Question about 1990 Ford Mustang

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90 mustang 5.0l no fuel from injectors

I've replaced ign.module, pick-up coil, got fire to plugs (good arc), timing tdc, got good fuel pressure to the rail, turn motor over several times without coil wire to check for fuel entering chamber (none), checked EEC relay (with new relay), did a continuity check of every wire going from each injector to harness connector that goes into PCM and there's is no break in wires. I even took intake upper off, just to check for any possible fuel residue, nothing.

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  • Ford Master
  • 6,826 Answers

It is most likely the map sensor,make sure there is vacuum going to it,if there is a good line of vacuum going to it,then I would say replace it

Posted on Jun 06, 2010

  • Trodd Prudhomme Jun 06, 2010

    doesn't the map measures manifold pressure? so are you saying it could cause the car not to crank and puls injectors?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jun 06, 2010

    Yes,it will not allow injectors to pulse,it gives signal to the ecm,to drive the injectors,and how to drive the injectors.

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