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Tiny
JASON198
  • MEMBER
  • 1995 GMC SIERRA
  • 5.0L
  • V8
  • 2WD
  • MANUAL
  • 264,000 MILES
I'm getting fuel and spark to the distributor but not to the plugs ive checked and cleaned the grounds I've put all new parts n the distributor still the same so I put a whole new one in nothing changed so I put a new computer new electronic spark module on it and it's still doing the same and everything in the distributor has power and it has no crank sensor
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Sunday, May 22nd, 2022 AT 7:52 AM

1 Reply

Tiny
BORIS K
  • MECHANIC
  • 765 POSTS
Hello,

I would suggest next testing the wiring from the distributor 4 pin connector to the PCM.
Also see wiring diagram in picture below.

Pin A, red/black wire to pin B3 at PCM Distributor reference low
Pin B, tan/black wire to pin D5 at PCM IC bypass
Pin C , purple/white wire to pin B5 at PCM Distributor reference high
Pin D, white wire to pin D4 at PCM Ignition control

How to test wiring.
https://www.2carpros.com/articles/how-to-check-wiring

Hope this helps.

Cheers, Boris
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Monday, May 23rd, 2022 AT 2:15 AM

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