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Old 10-12-2004, 10:03 AM
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Join Date: Aug 2002
Posts: 133
Transmission Problems

1991 500 SL 125 KM

Hey folks.

While driving today my beast didn't want to shift into drive but rather wanted to stay in third. At times, it wanted to stay in second unless I kicked down the accelerator hard or was driving softly.

Mechanically, the transmission seems to be working fine when it shifts so I'm thinking it is a vaccum or electrical issue. Tends to work fine when cold early in the day and degrades from there.

Had similar problems a few weeks ago, found the fluid low and that seemed to fix the problem. Now it is back but the fluid appears fine. Do appear to have a very minor leak near the front left.

Certainly hoping to not have to rebuild a tranny.

Thanks in advance and remember....I just drive 'em, I don't know how they work.
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Old 10-13-2004, 11:56 PM
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Join Date: Jul 2000
Posts: 638
funky tranny faults

get it serviced and checked. Description sounds like low oil pressure--could be plugged filter, worn/failing oil pump, leaking seals, leaking valve body,etc.
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Old 10-14-2004, 12:05 AM
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Join Date: Aug 2002
Posts: 133
It went in on Tuesday. I was thinking filter or vac. modulator and crossing my fingers.

I'll report....
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Old 10-14-2004, 04:39 PM
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Join Date: Aug 2002
Posts: 133
The good news is that the filter was partially blocked causing my problems.

The bad is that it is likely only a matter of time until the tranny melts down.
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