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Shuts off and will not restart, code 42

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The link I sent you listed the AC/Delco pump.

Roy
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Wednesday, February 21st, 2018 AT 1:51 AM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
FO change op chk bad sameness problem
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Saturday, February 24th, 2018 AT 1:14 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
I don’t have a constant pulse at the injector until it starts up, but won’t run long what controls the pulse
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Saturday, February 24th, 2018 AT 1:16 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
Pick hon coil I’m guessing
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Saturday, February 24th, 2018 AT 1:28 PM
Tiny
ASEMASTER6371
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If it is spark thats dropping, the pick up coil is fed power from the module.

Roy
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Saturday, February 24th, 2018 AT 2:41 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
Well right now the truck has no pulse to injectors, just found out the rotor Ian had so to the peice of copper in the middle I guess has Fallon off been bumped from on and off or somthing eles but regardless I have a new
ONe now tryin it again
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Saturday, February 24th, 2018 AT 2:45 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
But still don’t have pulse unless this peice broke after we got it started more to follow give me 15min
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Saturday, February 24th, 2018 AT 2:46 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
I was under the impression that the pulse of the injector gets the polls from the pick up coil is that incorrect information
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Saturday, February 24th, 2018 AT 2:48 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
Trying to figure out how to pick up coil and why the pick up coil would need power from the module one the way it looks to be wired is it comes off of the pick up coil through the module to the coil and then on to the spark plugs so on and so forth is that not the way it supposed to run
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Saturday, February 24th, 2018 AT 2:50 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
Unless I cross wires to modual it will not go
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Saturday, February 24th, 2018 AT 3:07 PM
Tiny
ASEMASTER6371
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The pickup coil controls spark only.

The pulsating of the injectors is controlled by the ecm quad drivers. The ecm makes and breaks the ground on the injectors to fire off the injectors.

The ecm is a common failure for this.

Is there any other codes popping up?

Roy
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Saturday, February 24th, 2018 AT 3:09 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
Started and is running now, but just shut off again very frustrating
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Saturday, February 24th, 2018 AT 3:11 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
No codes at all, let me jimmy it again and see if I can get
Any
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Saturday, February 24th, 2018 AT 3:12 PM
Tiny
ASEMASTER6371
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When it does run. Tap the ecm with a screwdriver and see if it stalls

Roy
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Saturday, February 24th, 2018 AT 3:16 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
I can’t keep it running for long but will try again, eco behind gloves box correct
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Saturday, February 24th, 2018 AT 3:36 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
ECm pcm two differsnt things?
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Saturday, February 24th, 2018 AT 3:41 PM
Tiny
ASEMASTER6371
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Ecm is behind the glove box

before 96 it is an ecm. After 96 it is a pcm

Roy
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Saturday, February 24th, 2018 AT 3:43 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
Copy that, can it b rest reflashed ect or with what I have for the problem it’s a change
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Saturday, February 24th, 2018 AT 4:00 PM
Tiny
ERIC HOWARD
  • MEMBER
  • 74 POSTS
WOW looks like a parshal dash removal
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Saturday, February 24th, 2018 AT 4:25 PM
Tiny
ASEMASTER6371
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Nope, comes down very easily. It comes down after removing a couple of bolts. It is a plug and play. Just have to change the prom.

Roy
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Saturday, February 24th, 2018 AT 4:33 PM

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