Z Series BMW z3 2000, EML and traction control light, poor running


The BMW Z models are a line of roadsters manufactured by German automaker BMW. The Z stands for Zukunft (German for future), and has been produced in four different series with six generations consisting of roadster, coupé, sports car, and concept variants. The introduction of the M Coupé and M Roadster in the Z3 line marked the first of the Z series to have a high-performance BMW M variant. The first generation Z4 also continued to offer M Coupé and M Roadster variants. The current Z4 (G29) uses BMW's (B58B30) inline-six, its platform is the basis for the current Toyota Supra.

Chopperscoot

Autobahn Newbie
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Name
Phill
After leaving my Z3 6 cylinder N52 parked up for a whole, I started it fine but as soon as I accelerated to pull away the engine misses and runs poorly. The EML and traction control light came on. After looking at it myself, the code came up “throttle body switched off”. I have also taken it to 2 BMW specialists which I’ve paid for and their diagnosis was change the throttle body and change the idle control valve - which has been done. I have also since tried these parts on another like for like and they work fine.
I’ve done a smoke test for leaks and all good
The cost does clear when I use my Snap on or do the ignition key factory reset procedure. The car idles perfectly but as soon as I touch the accelerator it spluttering and spitting and the EML and traction control lights illuminate.
It’s driving me crazy! any advice or help would be much Ltd appreciated. I’m now into £ hundreds and getting nowhere. Thanks so much in advance.
 
After leaving my Z3 6 cylinder N52 parked up for a whole, I started it fine but as soon as I accelerated to pull away the engine misses and runs poorly. The EML and traction control light came on. After looking at it myself, the code came up “throttle body switched off”. I have also taken it to 2 BMW specialists which I’ve paid for and their diagnosis was change the throttle body and change the idle control valve - which has been done. I have also since tried these parts on another like for like and they work fine.
I’ve done a smoke test for leaks and all good
The cost does clear when I use my Snap on or do the ignition key factory reset procedure. The car idles perfectly but as soon as I touch the accelerator it spluttering and spitting and the EML and traction control lights illuminate.
It’s driving me crazy! any advice or help would be much Ltd appreciated. I’m now into £ hundreds and getting nowhere. Thanks so much in advance.
I have same problem on mine after diagnostic mechanic wants to change throttle body and I am not convinced, did you manage to sort out?
 

BMW

Bayerische Motoren Werke AG, abbreviated as BMW is a German multinational manufacturer of luxury vehicles and motorcycles headquartered in Munich, Bavaria, Germany. The company was founded in 1916 as a manufacturer of aircraft engines, which it produced from 1917 to 1918 and again from 1933 to 1945.
Official website: BMW (Global), BMW (USA)

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