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Speedometer stoped working!

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Old 03-10-2004, 11:04 AM
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Default Speedometer stoped working!

Hi again, today I will be picking up my new 92 SSEi and i am very excited about it. But on my old 91 SE the speedometer stoped working all of a sudden. The tachometer works just fine but the arrow just lies down and does not prodecu any movemnet what so ever. A couple more thing, the cruise control work just fine but the milage does not get registered. Anyone has any clue what might be the problem?
Thanks in advance!
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Old 03-10-2004, 11:12 AM
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The speed signal comes from the pcm, I suspect a loose connection from the pcm to speedo. The fact the cruise works indicates the speed sensor to pcm is ok.
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Old 03-10-2004, 11:17 AM
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yeap PCM could be the problem or the back of the cluster
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Old 03-10-2004, 12:53 PM
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Your car isn't happy with the new purchase
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Old 03-10-2004, 12:55 PM
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Instrument cluster removal procedure is in Techinfo.
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Old 03-10-2004, 05:19 PM
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Where is PCM located and how does it look like?
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Old 03-12-2004, 05:43 PM
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Originally Posted by jr's3800
I agree with Pontiac Dad..... I say this because the cruise does have to have a Vehicle speed signal for the cruise to work... But that deosn't mean the ECM isn't bad... But I get the feeling that the Cluster has taken a crash...
I would have expected a Service Engine light if the problem was anywhere other than in the cluster. Given their history of random components in the cluster failing when the connector pins get oxidized, I'd say this is just another case of that.

Take the cluster out, check the connections and stick it back together again, per the instructions in TechInfo. It'll give you an opportunity to do a little cleaning while it'* apart, and I suspect the big fat multi-pin connector plug in the back may be the culprit here anyway.
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