i have a 1998 Pontiac grand am 4cyl. 2.4 l ohc engine and when I turn on the heat the temperature gauge gauge goes almost to the dangerous level.when I turn it off it goes back to normal.what would cause this and how can I fix it?

Asked by Jan 16, 2014 at 09:17 AM about the 1998 Pontiac Grand Am

Question type: Maintenance & Repair

my 1998 Pontiac grand am 4cyl. 2.4 l ohc engine is oveheating when the heat is turned on .the tempature gauge goes almost to the top with the heat on then returns to normal after I turn the heat off.what could be causing this and how can I fix it? also, where is the thermostat located and how do I change it?

1 Answer

4,655

Most often this problem is caused by low coolant level, or air in the system. Have the coolant system flushed and refilled, warm the engine for a few minutes and recheck the coolant level. Make sure to purge any trapped air by squeezing the radiator hoses, you should feel "solid" water, no air. Your T-stat is in the housing under the water pump, near the firewall. You will have to remove the exhaust manifold in order to get to it.

Your Answer

Add photo

Related Questions

Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
tenspeed
Reputation 7,730
#2 John Saffrahn
John Saffrahn
Reputation 1,600
#3 Tom Demyan
Tom Demyan
Reputation 1,470
View All

Related Models For Sale

Used Pontiac Grand Prix
32 Great Deals out of 2,806 listings starting at $1,995
Used Pontiac Firebird
14 Great Deals out of 752 listings starting at $2,995
Used Ford Mustang
679 Great Deals out of 44,705 listings starting at $1,500
Used Chevrolet Camaro
351 Great Deals out of 31,326 listings starting at $2,200
Used Honda Civic
849 Great Deals out of 84,347 listings starting at $750
Used Chevrolet Malibu
1,157 Great Deals out of 79,586 listings starting at $2,500
Used Toyota Camry
1,197 Great Deals out of 83,789 listings starting at $750
Used Pontiac Bonneville
3 Great Deals out of 530 listings starting at $1,799
Used Honda Accord
1,044 Great Deals out of 67,784 listings starting at $1,000
Used Chevrolet Cavalier
3 Great Deals out of 989 listings starting at $695

Used Cars For Sale

2005 Pontiac Grand Am For Sale
131 listings starting at $2,500
2004 Pontiac Grand Am For Sale
265 listings starting at $1,599

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.