Help with MDK... - BMW Forum

jkloese · 06-07-2004, 09:23 AM

Well I was haveing a ton of problems, MDK fault codes kept coming up and I had to restart my engine multiple times each time I drove my 2000 323i. Well BMW said it was my throttle body, so I replaced it and cleared the faults. Worked great for a week. Now Im getting faults 75 "pedal sensor(PWG) potentiometer plausibilty" and A9"Motorized Throttle (MDK) final stage failure" when it happens my DSC, EML and check engine lights all come on. It happens a couple times a day now, I have to wait alittle while and restart my engine and it runs fine. If anyone has any info on this it would help.

jkloese · 06-08-2004, 08:37 AM

Well I guess nobody has any idea what this is...so Ill just bring it in to the shop and pay $100 per hour to tell me what is wrong...ill report back next week.

jkloese · 06-08-2004, 09:43 AM

Thanks Gargoyle69 for the support. This is the first time I posted to the site, but I have found alot of valuable info on here. BMW did tell me they checked the computer and about a year ago they reprogrammed it. But you never know, its trial and error right now...unfortunately its been more error.

Gargoyle69 · 06-08-2004, 09:51 AM

There is a big problem with computers though, one day it will check out fine and the next it will be all screwy. If they had to reprogram it once there is a good chance they will have to do it again. Stupid Computers.

jkloese · 06-14-2004, 09:48 AM

Well I sais once I went to the dealer I would report back. So in case this ever deos happen to anyone, hopefully this is helpful. My appointment was on Saturday, but on friday I was stuck at a gas station with this reocurring problem. The car would start and idle fine, and even if i slowly pressed the pedal it would rev fine. But if I quickly floored it, all the lights came on and the pedal was worthless. Well I popped the hood and started to adjust the throttle cable. I spent about 2 hours tweaking it and finely I was able to get it right and no problems. I cleared the computer and went home. Saturday morning I took it in to have everything checked. $107 later they found that the throttle was adjusted perfectly and it was running fine. The tech did clear out some errors that were I guess "deeper" in the system then my tool would reset. He said that could cause the problem. Its now Monday and everything is fine so far. Hope it stays that way. Its only been about 8 months since my car has run right.

jkloese · 06-22-2004, 03:48 PM

Well guess what, problem is back. I went to the dealership yesterday, now they believe its the wireing harness in my engine compartment thats bad. They want $1200 to replace it, but the part is only $360. If anyone has ever replaced a wireing harness let me know how bad it was. If nobody has...ill you know how bad it was!