[theturbominivan]

2000, 5.9, auto, edge chipped but otherwise little done to it. 250,000 Ks.

a few days ago i noticed a slight and quick drop or 'flutter' in the engines RPM while on the highway and the check engine light come on. it didnt do it again for a day or two and the engine light went off on its own. then yesterday it did the same thing (slight flutter in RPM) more frequently, here and there (engine light turned on again). then on the way home from work my tachometer needle dropped dead for about 4 seconds and the engine sounded like it was fluttering or misfiring quite heavily till the tach came back alive and i got home.
checked the codes and of course all i get is the p1693 (issue in other computer module) but haven't had a way to see the other codes yet.

initial thoughts until i can get it checked out?

 

[Junkman]

Scan it. Guessing CKP.

 

[Clunk]

I agree, Crankshaft Position Sensor issue.
You might try checking the wiring plug.

 

[theturbominivan]

got the codes checked at the parts store since i dont have a code reader. (next purchase)
it came up as the crank sensor like i had thought and you guys also suspected.
i added my experience and some tips to this helpful page....

http://www.cumminsforum.com/forum/9...crankshaft-position-sensor-4.html#post8406745

 

[dozer12216]

I would replace both cam and crank sensor. Both have a effect.

 

[99coalroller24V]

A TPS acts like this to from my experience