1999 Pontiac Grand Am troubleshoot cooling

1999 PONTIAC GRAND AM
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MAGGOT4LIFE1987
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  • 1 POST
Electrical problem
1999 Pontiac Grand Am Engine Size unknown Front Wheel Drive Automatic 170000 miles
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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.
Feb 15, 2008 at 11:16 AM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
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://images.2carpros.com/forum/automotive_pictures/62217_99FanRelays_1.jpg


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


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


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

Feb 15, 2008 at 11:29 AM
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