Originally Posted by
reiji
I have no codes at the moment. When I took it to the shop 2 weeks ago they must have cleared it, but I have no CEL now.
I ordered one of those Bluetooth OBDII dongles, so I can use my android phone as a code reader. I wanted to use that to watch the TPS. I'm thinking that would tell me if the throttle is actually moving or if something else is causing the surging (like a leak). Is my logic on that correct?
When I had this problem I watched the TPS % with my ultra gauge, it was surging with the idle. I believe the computer was seeing something it did not like, and was compensating for it. Yours will most likely see the same thing. Every once in a while everything would run right and not surge at all, on those days I always got a CEL for running lean. I know how frustrating this problem is, I know I was ready to sell my car. Hopefully your car will fix it self soon like the rest of ours have.