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1992 Grand Marquis, no fuel to injectors

Tiny
AMW
  • MEMBER
  • 1992 ALL OTHER MAKES ALL OTHER MODELS
I have a 1992 Grand Marquis, 100,000 miles, turned the car off one evening, wouldn't start the next day, no spark. Ended up replacing the PCM control module under hood, replaced the main computer, pretty much everything pertaining to the electrical system. Finally after replacing the Diode we got spark, but now we the fuel injectors are not receiving fuel, the fuel pump is working, there is gas in the gas rail, just no fuel to the injectors, any ideas? Any help would be greatly appreciated. [/B]
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Thursday, December 7th, 2006 AT 10:22 PM

4 Replies

Tiny
CATCH_15
  • MECHANIC
  • 250 POSTS
Have you put a test light on them while you are cranking the engine to see if they are pulsing?
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Thursday, December 7th, 2006 AT 10:27 PM
Tiny
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No, will check this tonight afterwork. Any suggestions if they are or are not pulsing?
Thanks
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Friday, December 8th, 2006 AT 5:13 AM
Tiny
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Used light to check injectors, they are pulsing.
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Saturday, December 9th, 2006 AT 3:34 PM
Tiny
CATCH_15
  • MECHANIC
  • 250 POSTS
I would say the next thing to do would be to run a fuel pressure test. If there is fuel in the rail and the injectors are pulsing, perhaps there's not enough fuel pressure. Fuel injected cars need between 35 and 60 psi of fuel pressure to run.
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Saturday, December 9th, 2006 AT 3:44 PM

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