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High Idle / no acceleration !

02-07-2009, 05:43 PM
Please Help!
Replaced a 3.5 V8 (original) to a 3.9 V8(1991) in a 1988 Land Rover. Everything went pretty smooth but cant get idle down and no acceleration. No EFI lights are on. No check engine lights are on. Replaced bypass air valve, and throttle position sensor. I am going crazy! I cant find a manual for it!

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