[phrezy]

Just started to see that that my idle has a slight bounce to it the past few days. It's more noticeable in park than drive. At park it will jump from 600-1000rpms and drive is about 300-500rpms. Now sometimes it will be fine after driven for a while. When braking it will drop from 800 down to 300 than bounce back up ever time and rest at 500, now I never really looked to see if that's normal or not so any help would be great to clear things up. I'm thinking it might be the new houses I put on my TB a few weeks ago that need to be tightened a little do to the weather but what else could cause this if that is not the case.

 

[jzack]

TPS starting get go - noisy spots on the part's sensor pad. It works the same way electrically as the volume control knob of an older TV or radio. When they go bad you'd hear some static as the knob was turned. Same issue with the Z but in this case the idle bounces....

Just one thing it could be....