We have a 93 Cummins diesel, D250, automatic, 2 wheel drive. The speedometer, charging system and a/c stopped working. The transmission is also not shifting properly in od. We have replaced the ECM, crank position sensor, battery and alternator and still have the same problems. Can anyone help?

 

Check the big electrical block on the firewall where it plugs in. Also make sure the wires running off the crank sensor are not broke or grounded out. Are you sure the new ECM is good? Is it new, used, or rebuilt? Is it the right # one to replace the old one?

Bill

 

Hey David, check HELP, I posted there for you. Rick

 

The ECM is a new one from dodge. We will check the wires on the crank sensor and try the original ECM and see what happens.

 

Seems like I remember there being a gap the crank sensor is supposed to be set at, can't remember what it is right now. Its in the book.

 

Just checking. Did you solve your problem? What was it, or is it not yet found.

We wround here like to know if we have helped or not

 

The sensor gap is .049" - .051".....

pretty much using .050 is right on... just make sure to set the gap well away from any notch in the harmonic balancer AND use a non-magnetic feeler gauge as noted in manual..

Bob.

 

My 92 did same thing ended up putting new engine controller in and it fixed it, there is a way to wire around control but I didn't see post before buying a new one . hope you get it solved .