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Cranks but will not start

Tiny
LEE ANN JOHNSON
  • MEMBER
  • 1993 PONTIAC GRAND AM
  • 2.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 150 MILES
I have no power to the injector. Have replaced fuel pump ECMAScript and crank position sensor. The car runs after sitting for days or weeks but then after driving a couple times goes back to same problem. Cranks but will not start and no power to injector checked fuses. What else we are completely puzzled?
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Saturday, March 2nd, 2019 AT 7:02 PM

10 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Welcome to 2CarPros.

The only thing I can think of, other than a bad ECM, is the ignition module. Fuel is not delivered through the injectors if no reference pulses are received from the ignition module. Have you checked that?

Let me know.

Joe
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Saturday, March 2nd, 2019 AT 9:12 PM
Tiny
LEE ANN JOHNSON
  • MEMBER
  • 6 POSTS
Okay, will do. Thank you.
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Sunday, March 3rd, 2019 AT 6:39 AM
Tiny
LEE ANN JOHNSON
  • MEMBER
  • 6 POSTS
No did not check, but will. Thank you
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Sunday, March 3rd, 2019 AT 6:44 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi;

Let me know the results. IF that isn't the issue, we will keep trying to find it.

Take care,
Joe
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+1
Sunday, March 3rd, 2019 AT 4:34 PM
Tiny
LEE ANN JOHNSON
  • MEMBER
  • 6 POSTS
Joe, had it tested and was good. Got to checking the fuse box and half of it was dead or no power, rewired it now works. Not sure what took that out but it was the ECM and fuel pump same side fuses. Thank you for you help. I was giving up you gave us hope now we found it, thank you a lot.
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Monday, March 4th, 2019 AT 4:22 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Welcome back:

I'm glad you got it going. What did you have to do to repair the fuse box? And if I was of any help, you're welcome. However, you got this one on your own. Good job.

Take care,
Joe
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Monday, March 4th, 2019 AT 5:30 PM
Tiny
LEE ANN JOHNSON
  • MEMBER
  • 6 POSTS
A wire from the ECM fuse link to the fuse box was broken had to splice a wire from that fuse link over to box. Under the dash. It starts right up now and runs. Rechecked every thing to be sure was good and no abnormalities in system.
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Wednesday, March 6th, 2019 AT 6:28 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Welcome back:

That will do it. Just make sure if you replaced any of the wiring, you used replacement wire that was the same size (not too thin).

Take care of yourself and if you have questions in the future, let us know.

Joe
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Wednesday, March 6th, 2019 AT 12:18 PM
Tiny
LEE ANN JOHNSON
  • MEMBER
  • 6 POSTS
We did and thank you again.
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Thursday, March 7th, 2019 AT 3:18 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
You are very welcome. Take care and in the future, let us know if you have questions.

Joe
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Thursday, March 7th, 2019 AT 5:51 PM

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