I have a 2002 330CI convertible. M54 engine series. Manual.
This car does not have a cable for the throttle. Drive by wire.
Start car, no SEL lights or diagnostics.
With car in neutral or in gear, clutch pressed or not, I can rev the engine, good response. idle is also good.
The moment I press the brake pedal, the accelerator no longer revs the engine.
Short background. Car ran well before this. I replaced the air filter. Changed the oil. I did disconnect the MAF while replacing the air filter. But was very sure to reconnect it. However I did not disconnect the battery.
When this happened the first time I did get the DSC light to come on. Was backing up on a slight incline.
To make this go away I restart the car, the gas pedal revs the engine well.
the moment I hit the brake pedal it disable the gas pedal.
I need some help. Thank You Lucas330CI
Also wanted to add that once the brake pedal is pressed the engines stays in perfect idle. around 750 rpm ( approx)
I have tried disconnected the battery for several minutes and reconnected.