Maintenance Time guys. Last year I replaced the driver's side CV boots and now the passenger side outer is leaking, so that needs to be addressed. I also recently replaced the MAF with a new one. Acceleration wasn't quite as strong as before and I noticed leaner fuel mixtures on the wideband and and a reoccurring CEL P0171 lean bank code. I think the original MAF had simply been cleaned too many times and was no longer reading accurately. I took a gamble on a Denso MAF on Amazon ($67 vs twice that at Toyota) and it appears to be a completely legit product. Power is restored and it will easily chirp the tires going into 2nd gear.
It's time to do the full maintenance sweep on this thing. We currently sit at 160k. Here's what I'm thinking:
-Lube u-joints
-Drain & refill front & rear diff fluids, transmission and xfer case (Redline synthetic)
-Replace rear diff breather (it's original)
-Flush clutch fluid (that third pedal on the far left for those unfamiliar)
-Flush brake fluid
-Flush power steering fluid (it's original) How should I do this? Suck it out with a turkey baster and slowly replace?
-Flush coolant
Engine-Related:
-Replace timing belt (it's original) Do I need new idlers/tensioners?
-Replace water pump (it's original)
--> Should I do valve cover gaskets and cam shaft eccentrics? (original and not leaking)
-Replace spark plugs
-Replace spark plug wires (they are original)
-Replace PCV valve & grommet (it's original)
-Replace upper and lower radiator hoses
-Replace drive belts (AC, PS, alt, supercharger)
Other:
-The supercharger gets furry around the nosedrive. Thinking I should at least top it off with SC fluid to not risk running it dry. I understand the nose cone typically needs to be replaced around 100k and I think I'm at half that. It's quiet, so I won't do that yet.
-The positive battery cable/lug looks brittle. Thinking I should replace it.
-Is there any good reason to have the fuel injectors balanced/cleaned while I'm in there? Adds cost and takes it out of service for at least a week. I seem to remember Bob had an issue with this?
Otherwise, the thing runs super smooth, has great performance and you could practically eat off the motor--no leaks other than the slightly furry SC nose cone.
Any other maintenance items I'm missing? Ball joints were replaced not long ago, fuel filter is reasonably fresh. Brakes and suspension are all in very good shape. I'm not looking to do unnecessary stuff but while I have it apart I want to address common maintenance items on a 20-year old truck.