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not sure why the truck is doing this but the other day i was driving to work and my tach guage dropped to zero but my truck was still running and moving but it felt like it was a stock truck again, then the tach started working again and it was fine for a couple days now it is an every day problem anyone got any idea's on what this problem is and or how to fix it? and by stock trcuk again i mean total pooch it has no power no acc. no anything and maybe will puff smoke not lay it thick and heavy when its not doin this

 

Try resetting the truck back to stock to see if its Smarty or Juice related.. Sounds like an ECM problem

 

Crankshaft position sensor. Happened to mine. Lose the tach and truck starts to buck and run rough? Then goes away.

Hope that helps.

John

 

No crankshaft position sensor in 2000. Cam position sensor takes its place. Its located up under the VP pump. Can be changed from under the truck, it's not easy but it can be done.

 

Oops! Didn't notice his year of truck. Correct 98.5Hotrod. Sorry for hte wrong info.

Good Luck,

John

 

No need to be sorry, you were just trying to help. Your info was correct, just wrong year.

 

I guess I'll take by reciept back to Sunshine Dodge for the CPS they installed in my 2000 cummins in 2001. The Tach was like a windshilf wipper some time.

Dave

 

thganks guys for all the help replaced it today and its runnin great thanks again

 

False. 2k does have a CPS. It was eliminated in '01.