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Dashboard guage problems


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2 months ago, my 2005 Response LXi gauges (cluster guage, speedo) quit working, although PerfectPass  worked and gave a digital readout of the speed. I have to thank everyone who have previously posted on this topic. There is an inline fuse for PerfectPass computer, but none for the MDC in my boat. I disconnected and reconnected all the wiring harnesses behind dashboard and in engine compartment, jiggled the kill switch, and the gauges worked again, but only for a few days. I resoldered some of the small pins of the 24 pin connector on the MDC (was afraid of doing damage), tightened wiring harnesses, and the gauges worked again briefly. I pressed the kill switch and the engine stopped but would not restart (there seems to be a timer on the restart, for safety?) yet the gauges came on briefly.

I unscrewed the panel of circuit breakers, cleaned the red power cable terminal, replaced the kill switch, cleaned the terminals at the ground copper plate high behind the dashboard on the starboard side, but gauges still didn’t work. I removed MDC again, resoldered more of the small pins (the large pins of the 10 pin connector looked secure), then tightened the harness in engine compartment since it seemed a little loose. This “cannon” plug is actually a rectangular block in my boat on rear starboard side of engine. Now the gauges are working again, and I suspect a bad connection at the “cannon” plug was the real culprit since it is subject to constant engine vibration. I hope this post may guide others in the future.

The oil pressure in the 5 inch cluster guage has not worked for a year, and I was trying to replace the stepper motor. I got the silver bezel off, but the clear plastic lens cover seems super-glued and I cannot get it off. Any advice?

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Before you go too far down that path, is the oil pressure sensor working correctly?  Not sure on yours if the gauge sensor and warning buzzer sensor are separate or off the same pressure switch.  Sorry no ideas on removing the bezel other than a very sharp exacto knife to carefully cut the lens from the gauge panel.

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36 minutes ago, Andy005 said:

I got the silver bezel off, but the clear plastic lens cover seems super-glued and I cannot get it off. Any advice?

Great work on the gauges.  Use a razor saw and cut the lens off right at the glue line.

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On 2/17/2021 at 12:57 PM, Andy005 said:

The oil pressure in the 5 inch cluster guage has not worked for a year, and I was trying to replace the stepper motor. I got the silver bezel off, but the clear plastic lens cover seems super-glued and I cannot get it off. Any advice?

On 2/17/2021 at 1:34 PM, justgary said:

Use a razor saw and cut the lens off right at the glue line.

Ive done the stepper motor on my speedo. I used a razor saw like @justgarysaid to get a groove started, then used a razor blade and slowly worked around the lens lip. It took almost an hour but came off clean and was reused.

 

Good work on the troubleshooting and getting the gauges back. Went through the same thing a couple years ago. Turned out to be the 2 inline fuses under the dash.

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