Nelson Mail Order Tune Bad?
Jul 2, 2007 | 05:41 PM
#11
Originally Posted by FarmTruc
You just did a major overhaul and I wouldn't be surprised if it was a loose or missed ground. Also, the P/N switch could be bad.
No power at all to the starter means, it's not getting power. Check the relay too to ensure it's powering.
I've never had a pcm "go bad" we've had a bad calibration upload, or something similar, like high idle, or injector circuit issue, but if a pcm leaves here, it was scanned, programmed, and edited, which usually means it's good, but not 100%.
We can send you another one, just let me know.
Another thing to check, turn the key to the ON position, if you hear the fuel pump prime for 2 secs, the pcm is probably good, if not, make sure you have power to it
allen
No power at all to the starter means, it's not getting power. Check the relay too to ensure it's powering.
I've never had a pcm "go bad" we've had a bad calibration upload, or something similar, like high idle, or injector circuit issue, but if a pcm leaves here, it was scanned, programmed, and edited, which usually means it's good, but not 100%.
We can send you another one, just let me know.
Another thing to check, turn the key to the ON position, if you hear the fuel pump prime for 2 secs, the pcm is probably good, if not, make sure you have power to it
allen
Jul 2, 2007 | 05:48 PM
#12
Originally Posted by FarmTruc
You just did a major overhaul and I wouldn't be surprised if it was a loose or missed ground. Also, the P/N switch could be bad.
No power at all to the starter means, it's not getting power. Check the relay too to ensure it's powering.
I've never had a pcm "go bad" we've had a bad calibration upload, or something similar, like high idle, or injector circuit issue, but if a pcm leaves here, it was scanned, programmed, and edited, which usually means it's good, but not 100%.
We can send you another one, just let me know.
Another thing to check, turn the key to the ON position, if you hear the fuel pump prime for 2 secs, the pcm is probably good, if not, make sure you have power to it
allen
No power at all to the starter means, it's not getting power. Check the relay too to ensure it's powering.
I've never had a pcm "go bad" we've had a bad calibration upload, or something similar, like high idle, or injector circuit issue, but if a pcm leaves here, it was scanned, programmed, and edited, which usually means it's good, but not 100%.
We can send you another one, just let me know.
Another thing to check, turn the key to the ON position, if you hear the fuel pump prime for 2 secs, the pcm is probably good, if not, make sure you have power to it
allen
Jul 2, 2007 | 05:59 PM
#13
Performance Trucks Sponsor
iTrader: (5)
Joined: Jul 2002
Posts: 1,439
Likes: 0
From: san antonio, tx
Originally Posted by benvortec
The fuel pump does cycle when the key is turned over
Jul 3, 2007 | 11:38 AM
#15
pull the negative battery tem off and let it sit for a min then try and start it.when i got the first pcm from nelson thats the only i could start the truck.but after i returned the PCM i never had any problems with any other PCM`s again truck would fire right up..
Jul 3, 2007 | 12:37 PM
#16
Originally Posted by chuckie311
pull the negative battery tem off and let it sit for a min then try and start it.when i got the first pcm from nelson thats the only i could start the truck.but after i returned the PCM i never had any problems with any other PCM`s again truck would fire right up..
Jul 5, 2007 | 04:36 PM
#19
SOME PROGRESS! But still not running! Help me out
So today after hours of trying to figure out my problem and screwing around with the neutral safety switch i got the motor to turn over! Tell me what the problem is here: the truck will only turn over if i first pull the shifter down into neutral and then put it back in reverse... and then it will fire while in reverse.(Neutral safety switch screwed up?) The truck still won't run! Remember however that i still have never got to do a security relearn because it won't attempt to turn over in park. What should i do?
