i am a new cummins owner and i have a problem , i hope someone can help . i have 99 1 ton w/ about 172,000 miles on it . the problems i have is as follows , c. e. l. is w/ crank shaft sensor code , alt. does not charge , on start up tach jumps around then sets on 0 and it runs smooth . i found out the tone ring on the crank has come loose . also does the crank sensor have a paper washer on the top of it because mine does . i think someone shimmed it out to keep the tone ring from hitting it . also has any done this repair in the truck . i really need some input . thanks for your time .