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Pontiac Forum: Gauges work intermittently
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  #1  
Old November 18th, 2018, 11:03 AM
Phil Number 3 Phil Number 3 is offline
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Gauges work intermittently

My speedometer, engine temp gauge, oil pressure and alt light quit one day. I searched and found a relay that I thought was the problem. I exchanged it and everything worked ... for a while.
Later I discovered that when cold, everything works but when the cabin is warm, especially the foot are, the gauges quit then when cold, start working again.

Anyone have a clue ? I've checked connections and fuses and everything looks fine so I am at a loss. I did find a small box behind the dash with a wheel adjustment but I have NO idea what it is or does.
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Old November 18th, 2018, 07:40 PM
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could be a bad circuit board in the cluster.
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Old November 19th, 2018, 08:12 PM
Phil Number 3 Phil Number 3 is offline
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I'm afraid you might be right.
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Old November 20th, 2018, 01:44 PM
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I would check the grounds 1st, a bad ground can cause all kinds of strange issues.

But it could also be the board, or a loose connection.
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Old November 22nd, 2018, 02:20 PM
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92 Sunbird LE 92 Sunbird LE is offline
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The instrument cluster snaps into a electrical port with all the metal fingers exposed, they can get coroaded after time and make no good connection. The cluster will have to come out to check this, have fun with all the screws and plastic trim you have to remove to take it out....


Doug in P.R.
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Old November 22nd, 2018, 02:25 PM
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92 Sunbird LE 92 Sunbird LE is offline
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The instrument cluster snaps into a electrical port with all the metal fingers exposed, they can get coroaded after time and make no good connection. The cluster will have to come out to check this, have fun with all the screws and plastic trim you have to move to take it out....


Doug in P.R.
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Old November 24th, 2018, 11:23 AM
pippo pippo is offline
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Quote:
Originally Posted by 92 Sunbird LE View Post
The instrument cluster snaps into a electrical port with all the metal fingers exposed, they can get coroaded after time and make no good connection. The cluster will have to come out to check this, have fun with all the screws and plastic trim you have to move to take it out....


Doug in P.R.
Right, Doug, but I have done this many times and it is not so difficult. tedious a bit, but overall easy. I had to replace tiny plastic sprocket wheels which were broken , driving the odometer.

Anyway, easy project.
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Old November 26th, 2018, 09:14 AM
Phil Number 3 Phil Number 3 is offline
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Thanks for the updates. I'm in the middle of removing it all. Finding all of the screws seems to be the challenge
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