I have 134k on my '02 4.6is. I just purchased it in March of this year with 133k on it. The reason I have put less than 1k on over the last 6 month is that I have had to do the following so far:
- Replaced valve cover gaskets (they were leaking bad)
- Replaced radiator (cracked while driving and lost a lot of coolant. Running Evans now)
- Replaced driver window regulator
- Replaced FSR (fan blower motor was not working)
- Fixed stripped oil drain plug (used Time-Sert)
- Did transmission fluid replacement (dropped pan method)
- Replaced oil in front, rear and tcase)
- Replaced fuel, air, engine oil, transmission and cabin filters
Truck runs great now with no issues at all. So my question is, should I be worried about imminent chain guide failure, or should I just start driving the truck on a daily basis and then maybe look at doing the chain guides next summer when I'm at about 150k?
What are the odds that I'll have a failure between 134k and 150k?
If it is less than 10%, I'll likely not worry about it right now, but if the odds are greater than 50% a failure will occur, I'll probably tackle the issue now.
Has anyone here gone past 150k with no chain guide issues? What about 200k?
Thanks!