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1999 Pontiac Grand Am

Tiny
MOODSWINGS34
  • MEMBER
  • 1999 PONTIAC GRAND AM
Engine Cooling problem
1999 Pontiac Grand Am 6 cyl

my car is a nightmare!Engine runs about 210-then 280 and reservoir not holding fluids. Replaced thermostat, relay switches, and reservoir cap already about a week ago. Oil appears normal, put stop leak in it about a month ago. Think I may have damaged it further, passes pressure test, when heat runs temp. Is ok but heat comes and gos. Do not see any visible leaks but it takes a gallon of water to get 5 miles to work and I have to pull over frequently. Do you think a coolant flush would help?Maybe water pump?
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Thursday, December 10th, 2009 AT 7:04 AM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Start with a compression test to rule out headgasket problem.
If OK, then perform a cooling system pressure test.

Could be a waterpump or many things, try the above first and post results.
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Thursday, December 10th, 2009 AT 9:03 AM

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