Timing belt is loose and slapping
#1
Timing belt is loose and slapping
Ok so my alternator took a $h!t the other day and just got one today and got it put on after work, well everything seemed fine until I took off and as I was warming up the car I noticed a weird vibration/noise so turned around to go back to garage and check it out well long story short it was the timing belt slapping cause it was loose, as soon as I found out what it was I killed it. I assume the tensioner pulley is going bad? Anyone ever ran into this? It didnt jump timing thank god, but I am frustrated ive been wothout an evo for like a week and as soon as I get it back together it's another issue. Is it a pretty intense job to get to this?
#4
It wasn't loose enough to let it jump teeth just loose enough to let it vibrate. I mean don't get me wrong I feel it's lucky I caught it, but it's not as loose as u guys are probably thinking. My question is, have u guys seen these hydraulic tensioners fail?
#7
Evolved Member
iTrader: (11)
I have seen it on my own car-- did a timing belt and checked tension before starting, fired it up and it seemed ok. Ran it for 2 days and checked again and it had lost tension between the pulleys. Had to reset the tensioner and it hasnt happened again.
As for the tensioner--replace it if there is a question as to it doing its job--the result of not doing it is far more costly then the price of the tensioner itself.
As for the tensioner--replace it if there is a question as to it doing its job--the result of not doing it is far more costly then the price of the tensioner itself.
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#8
Evolved Member
I have seen it on my own car-- did a timing belt and checked tension before starting, fired it up and it seemed ok. Ran it for 2 days and checked again and it had lost tension between the pulleys. Had to reset the tensioner and it hasnt happened again.
As for the tensioner--replace it if there is a question as to it doing its job--the result of not doing it is far more costly then the price of the tensioner itself.
As for the tensioner--replace it if there is a question as to it doing its job--the result of not doing it is far more costly then the price of the tensioner itself.
The tensioner has a spring inside and is filled with viscus oil and a piston that forces this oil through a small orifice. This allows the tensioner to adjust but only slowly. So, you adjust, wait, and then adjust again until perfect.
#9
Evolved Member
iTrader: (9)
Had to drive around for a couple months with a bad tensioner. Belt would get really loud and loose when engine was cold.
Change the belt and tensioner. It was fairly lengthy the first time, but I have done it 3 times since then and can knock it out in several hours (without even removing the crank sprocket).
You will be surprised how well it keeps time with it loose. Just don't park uphill with it in gear or downhill with it in reverse
Change the belt and tensioner. It was fairly lengthy the first time, but I have done it 3 times since then and can knock it out in several hours (without even removing the crank sprocket).
You will be surprised how well it keeps time with it loose. Just don't park uphill with it in gear or downhill with it in reverse
#10
Former Sponsor
iTrader: (31)
ya it sounds like hydraulic tensioner is crapping out.. and also yes.. ive seen them so loose u can almost take the belt off and u can fire the car up and drive on it, and it never skips timing.
pretty crazy.
what causes the tensioners to go early usually is from how they are installed. if your installer lets it fly open all in 1 quick jump you can blow the hydraulics out in the tensioner or shorten life drastically.
this is why i invest in the special rod tool to be able to control it and pin it so i can avoid that nonsense.
pretty crazy.
what causes the tensioners to go early usually is from how they are installed. if your installer lets it fly open all in 1 quick jump you can blow the hydraulics out in the tensioner or shorten life drastically.
this is why i invest in the special rod tool to be able to control it and pin it so i can avoid that nonsense.
#11
ya it sounds like hydraulic tensioner is crapping out.. and also yes.. ive seen them so loose u can almost take the belt off and u can fire the car up and drive on it, and it never skips timing.
pretty crazy.
what causes the tensioners to go early usually is from how they are installed. if your installer lets it fly open all in 1 quick jump you can blow the hydraulics out in the tensioner or shorten life drastically.
this is why i invest in the special rod tool to be able to control it and pin it so i can avoid that nonsense.
pretty crazy.
what causes the tensioners to go early usually is from how they are installed. if your installer lets it fly open all in 1 quick jump you can blow the hydraulics out in the tensioner or shorten life drastically.
this is why i invest in the special rod tool to be able to control it and pin it so i can avoid that nonsense.
#14
Evolved Member
#15
Evolved Member
iTrader: (4)
I have always let my tensioners just decompress without the rod tool and have never had any issues with them. Even my old *** one (60k miles) was still holding enough tension to still need the C clamp to compress it.
If your tensioner is old enough to be that jacked up, I would consider looking at your idler/tensioner pulleys as well. I just replaced mine after the ones on my old 95 corolla seized and caused my timing belt to strip all the teeth off. Luckily that was a non interference engine, but that is not the case with the evo.
Last edited by fre; Mar 12, 2012 at 12:01 PM.
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