No start

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
Sunday, May 22nd, 2022 AT 7:52 AM

1 Reply

Tiny
BORIS K
  • MECHANIC
  • 836 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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