I recharged the AC and it seems to be holding but when I ran it the belt squeeled terribly. I swapped all the belts this weekend and glad I did because two where cracked more than half way through. I noticed it is chirping still with the ac running and when at higher rpms it stilled squeeled a little. I popped the hood today while it was idling and the lowest pulley ( the double pulley ) had the inner pulley wobbling as it idled in and out like it was floating and not bolted down. I am assuming this is bad. I thought that pulley was one piece but I guess it is really two pulleys. Are they bolted together somehow? Whoever used to own this truck did some interesting things. When I swapped the Power steering pump there was no key in the keyway on the pulley. The radio was a rats nest. I am assuming something either broke or was jacklegged together at one time. I need to order the Chiltons and Haynes books but in the meantime how do I fix this?
Crazy pulley issue
- Thread starter Gremcat
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541joseph
New member
I'm sorry I can't understand what pully your talking about. Is it the one with the fan on it? Or the harmonic balancer at the bottom with 3 ribs?
Sorry it is the very bottom most pulley and I can't find a diagram anywhere online. It looks like it has three belts on it if that helps. It is the inner most pulley. I had assumed it was one piece but I guess not. When the AC is off it runs fine and no movement but kick the ac on and the inner most pulley starts to move in and out. If there is a set of bolts holding it onto the other pulleys they are missing or broke. I am guessing it is the key holding it on the shaft. I am wondering if the extra strain of the ac actually running is causing it to move where as when it is off the pulley just moves tight to the others from the inertia and stays there. The easiest thing to do is pull the rad back out and take the pulleys off and see what is happening. I just thought I would get some information first since I won't have time until Friday at the earliest between work and therapy for my leg. The other weird thing. Sometimes when I have it on fresh air vs. cabin air and the ac is running I get whiteish smoke coming out of the vents but it doesn't smell at all. I was thinking maybe with the humidity and temps so high here in NC it was just vapor but now I am not so sure.
papabear1126
Member
AC tensioner pulley
Good timing with this thread, same problem here on a 97 t4r 3.4
ac belt has a pulley with a tensioner pulley that the bearing can fail, as mine has, old as it is, the pulley froze to the bolts shaft it rides on, hence the squeel of the belt riding across the frozen pulley, the adjustment bolt/tensioning bolt snapped trying to get it off as well, so I began to search on here and found the following link though not your exact engine/parts, it is insight into the issue.
Scroll Down in post
http://www.toyota-4runner.org/3rd-gen-t4rs/87129-question-c-belt-tensioner-sparks.html
Please post how yours turns out, so far, I am having to order the entire assmbly to be safe at around 45.00+
Good timing with this thread, same problem here on a 97 t4r 3.4
ac belt has a pulley with a tensioner pulley that the bearing can fail, as mine has, old as it is, the pulley froze to the bolts shaft it rides on, hence the squeel of the belt riding across the frozen pulley, the adjustment bolt/tensioning bolt snapped trying to get it off as well, so I began to search on here and found the following link though not your exact engine/parts, it is insight into the issue.
Scroll Down in post
http://www.toyota-4runner.org/3rd-gen-t4rs/87129-question-c-belt-tensioner-sparks.html
Please post how yours turns out, so far, I am having to order the entire assmbly to be safe at around 45.00+
Mine was tensioned by what the Parts guy recommended since I haven't had to tension one without an auto/spring tensioner in along time. He said 1/2" bow. Well half inch was way to loose the belt ride up on the side of the pulley and made it look like it was wobbling at idle. I had one pop and take the other two so I went back and bought one new one and the parts guy acted confused about why I would need another one. When I explained it was too loose he got a glazed over look and then told me they only had the most expensive brand available so I would have to buy that. Put them back on in the pouring rain and tightened them as tight as I could and things are fine. Yesterday I heard a small chirp on starting that went right away but had me thinking oh no not again. Lesson learned next time I have a question I will ask a friend that does this for a living. I am still having a hard time getting enough tension on the alternator pulley even wedging a screwdriver in the slide. I can't find anything to leverage off of to get it tighter.
