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02-28-2008, 08:00 AM | #46 | |
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Join Date: Apr 2004
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Re: Really LOUD Knocking/Timing???
Generally the TB Tensioner fails before the TB. If you put a new belt on without a TB Tensioner, they generally follow suit in failing quickly.
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1997 3.2L V6 Rodeo 32" Yoko's, 16x8 MB Wheels, 2" lift, Brushguard, KC Fog's, Loadwarrior Rack On it's way to 185k strong 2004 3.4L Tacoma TRD off-road 4x4 Double cab 32" Yoko's, Westin Bull-bar, KC Fogs 60K miles |
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02-23-2010, 01:17 PM | #47 | |
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Solution: Timing cover noise / clatter at low RPM
94 trooper timing cover noise clatter solution:
I had this noise coming from the timing cover that sounded like knocking at low RPM. It would diminish over 2,000 RPM. I've seen where people have been told its their rocker assembly or some other expensive fix, but the solution is the hydraulic timing belt tensioner. Not that it's cheap, but it is the solution. 5 hours labor, per the book. The tensioner is over $600 from Isuzu/GM, and under $200 from a Jobber. I replaced the other timing cover tensioners at the same time (note that the GM tensioner kit does NOT include the one hydraulic tensioner...!). Changed the belt at the same time and I should be good for the next 100,000 km. With 5 hours labor, you might as well... Anyways, purrs like a kitten again, and roars like a tiger when I floor it. I forgot just how quiet the 3.2l 24V DOHC is when the hydraulic tensioner is working right. That clatter noise builds up slowly over time. This fix likely works for any engine that uses a hydraulic tensioner. |
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03-09-2010, 07:34 PM | #48 | |
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Re: Really LOUD Knocking/Timing???
Fellas, just found this fourm, I'm helping a friend with a 95 Passport,
it had the dreaded tick, so he changed the oil add some Z max, and a couple of other lubes, but the ticking is back and louder than ever, it actually sounds like 2 pieces of metal banging together, I was thinking rocker/hyd adjuster, in the valve train, today I took the V/C off but nothing is broken or collapsed, I guess I need to look at the book, any ideas in the hyd tensioner?? it would be easyier to hear but the friggin starter is so loud, so, right now I'm looking for ideas, thansk Steve |
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