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  #1  
Old 08-25-2010, 12:46 PM
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Location: East Tennessee
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Tachometer jumpy after rheostat jumper

I finally got around to jumpering my rheostat. All dash lights now work. Now my tach bottoms out to zero when I let off the accelerator. When I push the accelerator, the tachometer works as it should.

When I bought the car the tach did not work at all. I put a cigarette butt in the tach amp which fixed. It does jump around on rainy days for some reason but for the most part it was working great 98% of the time.

I rechecked all connections also.

I do have a tach amp from a 1982 300SD. Will it work in my 300D/
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Old 08-25-2010, 01:25 PM
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mmmmmm Diesel...
 
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Location: Royse City Tx
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How are the grounding connections?
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Old 08-25-2010, 01:36 PM
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The grounds on the steering column all look good.
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Old 08-25-2010, 01:38 PM
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Quote:
Originally Posted by toddyvol View Post
I finally got around to jumpering my rheostat. All dash lights now work. Now my tach bottoms out to zero when I let off the accelerator. When I push the accelerator, the tachometer works as it should.

When I bought the car the tach did not work at all. I put a cigarette butt in the tach amp which fixed. It does jump around on rainy days for some reason but for the most part it was working great 98% of the time.

I rechecked all connections also.

I do have a tach amp from a 1982 300SD. Will it work in my 300D/
If the SD's tach amp look the same, it should work in the 300D if it's good.
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