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3.8 Holden lick g4


Dan turbo 3.8

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Just put a new motor in a had to redo TPS as it was reading 45% and was sitting on 1500rpm and wouldn’t let it go lower and then when it redid TPS on laptop it let in come down in RPM but now it’s pops like off time any RPM lower than 2000RPM. Iv tryed time 10* each way and it still doesn’t make a difference.???????
any help   Thanks 

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7 hours ago, Dan turbo 3.8 said:

but now it’s pops like off time any RPM lower than 2000RPM

Im not sure what you are trying to say here.  So it runs fine above 2000RPM but not below?  What does "Pops off time" mean?  misfire?  Back fire through the intake?  Bang in the exhaust? 

Have you checked basics like timing and fuel pressure?  Sounds more like a lifter not bled down or something?

 

 

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