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Re: Transmission advice (archive)

[ Follow Ups ] [ 8-series (E31) Message Board ] [ Msg. Board FAQ ]

Posted by Steve on June 16, 2000 at 10:34:17:

In Reply to: Re: Transmission advice posted by Stan on June 16, 2000 at 09:09:30:

: Your OBC probably read out "TRANS FAILSAFE PROG", which is the 'limp-home' feature when something goes wrong. What happens is the trans will shift to 3rd and stay there, when there is a system error (just take it easy and drive slowly and carefully, these wonderful machines will get you home).

: That said, it may not be your transmission at all. I had the same problem (and it was intermittent) and it was a cam-shaft position sensor. Justin recently went through this as well and I believe it was an engine sensor as well, although he did find a faulty electromotive clutch later. The reason for this is that the electronics are so integrated in the car, a failure in a sensor can trigger a cascade of error-faults and lead to a read-out of something like the transmission fail-safe. Have your mechanic look carefully at the fault code readout and chances are that there are a few codes prior to the transmission code. Check items starting with the primary fault code first, and work down the list. If the primary fault is a transmission one, you may have a tranny problem, but it doesn't sound like it. But take heart, chances are that it's in an engine sensor and should be easy to repair.

: Calm your wife's fears, these cars ARE reliable, as long as you take care of them, give them regular maintenance, and lot's of love.

: Stan C.
: '92 850iA
: Bay Area 8's

Stan, thanks for a 'nerve calming' response ;-)

The car has a full main dealer history and just had Inspection I so I believe it to have been looked after reasonably well. I even spoke to the dealer who has serviced the car for the last few years and they were happy with the condition and maintenance. In addition I am an anal retentive when it comes to looking after my BMW's so there is no danger things will slide ;-)

I take your point that a sensor fault is likely but you just never know when an auto transmission is going to give up the will to live! Fingers crossed...................


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