WONT RUN

1989 Ford Ranger

Tiny

revansickle7

August, 8, 2014 AT 8:24 AM

Have replaced everything or have checked it and it wont run unless you unplug the alternator.

FOUND 4352 RELATED QUESTIONS

My Alternator Quit Charging

22 ANSWERS
31 IMAGES

Charging System Trouble

27 ANSWERS
5 IMAGES

7 Answers

Tiny

hmac300

August, 8, 2014 AT 9:49 AM

Check fuses 3-7-10 first then check battery for condition including load test. If stilldoing it have alternator checked by a pro. Also scan for codes and check fuel pressure with a gauge

Tiny

revansickle7

August, 8, 2014 AT 9:52 AM

Fuses good, battery load test good, new alternator doing same as old one and had them both checked

Tiny

revansickle7

August, 8, 2014 AT 9:54 AM

Fuel pressure 35 and 33 when injectors are firing.

Tiny

hmac300

August, 8, 2014 AT 9:58 AM

Then have a local pro look into it as it's has a short in system. Also check the eec power relay

Tiny

revansickle7

August, 8, 2014 AT 10:17 AM

Ecc relay good. Nothing going to ground thats not a ground. Ford dealership cant find the problem either.

Tiny

hmac300

August, 8, 2014 AT 12:28 PM

No idea what to tell you then are you disconnecting the red/lt grn wire to alternator? If so those go to the ignition coils so itmay be eithr grounding out in alternator and or is shorting against engine block or bracket and when you unplug it, it moves far enough away to stop the short so check there. It also goes to dist ignition module as well as radio capacitors. Maybe the capacitors are bad dn causing this as well.

Tiny

revansickle7

August, 8, 2014 AT 12:38 PM

Unplugging the green with red strip that goes from alternator to amp meter in truck. You can also unhook the white or yellow with white strip that goes to alternator and it runs right. Caps for radio are unhooked. Tried that. Its anytime you allow the alternator to charge is when it runs bad. Putting out 13.5 volts.

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