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 Intermittent Instrument Panel Operation

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CrusinDan
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Name : Dan Shields
Location : Central Florida
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PostSubject: Intermittent Instrument Panel Operation   Tue Feb 06, 2018 3:06 pm

The instrument panel (Gauges, odometer, tach) works sometimes but will go dark and then come back on. This is on Jim's 1995 that has been stored in the garage for a while. I am thinking it is likely either a loose connection in the power supply, or a bad ground, but is there someplace in particular that I should check first?

Thanks,
Dan
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albertj
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PostSubject: Re: Intermittent Instrument Panel Operation   Tue Feb 06, 2018 5:44 pm

You can get to the backs of the gauges by removing the trim off the face of the instrument cluster. Some people can remove the lower dash trim and reach up into the mess of wires, if their hands/arms are slender enough. If going in from the top, also you may want to remove the steering wheel clamshell but be careful not to break the bosses.

I am thinking rodent damage, maybe.

Thinking about it more, it would be a *real* good idea for you to get a factory service manual.

Albertj
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CrusinDan
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Name : Dan Shields
Location : Central Florida
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PostSubject: Re: Intermittent Instrument Panel Operation   Tue Feb 06, 2018 5:57 pm

Albert,

Thanks for the quick reply and guidance, on this and the wiper issue. I'll take a look next time I can get over to where the car is. Haven't seen any evidence of rodents, but now I know how to get access.

Dan
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CrusinDan
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Name : Dan Shields
Location : Central Florida
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Merit : 2

PostSubject: Update   Sun Feb 11, 2018 1:49 pm

Visited the Riviera yesterday. Saw no evidence of rodent damage or other wiring issues behind the dash. I could not figure out how to remove any of the dashboard trim panels and didn't want to break any plastic tabs, but I got a good look from underneath. Since the instrument panel issue has been intermittent, I tried wiggling all the fuses, relays, etc. while someone watched the instrument panel.  All the gauges and OD came back on and stayed on when I wiggled one of the fuse/relay panels up in the right front corner of the engine compartment. So it looks like we had a dirty contact there.

Dan
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albertj
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PostSubject: Re: Intermittent Instrument Panel Operation   Sun Feb 11, 2018 4:01 pm

CrusinDan wrote:
Visited the Riviera yesterday. Saw no evidence of rodent damage or other wiring issues behind the dash. I could not figure out how to remove any of the dashboard trim panels and didn't want to break any plastic tabs, but I got a good look from underneath. Since the instrument panel issue has been intermittent, I tried wiggling all the fuses, relays, etc. while someone watched the instrument panel.  All the gauges and OD came back on and stayed on when I wiggled one of the fuse/relay panels up in the right front corner of the engine compartment. So it looks like we had a dirty contact there.

Dan

I wish I'd thought of that.

It would not be a waste of time to pull that fuse/relay pod and reattach it/its relays with conductive greas or tuneup grease on the contacts, so it does not hassle you by surprise.

Great there's no apparent rodent damage.

To get to the dash - best is to get a facroty service manual however in general you push the pins in the retainers of a black cover panel that is hidden under the padded dash overhang. he panel will pull down pretty easy once those pins are disengaged. Then you remove teh plastic panels (noe is a fuse box over) from the side ends of the dash. hen you remove the screws that you found uder tht black plastic panel as well as on the side ends of the dash under those covers. install is revers of removal but do not undertorque (squeaks) or overtorque (breakage) the screws. consider putting elecricians tape or silicone tape on the holes where te screw heads land, torquing with a torque wrench/screwdeuver bit, and using blue loctite so the screws stay torqued. Then you get no phantom squeeks.

Albert
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