MY 1999 Pontiac Sunfire is overheating. I changed the thermostat and put coolant in it.The engine gets hot but the radiator stays cold.

10

Asked by May 24, 2012 at 04:45 PM about the 1999 Pontiac Sunfire 4 Dr SE Sedan

Question type: Maintenance & Repair

6 Answers

1,635

u should have used a radiator flush before pouring the coolant your water jackets must be choked with rust they r small hole which r blocked up by rust or corrosion

1 out of 1 people think this is helpful.
10

Could it also be the water pump is not working

1 out of 1 people think this is helpful.
1,635

if u used water as coolant more then proper coolant it could be the water pump as well

1,635

and check for mud or dust also , it should be seen after removing the radiator cap floating above the water surface if your water is brown coloured its rust on water pump and in the lines

1,635

also check your sparkplugs and ignition timing if distributor is present

2,905

is thermostat in backwards? if corrosion is apparent, replace all hoses, radiator could be clogged, and replace water pump , sounds like everything needs to be replaced, cheaper to do it all at once instead of one thing at a time replace radiator as well

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Sunfire

Looking for a Used Sunfire in your area?

CarGurus has 314 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
1,007 listings
Used Pontiac Grand Am
1,222 listings starting at $1,999
Used Pontiac Firebird
10 Great Deals out of 732 listings starting at $3,875
Used Pontiac Grand Prix
29 Great Deals out of 2,867 listings starting at $1,500
Used Ford Mustang
463 Great Deals out of 45,658 listings starting at $1,999
Used Ford Focus
555 Great Deals out of 57,033 listings starting at $1,095
Used Toyota Camry
1,019 Great Deals out of 90,645 listings starting at $650
Used Chevrolet Impala
585 Great Deals out of 31,587 listings starting at $799
Used Ford F-150
2,179 Great Deals out of 206,252 listings starting at $1,499
Used Chevrolet Camaro
215 Great Deals out of 30,767 listings starting at $1,217

Used Cars For Sale

2005 Pontiac Sunfire For Sale
72 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.