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It overheats in a matter of minutes

Tiny
LGIBS45
  • MEMBER
  • 1993 PONTIAC GRAND AM
  • 100,000 MILES
I want an idea of what to look at and work on before I start tearing it apart. I've already changed the coolant and there was no difference.
Monday, May 7th, 2012 AT 12:10 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Make sure the thermostat is working, make sure the radiator isn't plugged, make sure you don't have a headgasket issue
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Monday, May 7th, 2012 AT 12:18 AM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
First verify that the car is running hot and not just holding pressure. Make shore the seal on the cap is good. If it is overheating that fast the water pump may not be moving coolant. Things like the pump impelled may have rusted of or may be spinning on the shaft. It you remove the thermostat see if there is flow in the system when you reve the engine.
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Monday, May 7th, 2012 AT 12:31 AM

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