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pretty bad
Typical Repair Cost:
Average Mileage:
129,298 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. not sure (2 reports)
  2. hooked my fan cable up to my battery so the fan is always on (1 reports)
  3. replaced plastic coolant connection to the head and head (1 reports)
1998 Pontiac Sunfire cooling system problems

cooling system problem

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1998 Pontiac Sunfire Owner Comments

problem #4

Jul 192006

Sunfire Sedan SE 2.2L

  • Automatic transmission
  • 120,560 miles


The coolant system has been flushed 6 times, and nothing has changed. The car gets so hot I have to keep the Fan on and I have to crank my heat just so my head gasket doesn't blow, and that's not comfortable by any means in the Summer.

- , Bowling Green, OH, USA

problem #3

Oct 162007

(reported on)

Sunfire GT 2.4L

  • Manual transmission
  • 105,633 miles

Coolant leaked out of the plastic connector in the head and the engine overheated, the fan seized, the head warped and everything else let go: rings-lifters----

Not impressed by the concep and who design that stupid engine?

The fan is a b--- to remove and that engine is the worst to dismantle. no wonder the discontinued the model...

- , Chilliwack, BC, Canada

problem #2

May 012007

(reported on)

Sunfire SE 2.2

  • Automatic transmission
  • 120,000 miles

My car always wants to overheat so your always checking the coolant level. I couldn't even drive home(witch is 14 hours) on the Interstate without having problems. So I hooked my fan cable up to my battery so the fan is always on. When you turn your car off though it makes a funny noise like your car just died but its not hurting anything and its worth it in the long run.

- , Billings, MT, USA

problem #1

Apr 152007

(reported on)

Sunfire 2.2

  • Automatic transmission
  • 171,000 miles

The cooling system is just crap. GM thought they had a brilliant idea for a new overflow tank. It doest have a traditional radiator, just a tank. The coolant doesn't last. Must check coolant everyday to keep it full. The fan doesn't work. The thermostat lasts about 3 months. We have replaced the overflow tank/radiator cap. The cost for this problem is ongoing, because we keep having to buy coolant and thermostats. Not sure if problem will ever go away.

- , Star, ID, USA

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