Archived Engine quitting

[fetzel]

I'm posting this for my husband. He is on his way to work and having engine trouble. The Check Engine light came on, the tachometer began jumping from 0 to 2000 rpm, and the engine is quitting at stops.



Any help would be appreiciated.

 

[bpenrod]

what year truck? Tach going crazy could be crank sensor, he should check the crank and cam sensor plugs to start.

 

[fetzel]

Worked 24 hr shift on the way home she ran fine for the first 20 miles. Then tach started jumping around from 2000 - 00 rpm and runnung rough. Then after 2-3 miles ran good. Pulled fault code p 1693 using key on off on off on method. Can anybody tell me what this code means. 2000 quad cab 4x4 stock. Thanks for uour help.

 

[rkressg]

Possibly a failing CPS (Crank Position Sensor).

I would go to AutoZone and see if they can scan the codes for you.



The 1693 is a companion code. This means there is a "Soft Code" stored in the computer (either PCM or ECM) that can not be displayed with the key on/off method.



This code indicates that other codes have been set. By it self, it means nothing.



A crank sensor is only about $80 (from Cummins) and is relatively easy to change. See if you can find out the codes. Let us know, we will be more than glad to help.

-Rich

 

[fetzel]

Borrowed scan tool got codes p1690 and p0336. Checked for power at and ground through ecm at ckp sensor both ok. Going to cummins to get ckp sensor tomorrow.

 

[fetzel]

Replaced crank position sensor major PITA put her back togother all works good. Thanks for all the input.