Question about 1988 Mercury Grand Marquis

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I have an 88 mercury grand marquis sterted drove all day went the next day car wouldnt start someone told me timeing chain jumped replaced that replaced starter selinoid stater spark plugs router router cap still wont start its geting fuel 12 volt to all fuses geting proper voltege to coil packs im stumped it has proper ground as well

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  • Mercury Master
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Lets start at the beginning.
Did anybody check to see if the timing chain was really in need of replacing ?
Did you replace the starter and solenoid because it would not crank ?
Is it now getting spark to the plugs, and fuel to the injectors ?
Are the injectors getting voltage and a ground signal from the computer ?
Do the cylinders have proper compression ?
Is the rotor in the distributor turning when you crank the engine ?

Posted on Jan 15, 2013

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Posted on Jan 02, 2017

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SOURCE: 1998 Mercury Grand Marquis GS runs Rough when cold

I have the same problem and can
Not figure it out did u have any luck?

Posted on Oct 17, 2011

danoyachtcap
  • 2899 Answers

SOURCE: NO SPARK OUT OF COIL.

usually those coils are pulsed at the ground wire end of the coil. So you could have 12 volts in. The question is...do you have 12v out the ground end?
If so then the coil pulseing unit may be bad.That signal,should come from the distributor....or maybe from the ECU Processor.

Posted on Jun 26, 2011

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