Overheating 1999 Pontiac Sunfire

Asked by Nov 17, 2012 at 08:47 PM about the 1999 Pontiac Sunfire

Question type: Maintenance & Repair

I have an overheating problem with my 1999 Pontiac Sunfire with a 2200 engine.  I have changed the water pump, radiator cap and thermostat. My oil looks good and there is no coolant burn off smell when the car is   running.  Any ideas on what could be causing this issue.

9 Answers

89,695

Only things I can think of is 1. bleed the air out of the system if there is a coolant bleeder. 2. coolant system flush 3. that cooling system additive that makes it work better - Water Wetter is the name. Good luck

7 out of 7 people think this is helpful.
30,955

When does it over heat? When it's sitting still or while its driving or both.

7 out of 7 people think this is helpful.
1,370

Take off the coolant cap smell inside, does it have an exhaust smell

7 out of 7 people think this is helpful.
1,370

May be cooling fan, if its not turning on, can u run it down the highway and its ok but as soon as u stop at a stop light it will heat up. If that happens ur fan is not operating

4 out of 4 people think this is helpful.
30,955

And if it runs fine while sitting still and overheats while driving then you ran something over and it broke the front air dam.

3 out of 3 people think this is helpful.
120

how do you check transmission fluid in a 1999 pontiac sunfire

12 out of 12 people think this is helpful.
30,955

@mrjkg http://www.cargurus.com/ Cars/Discussion-t2254_ds476437 ......delete the spaces

1 out of 1 people think this is helpful.
2,695

how much scale and corrosion is in the radiator? maybe a good radiator cleaning or replacement is in order......

2 out of 2 people think this is helpful.
110

how to I check if power is going to fan, is there a fuse associated with power to fan

11 out of 11 people think this is helpful.

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