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Gauge Cluster Broken?


Galant VR-4 org Post #: 1245128 posted 01/17/19 06:58 AM     Remind Me!  Send Private Message   Edit Post      
So recently I have been having this intermittent problem with the cluster. So sometimes the fuel gauge goes way past full and the temperature gauge goes to 1/4 of the way. I have attempted to attach a photo. This photo is when the car is completely COLD. Also the door light in the cluster doesn't work unless you hit the cluster a few times. I notice as well that when hitting the cluster, the temperature goes up, but the car isnt even on. Is my cluster broken or is there another issue like grounding??
This issue only happens every once in a while but it still annoying.
Please help and thanks in advanced.

1991 galant vr4

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I ain't no puny human

Galant VR-4 org Post #: 1245130 posted 01/17/19 07:13 AM     Remind Me!  Send Private Message   Edit Post      
The clusters have wires that run along the outside of the motherboard. Pull the cluster and verify they aren't rubbing on anything or shorting.

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iceman69510 Galant Moderator
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Galant VR-4 org Post #: 1245131 posted 01/17/19 07:39 AM     Remind Me!  Send Private Message   Edit Post      
Or if any are loose, broken or corroded.

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Galant VR-4 org Post #: 1245227 posted 01/28/19 06:10 AM     Remind Me!  Send Private Message   Edit Post      
So i pull the cluster and inspected those wires you were talking about and all the wires were intact. Still the problem occurs. Only occasionally. Just went to fill the car up and the gauges were fine but i when i started the car yesterday it was once again broken. Please help

1991 galant vr4

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FlyingEagle Galant Moderator
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Galant VR-4 org Post #: 1245468 posted 03/01/19 08:58 AM     Remind Me!  Send Private Message   Edit Post   
If you are having heat related issues, you likely have a connection that is on the verge of good/bad.

There are FSM gauge cluster testing procedures that take you thought checking each function of the cluster, but I suspect if everything works and then all of a sudden, doesn't, then you are looking at something like a ground or power trace being cracked/loose.

There are screw heads on the back of the cluster, and they indicate which function they have, as they are part way into the cluster from the main connector to the gauges themselves. I bet you have a trace that is fractured, and most likely down near the main cluster connection point.

Pull the cluster and look for micro fracture in the plastic/metal traces near that point. Otherwise, it is possible that there are loose screws, or a trace could be broken/loose just about anywhere else in the pad.

I had a buddy at work never get tach operation back on his toyota 95-2000 electronics and it has the same plastic board/metal trace on the back of those yazaki meters.

Let us know what you find. If there are any common grounds, this could be why things are on the fritz. Gauge clusters are proprietary wiring according to some in the cluster repair business, so there is no internal wire diagram but you can critique each gauge regardless.

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