Header Install Troubleshooting (1 Viewer)

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Feb 16, 2011
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Eastern, OR
I'm having a friend with a muffler shop install my Doug Thorley headers. He's got them in. Started the truck it ran rough for minute then died. Cranked it for a bit, it started, ran for a minute, then died, now cranks but won't start. He disconnected the battery for installation of headers and replaced the motor mounts while installing the headers. Truck had no problems before header install. Always started and ran great. Years ago it had the immobilizer crank but no start issue. That was remedied with the kit the guy here in mud sells. So what to do now? I'm not at his shop, but will be in a few hours.

Any suggestions on what to do would be greatly appreciated.
 
Last edited:
Got to the shop. All is well. It was the old immobilizer issue. It just got disconnected. All I had to do was re-secure the connections.
 

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