rough idle and power hesitation
#1
rough idle and power hesitation
So I have been having this problem with rough idle and the power ******* out when I accelerate. I have 1/4 inch plenum spacer and chrome spacer. It has a nwp throttle body with a throttle body spacer and a 3.5 inch furookie intake. The exhaust is a motordyne tdx2 with art pipes. I noticed. The problem after I installed all the aftermarket performance parts I went by the motordyne specs to make sure the plenum was tight and also relearned everything. I took the 05 g35 coupe to the dealer and they ran tests vacuum leak tests and no codes were diagnosed. I've switched the trotted body back to factory and it still did the same thing after test driving it. What could this be?
#2
Join Date: May 2017
Location: Washington State
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Coupe 6MT Premium RAS
#3
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What kind of tests did they do? Do you have an auto or manual. The manual might require an exhaust relearn, which only the dealer or if you have consult can do. What is your idle rpm at?
If you have an obd2 scanner you can monitor fuel trims to see if the ECU is havingto add or subtract fuel.
If you have an obd2 scanner you can monitor fuel trims to see if the ECU is havingto add or subtract fuel.