KevinH

My '93 N/A is suddenly running rough below 2500 RPM. I cleaned the throttle bodies with no change. I sprayed about 1/2 a can of carb cleaner into line that goes to the AAIC (sp?) valve too (one on the back of the driverside block). Realize, that this was like an overnight change, which I don't understand. I have gotten a chance to check the computer code(s) yet. I have re-set the computer and it did it once again. Looking for ideas - Thanks!

b300z

did you search? there are many threads about problems like this...

read thru this thread, and go thru the attached linkshere .

carb cleaner is not a good thing to put in a Z

Aphrodite

just a thought... check the wires going to and coming from the PTU, I had a similar problem and had one wire shorted to another because they had been rubbing on a belt.

KevinH

Yeah I did a search! Your thread didn't do me any good either. And what do you think throttle body cleaner is? Its the same as carb cleaner!

I did find my issue. I went to twinturbo.net and found what I needed.

b300z

carb cleaner is not the same as throttle body cleaner. throttle body cleaner is made to be used on EFI cars because some throttle bodies have a permanent lubricant, which carb cleaner will remove. i bought a can of carb cleaner a while ago, and i believe it said on it not to use on EFI vehicles...

what was the culprit, btw

snwbrderphat540

yeah what was the culprit, cuase now that my car shat on me looks like the other N/A 300's are following in suite.