Rough Idle after cleaning MAF and TB
 

Yesterday I got a little bored and I thought I would open up my intake to check if it was dirty. When everything was open I was in for a big surprise. There was dried up clumps of dirt on my MAF and the Intake plenum was brown inside.

I noticed that the plastic on the driver's side wheel well that protects dust and debris from getting into the intake had a huge hole in it. So I think my CAI might have started sucking up a lot of crap that the guard was suppost to protect it from. The filter was just a generic filter that came with the CAI I bought off an ebay brand called "Chrome Intakes".

I managed to get the MAF and the TB Cleaned. I also cleaned what I could see on the intake plenum. My brother also helped me patch the hole in the fender well with a piece of plastic and some screws.

Before I took it all apart, my Alero idled pretty smooth for its age, but after cleaning it and putting everything back together, it idles strange as if it was misfiring. You can hear it popping out of the tailpipe. While I'm driving casually, it still runs ok. Anyone have any ideas? Maybe the PCM has to adjust to increased airflow? I was also thinking of using some seafoam spray to spray into the upper intake manifold to clean it out.

Here is some pics:


Dirty MAF


Back end of the TB


Part of the Intake Plenum where the TB connects to

what is that yellow stuff? dried urine crystals?

Leaking air somewhere.