1998 Pontiac Sunfire 2.2L - Cooling system dominoes?

Asked by Sep 24, 2013 at 09:05 PM about the 1998 Pontiac Sunfire 2 Dr SE Coupe

Question type: Maintenance & Repair

1st it started with me overheating the motor and cracking the plastic radiator tank at
the upper hose inlet - after the drive belt broke and I drove 7-8 miles (stopped when I
got near the red line) with no water pumping.  So I replace the drive belt aqnd thee
radiator and start it up runs great for 45 test - guage goes to middle and stays there.  
Later that day i notice i'm nearly red-lining the temp guage. Stop and find
water/coolant has come out of the surge tank. After cooling and refilling the thing goes
right up to high again and there's constant steam/some water coming out the cap. Get
new cap. Still overheating.  I can go with it just below the warning zone for 20 -30
miles and it stays there then sometimes it wants to go on up in the warning zone till I
have to shut it down. Here's the thing -- I don't know if it's the thermostat sticking
cause I get almost no heat coming through the core.  I dont really understand if I have
an air block. The one bleeder valve on the pipe coming from the heater core has the
screw head snapped off flush and I don't see any others. Tried lettin it bubble out
through the surge tank - but no real change.   Help me Gurus

3 Answers

237,915

If you have no heat, your might have a stuck thermostat and or you haven't properly bleed the coolant system. Try this first..".First with engine off and bleeder screw open, fill coolant reservoir until coolant comes out bleeder, close bleeder and continue to fill reservoir to full line. Turn heater control to full hot and start engine. Rev to 2500 rpm until you reach operating temperature and let idle. Recheck and fill reservoir to full line. If you have air in system it will affect the fan from coming on. What controls the fan is the coolant sensor and cooling fan relay.

3 of 3 people found this helpful.
93,095

It is possible that you have air in the system as you don't get any heat from the heater or you could have blown a head gasket and compression gasses are forcing the coolant out, I think you need to run a "block check" on the engine.

2 of 2 people found this helpful.
237,915

http://www.youtube.com/watch?v=XBzvmvYQz9I

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions

Sunfire

Looking for a Used Sunfire in your area?

CarGurus has 310 nationwide Sunfire listings starting at $3,975.

ZIP:

Search Pontiac Sunfire Questions

Pontiac Sunfire Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,680
#2 Joeyadams
Joeyadams
Reputation 1,320
#3 Warren0007
Warren0007
Reputation 1,230
View All

Related Models For Sale

Used Chevrolet Cavalier
1,000 listings
Used Pontiac Grand Am
1,215 listings starting at $1,999
Used Toyota Camry
999 Great Deals out of 90,916 listings starting at $650
Used Pontiac Firebird
12 Great Deals out of 724 listings starting at $3,990
Used Pontiac Grand Prix
30 Great Deals out of 2,871 listings starting at $900
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Ford Focus
539 Great Deals out of 57,171 listings starting at $1,095
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Ford F-150
2,195 Great Deals out of 206,316 listings starting at $1,499

Used Cars For Sale

2005 Pontiac Sunfire For Sale
71 listings starting at $3,975

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.