Recently (past month) my GLX has been histating when I go to accelerate (intermittenly) as well when I idle my rpms tend to bounce around from 400 to 2k (intermitten as well). I had my codes read and there were as follows p0103, p0172 and p0120.
To tell you what I've done so far (because I already did a search and read the posts for all 3 codes, so please don't reply with "try the search, that's what it's there for", because I did)
1.)Plugs were changed approx. 2-3k miles ago
2.)Wires are approx. 50k miles old
3.)I cleaned my K&N
4.)I cleaned my MAF with electrical cleaner as well as all of the intake tubing
5.)I removed and cleaned my throttle body with carb cleaner
6.)I checked and secured all vaccuum lines
Any help on the matter would be greatly appreciated, I'm tired of my car going crazy at idle and conking out while I'm driving and drinking coffee. Plus I love my Rita and she is not happy at the moment.