Alright, I have a slew of questions here.
Here's the background info before I get too deep.
I just bought a 2002 Dodge Ram 1500 last month. It is the first 4.7L I've had.
I'm sort of familiar with the 5.9 Magnum (have a '96) and the 5.7 Hemi (have a '06). The truck has 167K miles on it currently.
I'm sort of nervous about it because within the first 150 miles, I had a cylinder 8 misfire. The problem ended up being the rocker arm, which since we just bought it, the dealer fixed by just putting the rocker arm back without looking any deeper into the issue. Got it back and about 200 miles later, same problem, only with more other effects.
Cylinder 8 misfire, revved majorly on it's own, ran like hell and didn't want to go over 54 mph some of the time. Almost scared me to drive it back to the dealer--almost.
Looking into the problem further, I see that other people have the 'mysterious' rocker arm falling off for "no reason" problem.
The dealer replaced the Throttle positioning sensor and the lifter, as well as (and I quote) "some sensor thing for the transmission, but that didn't fix the problem." Ugh. Now it seems to be running great, *knock on wood*
The dealer is still willing to work with us if we have issues.
One place I looked said that I would have to replace all the rocker arms and the hydraulic lifters with new ones to actually fix the problem. Yikes!
How much would that cost? Is that actually the fix?
Could sludge/carbon build-up actually be the problem or is it really mechanical-- how the rockers/lifters are built?
(please keep in mind that I'm a college student, not a mechanic, some of the 'tech-speak' goes right over my head, though I am quite capable of figuring things out if I have to.
Thanks for ANY Help or suggestions that anyone has!