Question about 1990 Mercury Grand Marquis

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How do i know which spark plugs are right for my car?

I have a 1990 mercury grand marquis and i need a tune up and i need to know what parts to get!

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  • 78 Answers

Auto zone has them. "autolite platinum ap2545",very cheap$$.

Posted on Dec 25, 2008

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1 Answer

Where does the top part of shock mount on 1990 mercury grand marquis?


Strut tower in plain site, if you open the hood,
should have 3 nuts to remove for top bearing plate

The rear ones may be in the trunk

Jan 22, 2013 | 1990 Mercury Grand Marquis

2 Answers

What is the gap for the spark plugs on a 1990 Mercury Grand Marquis?


That should be under the hood on the Federal
Emission Label

Any spark plug manufactures web site, has it next to
the plugs avail to fit your engine code

May 24, 2012 | 1990 Mercury Grand Marquis

1 Answer

Need to adjust doors on 1990 mercury grand marquis. how do i do this?


It may be better to go to body shop the body could be mis-alined this way they can get the doors ajusted.

Aug 29, 2010 | 1990 Mercury Grand Marquis

1 Answer

I need to know how to remove the intake off of a 1990 mercury grand marquis 5.0


is it fuel injected or carburated usually its just a matter of pulling off the carb or plenum from the top of the intake and then the valve covers and move all the wires and **** out of the way then you should have access to 10 or 12 bolts un bolt them and use a thick flat tip to pry the intake from the heads. but make sure all the bolts are out before that and pop should come right off

Oct 01, 2009 | 1990 Mercury Grand Marquis

1 Answer

Fuel system


theirs a filter in the line on the frame close too the drivers door

Mar 03, 2009 | 1990 Mercury Grand Marquis

1 Answer

Replacement of head and valve cover gaskets on 1990 grand marquis


Use a putty knife. VERY carefully to make sure that you do not put deep scratches anywhere. It will remove them just fine

Feb 07, 2009 | 1990 Mercury Grand Marquis

1 Answer

I have a 1994 Mercury Grand Marquis... it pings on accelaration, do I adjust the timing and if so.. how ?


use a higher octane gassoline
sounds like u got a spark knock.
also check the tune up parts

Dec 13, 2008 | 1994 Mercury Grand Marquis

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