I have a no start condition on my 91 Ford Crown Vic.
When I turn ignition key to on position the fuel pump runs but does not shut off. Before, when the ignition switch is in the on position, the fuel pump would prime for a second or two, go off
and then the engine would start.
I checked fuel pressure at the fuel rail, 40 psi. Have good spark to all spark plugs. Compression good. Checked relays too. All good.
Also, Pulled codes with my OTC monitor 2000 and only got a code 81 for the EVP sensor.
Is this a sign that the ecu or pcm is bad ,not shutting the fuel pump off after the initial prime? Any help is much appreciated. Thank you.
When I turn ignition key to on position the fuel pump runs but does not shut off. Before, when the ignition switch is in the on position, the fuel pump would prime for a second or two, go off
and then the engine would start.
I checked fuel pressure at the fuel rail, 40 psi. Have good spark to all spark plugs. Compression good. Checked relays too. All good.
Also, Pulled codes with my OTC monitor 2000 and only got a code 81 for the EVP sensor.
Is this a sign that the ecu or pcm is bad ,not shutting the fuel pump off after the initial prime? Any help is much appreciated. Thank you.
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