Check Engine Light Staying On

[JMBT]

I would say normal on that old of a truck especially if it has never been changed.. I had an 05 Volvo with a Cummins 870, had the originals all plastic EGR valve in it before they realized that wasn’t a good idea.. it popped at 250K and the replaced it with the upgraded metal version under warranty. Sold the truck at 550K and hadn’t had anymore problems. I would think on a system that simple the EGR tune up would be as easy as taking apart the piping and cleaning it, and replacing any applicable sensors.. should be pretty straight forward, but that is just a guess, I don’t have much experience with the 870’s.