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#26 |
Post Whore
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Location: Alabama
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Re: No start issue
I have already checked pin/wire location and continuity from what psi sent me
This is what I got from them And the are correct going by this --- Here is the wiring, check all three wires for continuity BROWN TO BLUE PCM PLUG 73 PINK TO BLUE PCM PLUG 61 RED TO GREEN PCM PLUG 39 PLUG LABELED A,B AND C ----- But i needed to know which of the 3 is signal wire... And I agree , I need all the help I can get..haha
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#27 | |
Senior Member
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Location: Warrenton VA
Posts: 1,050
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Re: No start issue
Quote:
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71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350 |
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#28 |
Post Whore
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Location: Alabama
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Re: No start issue
Thanks..that does help.. I saw several pics like this, but they were all diff wire colors and pin functions..
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#29 |
Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,697
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Re: No start issue
^^^^^^^^^ I agree^^^^^^
{EDIT} I don't know how my post ended up this far down the thread.. I intended it to appear as post #26, right below Acelo's post #25.. Last edited by RustyPile; 02-15-2023 at 05:49 PM. |
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#30 |
Post Whore
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Location: Alabama
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Re: No start issue
Pin C..red..has 12v with switch on
Pin A...brown...has 12v pulse while cranking So cam sensor is working.. And I've got 12v pulse from crank sensor while cranking So crank sensor is working.. Sighhhhhhh... I'm bout ready to burn it to the ground
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#31 |
Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,697
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Re: No start issue
Where did you take these readings?? You should check Both signal wires (cam sensor and crank sensor) at the ECM plug.. This will determine if the wire has continuity..
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#32 |
Registered User
Join Date: Jun 2015
Location: Carlos MN
Posts: 2,042
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Re: No start issue
I hate wiring also.
So is it maybe time to put it on a trailer and take it to some one with HP Tuners? They should be able to see what is working and what isn't. |
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#33 |
Post Whore
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Location: Alabama
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Re: No start issue
Rusty, I did check them at the ecm plug...I backpinned the wires there.
LS, I agree.. thats probably the next step.. I've got alot of putting together before it can leave my shop though
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#34 |
Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,697
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Re: No start issue
Have you discussed with PSI the possibility of a defective harness?? Since the ECM will run in another vehicle, the problem almost has to be with your vehicle..
Something is preventing the ECM firing the injectors.. Sounds like the ECM is "seeing" a wrong feedback somewhere... Pick a shop that has the experience working with these type issues and possibly one that has experience tuning (modifying) GM engine management systems. |
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#35 |
Post Whore
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Location: Alabama
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Re: No start issue
Yep
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#36 |
Registered User
Join Date: Jun 2015
Location: Carlos MN
Posts: 2,042
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Re: No start issue
On my first LS swap a 79 Camaro I brought it to the chassis dyno tuner with no doors, no front sheet metal, no glass and the radiator support just kind of hanging on. It was a pretty basic LS1 swap but it allowed me to drive it after the tune so I could get it to the muffler and alignment shop. Took it back later to the tuner for a few touch ups on the trans shift points.
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#37 |
Registered User
Join Date: Sep 2020
Location: Cleveland, Ohio
Posts: 530
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Re: No start issue
Did you double check the cam sensor wires and/or crank wires to see if they are in the correct location? If they are crossed, you might have an issue there. I saw it on another forum where his harness from PSI had the cam sensor wires crossed and it would not start.
Just a thought. |
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#38 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,631
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Re: No start issue
I checked the wiring pin location once....but I havnt doubled checked it..
But I will The tuner guy said hes seen 3or4 harnesses in the last yr with wrongly pinned plugs
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#39 |
Registered User
Join Date: Sep 2020
Location: Cleveland, Ohio
Posts: 530
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Re: No start issue
If I read the story correctly, the wires were crossed at the sensor, not at the computer. I had that happen once on a LS3. Two of the wires going into the MAP sensor were crossed. It wouldn't start.
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#40 |
Registered User
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,680
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Re: No start issue
Any updates?
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#41 |
Post Whore
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Location: Alabama
Posts: 14,631
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Re: No start issue
no... i put cranking on the backburner to try and get my painting finished..
ive got a tuner guy thats gonna look it over when i get ready
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#42 |
Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,697
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Re: No start issue
What's the latest on the no start? Any progress?
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#43 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,631
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Re: No start issue
Still trying to fix my primer disaster..
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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