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1993 BMW 325 Tachometer will not read RPM's (sticky tach)

Tiny
SPIRITOF77
  • MEMBER
  • 1993 BMW 325
Computer problem
1993 BMW 325 6 cyl Two Wheel Drive Automatic 116xxx miles

Hey, my BMW has a tachometer that will not register correct RPS's. It is as if it gets stuck and then when I reach a higher RPM level it jumps to it. If I am going at 2000 rpms, it will show 1000 rpms until 5000 rpms where it will jump to ad stay there till I come back down to 200 rpms.

It might be a stuck spedo cable and need penetrating oil or replacement?
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Tuesday, August 19th, 2008 AT 5:17 AM

5 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
There is no cable, it is all electronic. It may be a mechanical issue or it may be the cluster will need replacement.
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Tuesday, August 19th, 2008 AT 9:12 AM
Tiny
SPIRITOF77
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Oooh, I am used to working on much older cars, so the electronic tach would make things a bit more complicated.

Is there anywhere specific that I should look to take it, or just my local bmw dealership
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Tuesday, August 19th, 2008 AT 11:36 AM
Tiny
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  • MECHANIC
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Look in the Yellow pages for a local speedo/tach shop before you sacrifice your $$$ at the dealer.
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Tuesday, August 19th, 2008 AT 2:22 PM
Tiny
DOCHAGERTY
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Look in the Yellow pages for a local speedo/tach shop before you sacrifice your $$$ at the dealer. Or call 619-444-2290 and talk to John and or Sean @ Autobahn Dismantling.
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Tuesday, August 19th, 2008 AT 2:22 PM
Tiny
SPIRITOF77
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Thank you very much, I am going to look at several local places in orange county
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Thursday, August 21st, 2008 AT 11:24 PM

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