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  #1  
Old 05-14-2004, 07:59 PM
KirkVining's Avatar
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Erratic guages on 107

While stopped a stop light at idle, all of a sudden my gas/temp/oil guage needles started jumping around all over the place. I hit the gas, and it stopped. Hasn't done it since. Anybody every seen that and know the cause? Are the guages electrically or vacuum operated? Thanks

Kirk
1983 280 SL

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  #2  
Old 05-15-2004, 10:20 PM
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I have a 1984 380SL and I have noticed that the temp. gauge will sometimes rise quickly while idling at a stop light from about the usual 80 degree position to up to about 100 degrees but will quickly sort itself out once I pull away from the light.

Also, after driving for a while the oil gauge will drop to say "2" at idle speed but will immediately return to the usual "4" position when driving again.
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1984 380SL (58,000 miles)
Anthracite on grey
1997 BMW 540i
Alpine Silver on Burgundy
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  #3  
Old 05-17-2004, 01:59 AM
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Yes, I think that is pretty normal. This was an erratic and crazed movement of all the needles,
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Old 05-18-2004, 08:38 AM
PeteO
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I had the same issue right before the alternator went out. Check the battery voltage at a idle should be above 12 Volts DC and around 14 at higher RPM
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Old 05-18-2004, 09:26 PM
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Before you do too much -- change the fuse. I do not know why whith the gauges but I have had this very problem a few times and it was the fuse.

It is a good idea to change all the fuses -- MB says 10years for the type in the 107.

I have always thought that the fuses MB used are junk -- nothing but problems. They should have changed to the more modern units back in the 60's.

You need to also clean off the terminals -- not too much -- just get them clean and fit the new fuse - move it a little bit to seat it.
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Old 05-19-2004, 01:22 AM
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Ok, I'll check of all those. You guys are great, I would have never in a million years thought of either one of these situations.

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