This is doing my head in

Electrics all cleared.

Output Speed Sensor replaced, ECU Updated all Wiring and Electrics not causing any problems.

Do you think its the transmission again? Can a new transmission be faulty?

If anyone has any information that can help me it would be greatly appreciated.

Symptons:

Only when Drive is engaged, and foot is on the brake (sat at the lights, or junction). Doesn't matter if the car is warmed up or cold, wait between 10 & 60 seconds, then Limp mode kicks in. I have to restart the car and code disappears or! if I shift in Neutral error doesn't appear.

Seems to be random now! usually within the first 10 minutes of driving.

Code P0721 - Engineer said: "Idle Stall Speed"

 

Hello, I have exactly the same problem. My car was e46 m54 2.2 caropka. I installed gm 5hp19 and after that I couldn't solve the problem. Maybe you can help me at a traffic light or in a traffic jam. My caropka goes into emergency mode.

 

Hey Newboy78,
It looks like you had some bad Transmissions Shops experiences. It can be a real headache to get to the root of the problem with a Used Transmission For Sale sometimes and specially when even the mechanics are not sure...

 

a good advert for auto's....

 

Final Update! Its Fixed, one year on

Well what a journey this has been, and at the end I do not trust BMW Official Repair Centre (Woods of Bournemouth) and the majority of garages in the Bournemouth & Poole area, except Motech on Nuffield Industrial Estate (They are awesome and very helpful)

Its taken over a year to fix the problem, but I now have certification in Automotive Electronics and have also acquired INPA, DIS & SSS to troubleshoot my own errors.

After diagnosing the problem myself it turned out that when the transmission was replaced, the engineer did not clear the current codes and reset throttle adaptions values and transmission adaptions. After I completed this myself, no more issues have occured

I have also completed extensive research in understanding Elecro-Magnetic Interferance cause and effects and also about the Security Bulletin from BMW for EMI interference, and my results indicate a fob off because they didn't understand the problem in the first place (unless you have installed aftermarket equipment and did not ground it properly!!).

I am willing to help anyone out with clearing faults and resetting of adaption values and providing diagnostic readouts if you want, but at your own risk as I am employed as I.T Director, not at a garage as an electrical specialist. Although you would need to come to me for the service. So, post a message and I will get in contact with you via email if you want.

 

Hello, my car has the same problem as you had, can you please help me? I have a big request. My car is a BMW E46, 1999, M54 B2.2, transmission 5HP19, my name is Meli. samxara7778@gmail.com

 

Newboy, Sounds like you've had a nightmare! I recently bought a 330i and I have regular 'warning' issues! I bought a code reader to help with these. 'Apparently' the guy I bought the car from had the steering rack replaced, by a BMW mechanic, and then the airbag light came on. I tried resetting it, but it tells me I have an open circuit. I replaced the slip ring as the steering wheel controls never worked and though this could be part of the issue, controls now work, light still on! I can live with that while I get it looked at by an electrician.

My biggest issue is the speedo. It reads wrong all of the time, doesn't go below 20, then stuck under 50 and now back to no lower than 20 again! If I do the self diagnostic thing by holding the dash button in then the speedo goes all the way round and past the speedo face. Doesn't look smooth. Should I replace the speedo first and then look at the speed sensor, once I work out which one it is!

I have no abs light, limp mode or dsc light as per other posts.

Cheers guys, thanks for a great site.

Chris

 

I bought a code reader to help with these.

witch one did you get proper bmw or generic

 

Had same problem changed my battery reset codes and now car runs like a dream before spending money on new gearbox try changing the battery. It might be strong enough to start the car but it would not support other components as voltage is low hopes this helps.

 

merhaba uzun zamandir sizin bu formda paylastiginiz sıkıntıyı yasıyorum. Cozumunu bir turlu bulamiyorlar. Arac drive konumunda ayak frende beklerken korumaya aliyor. Sanziman revizyonu yaptırdık duzelmedi. Halen ayni sikinti devam ediyor. Sanziman beynini sıfırlayıp boğaz kelebeğini adaptasyon yapınca mi aracınız düzeldi. Yardimci olursaniz cok sevinirim. Aracim 2003 e46 3.25i

 

Hello, I have the same problem. Did you solve the problem? Maybe you can help me too.

 

Google didn't translate for me ???.

 

hello, for a long time I have been experiencing the problem that you have shared in this form. They can't find a solution somehow. In the drive position, the vehicle protects the foot while waiting on the brake. We had a gearbox revision and it didn't get better. The same problem still continues. Did your vehicle get better after resetting the transmission's brain and adapting the throttle body? I would be glad if you help. My car is 2003 e46 3.25i

 

Hello, I have the same problem. Did you solve the problem? Maybe you can help me too.

 

გამარჯობა

 

გამარჯობა Hello.
Might be worth starting your own new thread with all details.

 

Hello, my car has the same problem as you had, can you please help me? I have a big request. My car is a BMW E46, 1999, M54 B2.2, transmission 5HP19, my name is Meli. samxara7778@gmail.com