STARTING PROBLEM

  • Tiny
  • rockymtnspot
  • 1991 Chevrolet Truck
  • V8
  • 2WD
  • automatic

1991 chevy 3500 w/ 454. Intermittant problem starting. No spark or fuel. I have replaced ecu, ignition module, cap rotor, coil wires and plugs. Fuel filter and relay.

Wednesday, February 9th, 2011 AT 5:29 PM

13 Answers

  • Tiny
  • JDL
  • Expert
  • 16,236 posts

Did check primary voltage at the coil, pink wire, goes hot with the key on. Any voltage? Any applicable trouble codes? The pick-up coil sends a signal through the ignition module to the computer, without that signal, no spark or injector pulse.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 5:37 PM
  • Tiny
  • rockymtnspot
  • Member

I replaced coil already. Do not know how to check for pulse. This problem is wierd. All of the sudden it will start and run for 2 to 5 weeks, then just not start.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:03 PM
  • Tiny
  • rockymtnspot
  • Member

I am going to check for codes now

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:04 PM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

Did you check for voltage on the pink wire, key on. Which coil did you replace? I don't believe you can replace pickup coil with removing distributor?

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:15 PM
  • Tiny
  • rockymtnspot
  • Member

I just checked for codes. There were no codes thrown.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:15 PM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

Can you answer my questions about the pick-up coil and pink wire?

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:17 PM
  • Tiny
  • rockymtnspot
  • Member

I replaced the coil that is outside of distributer. Where the coil wire goes.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:19 PM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

How about the pink, use a voltmeter, should be hot/voltage with the key on.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 6:31 PM
  • Tiny
  • rockymtnspot
  • Member

I dont have voltmeter. I have TBI with 2 injectors. One injector has a red and blue wire and the other injector has a green and white wire. I used a simple test light and checked the red wire and it lit up with the ingnition turned on.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 7:03 PM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

You said you have no spark. Without at least a voltmeter or testlite, it's hard to do any testing.

Was this
answer
helpful?
Yes
No
Wednesday, February 9th, 2011 AT 7:23 PM

Please login or register to post a reply.

Similar Questions