Is it common onthe dakotas for the tach. to be off. Mine says that it is idling at 100-200 rpms and i know its not, it also bounces off 5,000 on the revlimiter, so i just wanted to see if mabey i was turning out even more than that. If anybody has fixed this can u let me know. Is the revlimiter 5000?

 

My tach reads (probably) accurate, usually idles around500-900RPM depending on all the factors that effect it.
I've never *intentionally* gotten it really close to 4,800RPM (redline) to see if it limits the RPM (I've gotten the needle close quite a few times, but back off the throttle).
There should be a way to get accurate RPM readings to see how accurate the tachometer is (btw, evidently controlled by some module stashed above the cluster).

 

Mine always sees the limiter

 

mine seen the limiter for a week straight every time I shifted. but the motor would never blow, those damn 3.9's go forever

 

Yea... and since I don't like the idea of taking out a perfectly good motor (and I, for the most part, take pretty good care of my truck), I probably won't be swapping in some V-8 any time soon.
However, I saw a '07 Ram 2500 4x4 Cummins in Infernored([sm=Awwww.gif]) yesterday... if I made about $550 a month more, I'd of bought that, and my Dakota would be seeing a new engine.

 

yea, i have got mad at mine a few times and tried to blow it up and it never will.