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93dak4x4
Dodge Dakota
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2/02/2005
16:38:02
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 Subject: sensor/guage?
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Message:
hi,
i have been noticing for a little while now that every once in a while my tach just jumps, the motor doesnt change, the tach reading does...do you think this is due to a bad crank sensor? I plan to do the sensor mod with a new sensor anyway, but could it just be the guage?
93 3.9 cc 4x4
V8 tb
Flowmaster 40
3923's
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Budysr
Dodge Dakota
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2/02/2005
18:05:21
| RE: sensor/guage?
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Message:
How much does the tach jump? I have a 93 also and my tach sometimes 'settles' in a lower position(about 300rpm) than what it is really at. I notice this at idle and can usually rev it a few times to get it to catch back in the proper reading. It is the guage for sure on mine. Does yours jump when riding down the road?
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93dak4x4
Dodge Dakota
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2/02/2005
18:29:54
| RE: sensor/guage?
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Message:
i would say it probably can jump between 100-300 rpm
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Budysr
Dodge Dakota
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2/02/2005
19:54:20
| RE: sensor/guage?
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Message:
Well, I'm not a mechanic, but I seriously doubt that you have a problem with the crank sensor. If you did, I'd imagine that your truck would have some serious issues with the way it runs. I have noticed a trend on here with other guys trucks and the tach.s not always being 100% reliable(this goes for all the gauges).
Really sounds like your truck has a 'loose' tach like mine.
All this being said, I did have a similar problem in my 96 accord where the tach would 'dance' around at cruising speeds and jump up alot without any change in engine performance or any aparent rpm change. I thought it was the gauge but as it turns out, it was the coil which was replaced by honda free of charge. Go figure.
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93dak4x4
Dodge Dakota
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2/03/2005
00:09:44
| RE: sensor/guage?
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Message:
well like i said i am changing the crank sensor after my next pay check arrives...but the coil is brand new and i just kinda wondered. figured why not ask the public who knows as much as i do.
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