I have a 1999 Pontiac Grand Am GT. I just replaced the lower intake manifold Gasket due to a coolant leak. And its still leaking coolant. Any ideas?


Asked by Jun 24, 2014 at 01:17 AM about the 1999 Pontiac Grand Am 2 Dr GT Coupe

Question type: Maintenance & Repair

3 Answers

Norm Davis

Sorry to have to make you take it off again. Check the mating surfaces with a metal straightedge. Use only a minimal amount of silicone gasket cement - some mechanics install these gaskets dry and they still work just fine if the surfaces are clean (surgically clean, that is). If the mating surfaces aren't absolutely flat then the engine has overheated at some point, and you won't get a decent seal unless you have them both machined.

Best Answer

Here the thing I didn't do it. I took it back to the mechanic right after it happened and he said its just coming out of the overflow and it should be fine. But I drove it again and it keeps happening. Especially at high rpms. When I accelerate hard the low coolant light comes on and I hear a squeak in the engine like a wet belt then I stop and turn it off and its leaking everywhere and its all steaming and stuff. I have no clue what to do. Some people said water pump? Not sure

Norm Davis

Belts will squeak anytime they get wet, it doesn't mean the water pump is at fault. You'll need to find where the coolant is coming from before trying to diagnose the problem. Blast everything dry, take the car out for a short ride, check the engine for anything wet. Keep doing that until you locate where it's coming from. Some leaks only happen in a hot engine, so it m ay take a few trips to nail it.

Your Answer

Add photo

Related Questions

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,981 nationwide Grand Am listings starting at $1,995.


Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
Reputation 7,080
#2 John Saffrahn
John Saffrahn
Reputation 1,480
#3 Tom Demyan
Tom Demyan
Reputation 1,240
View All

Related Models For Sale

Used Pontiac Grand Prix"
31 Great Deals out of 4,404 listings starting at $1,800
Used Chevrolet Impala"
948 Great Deals out of 35,738 listings starting at $700
Used Pontiac Firebird"
12 Great Deals out of 893 listings starting at $2,900
Used Ford Mustang"
746 Great Deals out of 41,448 listings starting at $900
Used Chevrolet Camaro"
840 Great Deals out of 39,081 listings starting at $2,650
Used Chevrolet Malibu"
1,170 Great Deals out of 72,680 listings starting at $695
Used Pontiac Bonneville"
867 listings starting at $2,950
Used Honda Civic"
1,178 Great Deals out of 58,588 listings starting at $1,295
Used Nissan Altima"
1,487 Great Deals out of 87,985 listings starting at $1,195
Used Honda Accord"
1,316 Great Deals out of 78,668 listings starting at $1,395
Used Jeep Grand Cherokee"
1,230 Great Deals out of 74,261 listings starting at $1,500

Used Cars For Sale

2004 Pontiac Grand Am For Sale
483 listings starting at $2,699