Redline issue

97crewcab

Wrong.
Joined
Aug 1, 2006
Messages
2,804
Helping a friend try to figure out his redline issues.

Truck is a 98.5 5spd

With the redline (normal and unlimited box does the same), it will rev up until 38xx rpm and then the redline will time out. It kept happening last year and if he was going down the track he could turn the fuel back on but it would turn off again.

We changed to a new battery, changed the way we power up the redline, changed the tps, changed the redline, and it does the exact same thing within 100rpm every time.

Hopefully we are missing something obvious?
 
What is your volts at the main red and black wires? ( the one that taps into the vp44 wiring harness and pump tap)
 
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