Rough idle after MAF cleaning?

[ASpec818]

I recently cleaned my MAF in hopes of chasing out a 0430 CEL. I took the MAF out, sprayed it with MAF cleaner, put it back in, and unplugged battery. I didn't drive the car for a few days after so I know the MAF was dry. When I started the car earlier, the idle was really rough. It would jump back and forth from 500 rpms to 1000 rpms. After the car warmed up the rough idle settled down slightly but was still present- it would jump back and forth from 500 to 800 rpms.

Any ideas what the issue is here? Is this just the ecu adjusting to a cleaner MAF? I had zero idle issues prior to the MAF cleaning.

[Loren]

When you disconnect the battery you are forcing the DME to relearn the idle and acceleration curve for your car. Perfectly normal.

It is better to clear codes with a proper diagnostic tool.

[pk2]

Sometimes if you don't' reassemble things properly with zero air leaks you can get throttle "hunting". I bet Loren is right though. Should he have a check engine light either way though?

Regards, PK

[systech]

I recently cleaned my MAF in hopes of chasing out a 0430 CEL. I took the MAF out, sprayed it with MAF cleaner, put it back in, and unplugged battery. I didn't drive the car for a few days after so I know the MAF was dry. When I started the car earlier, the idle was really rough. It would jump back and forth from 500 rpms to 1000 rpms. After the car warmed up the rough idle settled down slightly but was still present- it would jump back and forth from 500 to 800 rpms.

Any ideas what the issue is here? Is this just the ecu adjusting to a cleaner MAF? I had zero idle issues prior to the MAF cleaning.

What they said.

Could also be the throttle body needs a clean.