I’ve had similiar trouble on the 08 4.8i before and checked the wiring harness, tested another thorttle body, chnaged the gas paddle and it ended up being the battery. However now the battery is holding charge fine. Here are the nuts symptoms: Car started going into limp mode but no errors, simply i mashed the paddle and the car would not accelerate, had to turn it on/off and it would be a while till the car went into limp mode, still no errors. This sometiems did and sometimes didn’t happen. These days it went in limp mode and i got the 4x4 malfunction and various warnings, cruise control malfunction etc. Today the really nuts behavior re-accured: the car started bucking forward, without me giving it gas, it stalled, the rpms kept going up and down and i could barely drive it. Left it sit and the car started back up no issues, last time i checked here are the codes: 2CF8 throttle potentiometer, 2CF9 throttle potentiometer 2, 2CFA throttle potentiometer 3, 2D32 differential pressure sensor plausibilty error. These come up when the engine malfunction light comes up. It probably had more codes but they got erased as the car has been from shop to shop and they’ve got no clues including the BMW dealer. They’re advising i try changing the throttle body. Any ideas ?
Here is a video of it going into limp mode without any warning, and after a turn off/on:
https://youtu.be/DLWsDDoCulg
08-29-2017, 10:07 AM
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