98 Merc no start

Asked by May 15, 2018 at 06:54 PM about the 1998 Mercury Grand Marquis 4 Dr GS Sedan

Question type: Maintenance & Repair

I have a 98 Mercury Grand Marquis ran
perfect until fuel pump went bought a new
fuel pump and sending unit and a fuel
pressure regulator put all that on ran fine
and then out of nowhere it won't start check
fuses they're all good switch in trunk is good
replace fuel filter replace cam sensor and
crank sensor still no start there's pressure at
the rail

8 Answers


Do you hear the pump cycle when you turn the key?



Do you have spark?

It will crank with carb cleaner in intake


So it will start if manipulated, Whats your fuel pressure?


Did you check injector relay? or injector pulse?

Idk I got to get a gauge

Pressure is good I'm starting to think computer is dead ..any thoughts

Your Answer:

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