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I have purchased 3 instrument clusters and have.

Tiny
REEVES1
  • MEMBER
  • 1997 BMW 740
  • 18,200 MILES
I have purchased 3 instrument clusters and have had basically the same issue with them.
1. When installed, the temperature gauge does not work but goes all the way to overheating.
2. The traction light comes on.
3. The RPM guage does not work.

What could be the problem?
Should the connection placement match as well?
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Saturday, October 27th, 2012 AT 2:31 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Your sender unit may be your issue with the temp gauge.

Trac light indicates a problem that needs to be checked.

The tach may be a bad signal from the pcm.

Get it checked by a shop to verify

Roy
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Saturday, October 27th, 2012 AT 2:34 PM
Tiny
REEVES1
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No. The reason I am replacing the cluster is the readable display is pixelated
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Saturday, October 27th, 2012 AT 2:37 PM
Tiny
RIVERMIKERAT
  • MECHANIC
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Have it scanned for codes. That'll answer the trac question.

If the temp gauge in multiple displays is reading hot, either the engine is overheating, the sensor is bad, or the PCM is giving or getting bad signals.

Check the connections in the tach circuit.
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Wednesday, October 31st, 2012 AT 11:33 PM
Tiny
DOCHAGERTY
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Volvo? I see this posted in BMW land
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Thursday, November 1st, 2012 AT 3:12 PM
Tiny
RIVERMIKERAT
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Doc, it seems to be a BMW 740. At least that's all I see.
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Thursday, November 1st, 2012 AT 3:14 PM

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