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My buddy has a 1990 spirit or maybe it's an acclaim,(3.0 liter)but anyhow he says that once in a while when he is driving the dash lights go out and all the gauges "peg out" except the alternator gauge it falls back to nothing.Oh, and both the turn signals stay fully illuminated(but are still operational when using them). This does not cause any performance problem.He says if he hits a big bump it will go back to normal.I haven't got the car to do it yet.But i am leaning toward a ground problem.I checked the grnd. from batt. to block and the grnd. from block to firewall,all ok.It sounds like it's a very isolated problem disturbing only the dash.He hasn't noticed wether it has done it during the day because the lights are not on and it doesen't catch his attention.I figured maybe the headlights might be contributing to the problem but no evidence so far to prove that.I haven't got up into the dash yet to do a wiggle test(figured it might be in the dash).But before i go tearing into it and making more work i figured i would see what you guys think.I definitely would think something is loose given the bump scenario . Thanks!
carl
carl