Originally Posted By: Headnsouth
The only thing I've replaced on mine is the alternator and ECTS otherwise everything else is original, besides the regular maintenance items. I just replaced the original hoses and thermostat a month or so ago and thats only cause I needed a new ECTS.
The ECTS seems to be a standard thing to replace on these to the brass tipped one. When I bought mine I did NGK copper plug, wires, PCV, ECTS, removed/cleaned EGR, removed/cleaned throttle body, flushed coolant, changed serpentine, and that about covered it. The throttle body and EGR had a ton of carbon on it. Ran much better at idle when I did all this cleaning. Still getting nearly 40mpg on the highway in freezing temps here. I still have to get in there and put a thermostat in and replace radiator hoses for piece of mind.