Mechanics

ENGINE CRANKS BUT WON'T START, GOOD FUEL P

1990 Ford Ranger

Electrical problem
1990 Ford Ranger 6 cyl Four Wheel Drive Manual 123000 miles

Hello,

I have a 1990 ford BroncoII with a 2.9 v6 that cranks great but won't start it does try initially then nothing. Fuel pressure is good 40 psi, strong secondary ignition, have tested all of the wiring between the ECM and sensors and injectors. TFI ignition module tests good. With a noid light on injector connector it will only flash for a couple seconds when the starter is engaged then stops. Good power on positive side of injector harness and to ecm. Also exchanged a matching ecm with no change. The engine will run on either or if you pump the accelerator it will try to stay running without either. Any help would be appreciated. Thanks in advance.
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Mrpraeg
July 22, 2010.



Hi mrpraeg, Welcome to 2carpros and TY for the donation

Could be the injector ground driver on the white and tan wires open or an injector is shorted out dragging the rest down or an input signal to the computer missing from a camshaft or the crankshaft position sensor to synchronize the injectors

Rasmataz
Jul 23, 2010.
Injector wiring and injectors check ok. Where can I find the Camshaft sensor or Crankshaft sensor? I am unable to find any info for either one. Test specifications and locations would really be helpfull. Thanks in advance

Tiny
Mrpraeg
Jul 29, 2010.
The crankshaft position sensor is tested with an ohmmeter. Generally the sensor will read between 300-350 ohms. Sorry no pic abvailable

There's no camshaft sensor listed for it

Rasmataz
Jul 29, 2010.