running lean, rough idle...

[TISon28s]

So, my service engine soon light came on. Hooked my computer to it, and reads that it's running too lean. Also, rough idle occurs off and on, while in drive, park, and neutral. My warranty has expired. I think maybe a vacuum leak or dirty MAF? Help would be appreciated! thanks!

[JeromeS13]

What code did it give you, specifically? There are steps in the FSM for correcting/further diagnosing based on the specific code that it gives you.

[tollboothwilley]

How many miles?

O2 sensors, spark plugs, MAF, etc....lots of options it could be.

[TISon28s]

I found out the problem. After I cleaned my intake manifold, I didnt tighten on of the middle bolts all the way. It was sucking in excess air. Almost 85k miles for willy.

[tollboothwilley]

Was gonna say it sounded like an intake leak. Glad you found it.

If you haven't changed your spark plugs, you might think about doing that soon. Even though the manual says 105K, I'd do it at least every 50K miles. 30K miles if you use the copper plugs, which some people choose to do.

[TISon28s]

Yeah I already replaced mine. Around 73k.

[2004SILVERG35X]

TISon28s,

I live in sterling as well. Do you know any place in nova where I can find a coupe midpipe for my g35x?