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

4,525

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 7,580
#2 John Saffrahn
John Saffrahn
Reputation 1,590
#3 Tom Demyan
Tom Demyan
Reputation 1,410
View All

Related Models For Sale

Used Pontiac Grand Prix
18 Great Deals out of 2,919 listings starting at $1,995
Used Pontiac Firebird
6 Great Deals out of 745 listings starting at $2,500
Used Ford Mustang
390 Great Deals out of 47,511 listings starting at $1,800
Used Chevrolet Camaro
148 Great Deals out of 32,614 listings starting at $1,729
Used Honda Accord
770 Great Deals out of 88,118 listings starting at $1,150
Used Chevrolet Malibu
864 Great Deals out of 81,222 listings starting at $995
Used Toyota Camry
845 Great Deals out of 90,969 listings starting at $850
Used Nissan Altima
892 Great Deals out of 80,545 listings starting at $1,800
Used Chevrolet Monte Carlo
17 Great Deals out of 1,380 listings starting at $1,995
Used Pontiac Bonneville
542 listings starting at $3,699

Used Cars For Sale

2004 Pontiac Grand Am For Sale
318 listings starting at $1,995
2002 Pontiac Grand Am For Sale
141 listings starting at $1,593