Today I reset the TPS sensor because the car was hesitating and bucking. After I reset it the car ran great, about 5 minutes into the drive the car started acting up again like the tps sensor reset itself. These symptoms are very spontaneous though, sometimes it runs but hesitates and sometimes when I go into boost at all the car will cut out completely. For some reason I had the idea of turning the key off while driving and turning it back on to reset the ecu. I know it doesn't completely reset it but it definately does something. So when I turn the key off then back on the car runs great and does not hesitate at all. Has anyone tried this before?

 

that sounds exactly like my problem... exept i thought my car stalled so while still rolling i turned the key forward and it cleared up , but comes back almost exactly 30 seconds later ... i think it may have something to do with the cold start assist or something related that causes it to go away for the 30 second period . but thats all ive figured out so far if i get mine right i will post what fixed it please keep me posted

 

With your series five it sounds more like the electric omp has gone **** up and the ECU is going into a default/limp mode. So. Check your CODES to see if you have a OMP fault.

Or search this site for LIMP MODE.

 

well mines fixed .. it was a stuck tps , it metered fine untill i worked the throttle a few times then it stuck all the way in .. dont know if that helps .. by the way this is on an 88 se auto ..

 

just take out ur tps and clean the **** outta it, just get some electrical contact cleaner and spray it down, and wipe off all grease and etc.