Question about 1994 Pontiac Grand Am

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94 grand am Head Gasket?

The car starts fine, but shakes. it accelerates slower then usual and shakes, up until about 55... then if u give it gas, the shaking stops, then you get off gas, and shaking starts when you get around 55mph.

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  • coolclown200 Jan 26, 2009

    well ive looked in the oil and i pulled the dipstick out, and there was like white chunky stuff.whiteish-brown

  • Horshack May 11, 2010

    If you live in a northern climate, the whitish-brown substance could just be condensation in the oil. I am in Detroit and I get this on my Chevy Colorado. I think that any damage caused by coolant in the oil would be continuous, regardless of the speed you are traveling. Does the whole vehicle shake, or just the engine?

    P.S., I drove for weeks with a gallon of coolant in the oil of my '93 S-10 Blazer with no apparent damage. I sold it to a friend who replaced the intake and head gaskets and as far as I know it was still on the road a year later.

  • 240cpa May 11, 2010

    maybe not a headgasket. Have you looked at the coolant and oil to see if you have some of one in the other? That is a classic sign of a bad headgasket. Are there coolant leaks showing up on the engine block in places that the hoses don't pass over? This could be a vacuum leak, bad EGR, air sensor, etc.

  • Anonymous Mar 15, 2014

    I have had the catalytic converter replaces, the fuel filter, the air filter and the engine control module replaced and it is still doing it!

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Check ur spark plugs for wetness, if u have water in ur cylinders, you have a gasket problem. 94-95 grand am had a problem with intake gaskets, but my grand am also had a manufacture error on the head gasket too. The dragged the heads over it putting the heads back on and smashed the rings..

Posted on May 18, 2009

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My car did the same thing. its possibly a mount that needs replaced (which was my issue) they can cost about $40 if u repare it yourself. not expensive to fix at all. the shaking will stop immediately. Do you find when u get to a good speed it stops shaking but then if u stop and start up again the shaking starts?

Posted on Mar 29, 2009

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It is likely condensation, not a head gasket. Sounds like the shake is a miss. Check the coil adapter housing for carbon tracks, it is likely cracked, and needs replaced

Posted on Mar 01, 2009

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