Rpm gauge stop working - Dodge Cummins Diesel Forum

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post #1 of 7 (permalink) Old 03-29-2011, 02:27 PM Thread Starter
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Rpm gauge stop working

The morning I'm driving my truck to work all of the sudden my check light comes on and my rpm gauge isn't working but speedo is. The rpm gauge started working about a min or two after that.My superchip said there was nothing wrong go figure. I've started the truck up a few more times since then and everything is working just fine. Any help would be great


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post #2 of 7 (permalink) Old 03-29-2011, 02:36 PM
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Originally Posted by 1slowdodge View Post
The morning I'm driving my truck to work all of the sudden my check light comes on and my rpm gauge isn't working but speedo is. The rpm gauge started working about a min or two after that.My superchip said there was nothing wrong go figure. I've started the truck up a few more times since then and everything is working just fine. Any help would be great
did you do the key trick and did your brake lights go off as well??

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2000 Dodge ram 2500 5spd, Airdog 150, 2wd with 353300 miles, 90hp injectors, and triple gauge pillar pod
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post #3 of 7 (permalink) Old 03-29-2011, 02:43 PM Thread Starter
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didn't do the key trick didn't that work on the trucks. And I'm not sure about the brake lights going off. This has happen before but I just chalk it up to the superchip tuner

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post #4 of 7 (permalink) Old 03-29-2011, 03:08 PM
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didn't do the key trick didn't that work on the trucks. And I'm not sure about the brake lights going off. This has happen before but I just chalk it up to the superchip tuner
i mean the abs light on the dash and brake light on dash...also the key trick does work but who knows if it pull a code or not.

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post #5 of 7 (permalink) Old 03-29-2011, 03:10 PM Thread Starter
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all those were off but the check engine light

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post #6 of 7 (permalink) Old 03-29-2011, 06:37 PM
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since you got a 99 im 99% sure its gonna be your crank sensor but you gotta pull that code to know for sure

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post #7 of 7 (permalink) Old 03-29-2011, 07:38 PM
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Just replaced my crankshaft sensor today - and that is what happened to mine, the RPM would come and go randomly... pulling the codes on mine showed that it was the crankshaft sensor, don't remember the code.

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