, turn off a/c idle car till normal temps are reached, does fan come on? If the fan works check the thermostat, it's probably stuck closed, when it overheats, how hot is the upper radiator hose? If only cold to warm tstat is stuck!


https://www.2carpros.com/forum/automotive_pictures/62217_99FanRelays_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_99FanRelays1_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_99FanRelaysWD1_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_99FanRelaysWD2_1.jpg

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Friday, February 15th, 2008 AT 11:29 AM

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