Trippmeister answered 2 years ago
Did you scrape down the surfaces for the new gasket? Bet there's a leak. Re-do the job, squirt gas around the intake joints, and see what happens. (just a little)
Why does my my 1988 grand marquis idle rough in park but acts fine when I press the gas
1988 Mercury Grand Marquis
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Maintenance & Repair
Replaced my intake manifold and now my car idles rough
2009 Mercury Grand Marquis LS
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Maintenance & Repair
I have a 2006 Grand Marquis, Normal 4.6L V8. Every couple days, my car will randomly begin idling seriously rough, with the rpms dropping to 300-500, then jumping back to normal every few seconds....
2006 Mercury Grand Marquis LS Premium
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Maintenance & Repair
So , I just bought a 1985 Grand Marquis from someone and it won't idle down. I was wondering does anyone happen to know why or has had that problem before?
1985 Mercury Grand Marquis
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Maintenance & Repair
My grand marquis ac was working fine and a few nights ago I turned it on and it stopped blowing air, and wont do anything, I'm trying to figure out what's wrong! Thanks in advance!!!
2004 Mercury Grand Marquis
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Maintenance & Repair
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