The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Check voltage...(more) (archive)

[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]

Posted by LarryChew on August 03, 2001 at 00:11:08:

In Reply to: Need some help with auto trans problems posted by R Kieffer on August 02, 2001 at 19:19:17:

I have a 1992 525i and 2 years ago I experienced trans error code and the auto going into the "fail-safe limp home in 3rd gear mode".

Tough diagnosis - finally found it was a bad regulator putting out too many volts. The transmission electronics likes the correct voltage - and clean power. Switched the Valeo alternator/regulator unit for a Bosch unit for cleaner power (less "noise" than Valeo). No problems since.


Follow Ups:



[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2017 Jump Internet Inc. All rights reserved.