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Cluster gauges dying 1 by 1, or....? 700 1990

posted by  Will740turbo on  Wed Sep 11 22:41 CST 2013
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last visit: Wed Oct 22 16:09 CST 2014
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Hey everybody. I've got a 90 740T with 297K miles on it (woot woot!).

About 5 years ago, the fuel gauge kept sticking and finally died (but tests good with a 68-ohm resistor), then about 3 years ago, the temp gauge started twitching and reading erratically like its voltage regulator is failed. A few days ago, I got in the car, started it up, and the voltmeter stayed pegged as though the car was off until I gave the hood built into the dash over cluster a nice whack.

For a while, that whack would get the temp gauge to work properly. I never tried it with the fuel gauge.


Do 740 clusters die? Why? Could this be related to something else? I honestly haven't had it screwed in for months because of the temp gauge and my attempts at diagnosing it or seeing if I can replace it.

I want to get a calibrated real-time temp gauge to replace the failed one at any rate. Does anybody know of one that would fit in the cluster that gives an actual temp readout either analog or digital?

Cheers






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New Cluster gauges dying 1 by 1, or....? [700][1990]
posted by  Will740turbo subscriber  on Wed Sep 11 22:41 CST 2013 >


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