PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Not start after cam

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Old Feb 5, 2025 | 10:04 AM
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Default Not start after cam

I was able to start it and have it run with the throttle 1/4 open and then it died and it won’t start back up. It was running really rich so I decided to put in my tune which I decreased VE idle by 15% and increased my idle to 950 I let the car sit overnight and tried to start it again, but it will not start. I’m really stuck in any help would be very helpful.

cam is a torquer V2
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Old Feb 5, 2025 | 10:35 AM
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have you checked wiring? I was a dumb dumb who pinched my cam sensor harness with the intake on re install and it gave me all kinds of issues. id check into that. my car would run but it would do a bunch of random stuff like die surge kill battery ect. took me weeks of trial and error new ecu crank sensor etc. all along was a pinched harness
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Old Feb 5, 2025 | 10:47 AM
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Base Running Air Flow. Start there.

Set all to Open Loop, Speed Density, then into the Base RAF.
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Old Feb 5, 2025 | 11:40 AM
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Originally Posted by the_merv
Base Running Air Flow. Start there.

Set all to Open Loop, Speed Density, then into the Base RAF.
mot will not start that’s my problem
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Old Feb 5, 2025 | 11:44 AM
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does everything else light up such as dash, interior lights, etc? is the battery drained? need more info. i see you're in PA, im over in lancaster, pa for what its wroth
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Old Feb 5, 2025 | 11:46 AM
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Originally Posted by fst100
does everything else light up such as dash, interior lights, etc? is the battery drained? need more info. i see you're in PA, im over in lancaster, pa for what its wroth
yeah, I’m in Collegeville yeah everything lights up. It started last night with the throttle a little more than 1/4. Open battery is not drained. I’m putting a battery charger on it when I get home. but it won’t start right now.
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Old Feb 5, 2025 | 12:21 PM
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any codes? does the fuel pump prine? does starter turn over?
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Old Feb 5, 2025 | 12:34 PM
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Originally Posted by fst100
any codes? does the fuel pump prine? does starter turn over?
no code fuel pump is good and it turns over yesterday night it started and ran with throttle input but not it does not I might try to reset the fuel trims and unplug the maf
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Old Feb 5, 2025 | 03:42 PM
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Post the stock tune, current tune and log of it not starting along with a list of everything done.

There's no way anyone can help you without that information.
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Old Feb 5, 2025 | 04:22 PM
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here u go
toquer v2 with speed engering long tubes
Attached Files
File Type: hpt
test start.hpt (221.0 KB, 28 views)
File Type: hpt
2000 camaro stock tune file.hpt (230.1 KB, 20 views)
File Type: hpl
try to start.hpl (21.8 KB, 17 views)

Last edited by connor neimetz; Feb 5, 2025 at 04:54 PM.
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Old Feb 5, 2025 | 04:23 PM
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Sorry, I meant to say data log
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Old Feb 5, 2025 | 04:29 PM
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Is there a reason you changed OS?

One tune is a 2000 and the other is a 2002

The injectors are different between those two years also
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Old Feb 5, 2025 | 04:55 PM
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there you go
Attached Files
File Type: hpl
try to start.hpl (21.8 KB, 18 views)
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Old Feb 5, 2025 | 07:45 PM
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Soo it's turning over just not starting?

I said what I said, for a reason....

Originally Posted by the_merv
Base Running Air Flow. Start there.

Set all to Open Loop, Speed Density, then into the Base RAF.
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Old Feb 5, 2025 | 08:12 PM
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Why do the IAT and ECT both show -38 degrees?

Why does the MAP not change while cranking?

Last edited by mrvedit; Feb 6, 2025 at 08:05 PM. Reason: Remove non-informational portion
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Old Feb 6, 2025 | 08:13 PM
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It currently shows your sensors are all disconnected. Cut harness? Really bad grounds? PCM partly disconnected?
Once you have reasonable values for ECT and IAT showing in your scanner, you should be closer to a start.

I apologize that two long-time, very experienced and generally very helpful members decided to have a "personal" conversation on your thread.
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