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1997 BMW 528 97 528i RPM's running high after transmission

Tiny
TX528I
  • MEMBER
  • 1997 BMW 528
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I recently had my transmission rebuilt and now the RPM's seem to be running a lot higher than before. For example, at 70 MPH, the RPM's are around 2700-2800. If memory serves me correctly, before they were down around 2000 to 2100. Does the computer need to be reconfigured or reset to reflect the rebuild? Also, the neutral safety switch was replaced during the rebuild.
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Monday, August 16th, 2010 AT 9:34 AM

5 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Rebuilt transmissions for that car can be bothersome in as much as the matching of the control module to the tranny. Is the warning indicator illuminated? It sounds like the TCC might not be locking up at speed.
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Tuesday, August 17th, 2010 AT 9:23 AM
Tiny
TX528I
  • MEMBER
  • 3 POSTS
No, there is no warning indicator light illuminated. Other than running at the higher RPM's, the car seems to be driving normally. I am just concerned about the wear on the engine and poor gas mileage.
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Wednesday, August 18th, 2010 AT 3:47 PM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Where did you get the rebuild done?
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Wednesday, August 18th, 2010 AT 6:40 PM
Tiny
TX528I
  • MEMBER
  • 3 POSTS
A local shop that specializes in transmission rebuilds. Couldn't afford the dealership for a 97 with 200,000 miles on it.
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Thursday, August 19th, 2010 AT 8:50 AM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
First thing I would do is go to the rebuilder and express your concerns. They should be willing to address this issue straightaway.
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Thursday, August 19th, 2010 AT 9:08 AM

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