where at on old herald harbor? back to your truck. does the check engine light come on, stay on, or flash?. how many miles does the truck have on it?. have you ever added hopps to the fuel, to clean the injectors? you buy it by the gal at the truck stop. I kinda think you are getting ready to replace the high pressure fuel pump, I just did our 2002 sat. let me know the couple of questions first, then we'll decide. don't spend any money yet, we'll figgure it out btw, welcome to our small world, and I am sorry to be late tonight, my lady had company, and I had to be polite......