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#11

04-13-2011, 09:53 PM

dhvaughan

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hold up on pcm replacement. did it run before you pulled the motor?

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#12

04-13-2011, 09:54 PM

HeyYou

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Don't bother sending it out to have it flashed, get an SCT tuner from HemiFever, for 265, get three tunes, free updates, and also can read codes and such with the tuner. Can reflash your truck as often as ya like, swapping for the different tunes, depending on what you want.

And its cheaper.....

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#13

04-13-2011, 09:55 PM

Mad_Scientist

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Quote:

Originally Posted by kikidbird

I had my PCM flashed in mid 2006 by B&G Performance for $350.00 and they are still charging the same. I have checked all the wiring, connectors and sensors and I continue to have the same problem, no start and a cold(weak) spark. My assumption is the PCM is not functioning properly.

Im considering buying a PCM from the salvage for $125.00, if that solves the problem then I will send the PCM to get flash. Mad_Scientist, where did you get your PCM flashed for $70.00?

Local dealership, but I knew a guy there, so that may (probably did, come to think of it) have had an impact on the price.

I can't see how it could add up to be anywhere around $350 though. All they do is hook it up to a computer for 20 or so minutes. That's if you can get past the "we have to run some tests" BS and get straight down to business.

Regardless, I'd eliminate (and re-eliminate) all other options before dropping that kind of $ to replace it.

Last edited by Mad_Scientist; 04-13-2011 at 09:58 PM.

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#14

04-13-2011, 10:01 PM

dhvaughan

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oops, i reread the first post that said it was running fine before you did the overhaul. so - there's no reason to assume that the PCM has gone bad just sitting there - unless you didn't disconnect the battery when plugging/unplugging things.

i'm no expert, but if you're getting voltage for 1 second at ignition on, and then loosing it, it "might" be an ASD shutdown. take a look at the very detailed no-start threads from cmckenna. he had some really detailed troubleshooting tips.

a few of many
https://dodgeforum.com/forum/2nd-gen...4-bad-pcm.html
https://dodgeforum.com/forum/2nd-gen...sibly-pcm.html
https://dodgeforum.com/forum/2nd-gen...condition.html
https://dodgeforum.com/forum/2nd-gen...-me-crazy.html

Last edited by dhvaughan; 04-13-2011 at 10:11 PM.

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#15

04-20-2011, 09:23 PM

kikidbird

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Still Chasing my Tail

I have been troubleshooting the problem and I did make a little progress. I have spark out of the coil and on cylinders # 5 and # 8. THATS IT! I switched the wires around, changed the cap and rotor and still the same problem. Any Ideas?

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#16

04-20-2011, 09:59 PM

HeyYou

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Crank Sensor.

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#17

04-21-2011, 02:11 AM

4085spd

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Try and help you out here.......

Need to check voltage at pcm C1 PIN 17 ?

Voltage at C1 pin 22 ?

Voltage at C2 pin 31 ?

DATA LINK CONNECTOR to check the power grounds. pin 4 is chassis ground and pin 5 is sensor ground check resistance ?

Last edited by 4085spd; 04-21-2011 at 02:18 AM.

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