Mechanics

CAR CRANKS BUT WON'T START

1990 Ford Mustang • 12,400 miles

1990 Ford Mustang GT car had a bad fuel pump putting out 9 psi replaced pump and now the car won't start
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Ashman_0
July 24, 2012.




Check if you're getting an injection pulses from the injectors and also if you're getting spark? Also refer to this link for more information: http://www.2carpros.com/articles/car-cranks-but-wont-start

Tiny
Rasmataz
Jul 24, 2012.
I checked the entire fuel system all appears good. Disconnected the return at the tank cycled and got a return. Coil, plugs, wires, and according to your post the icm and the pip sensor and the eec relay. Exhaust pressure is strong enough I can't hold my hands over the tailpipes when cranking over. Ignition is firing to every plug.

Tiny
Ashman_0
Jul 25, 2012.
Will it start with starting fluid?

Tiny
Rasmataz
Jul 25, 2012.
Nope it will not start with starting fluid either.

Tiny
Ashman_0
Jul 25, 2012.
What about spark do you have it-if so is it a snapping blue spark?

Tiny
Rasmataz
Jul 25, 2012.
Plugs were wiped dry, now are wet and I am getting plenty of snapping blue spark.

Tiny
Ashman_0
Jul 25, 2012.
I went through every step, how can you tell if the ecu has gone? I am good on the noid light test and and it says the same permanent hot to the fuel injectors is the same circuit that powers the eec relay and ecu correct? I just don't understand it the car would at least start with the old weak fuel pump and filter. That is all thats been changed. Would a new pump make the fuel pressure regulater go bad? I pulled the vacuum hose off of it there was no fuel in that. I would think there would be probs with the return if it were bad. Blue spark will jump more then 3/8 it has an accel high output coil only. I left the ignition as normal checked timing its good, ran a timing light on every plug wire. I'm at my ends, I don't know what it is. It doesn't hit a lick at all just cranks and cranks.
AD

Tiny
Ashman_0
Jul 25, 2012.
Check compression and the valve timing if its within specs

Tiny
Rasmataz
Jul 26, 2012.

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