Question about 1993 Mercury Grand Marquis

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1993 Mercury Grand Marquis Problem:

Have a bucking problem. Changed spark plugs did not help. Car starts easy and runs smooth as glass. Hit the gas and it will throw you back in your seat. Get on the hwy doing 60 and boom..boom.....boom..boom..hard bucking all the way to work 60- 80 times or more. Could this be a fuel filter? or something more serious. Checked the wires to the coil packs and they are clean. Please help with advice.

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  • god_666 Sep 03, 2008

    I have a similar problem...the car starts and runs fine but when I give it gas is sputters and won't go and then it will. I replaced the fuel filter and that helped but not for long. I think I should have been a mechanic! Any help would be appreciated...thanks!

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Well in my madness of trying to figure it out with mama wanting it fixed and fixed fast and it being Hot! outside. I set back in the cool air with drink in hand wishing she had to do it instead of me, thought about it and said Ahhhhh! Coil pack or wires. I chose "coil pack" The problem is gone, Mama is happy and the world is right once again.
Coil pack would heat up and then breakdown.

Posted on Jul 25, 2008

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It might be the valves not sealing and/or Engine timing could be off

Posted on Nov 19, 2008

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