2ZZ belt tensioner replacement

Technical info on the Pontiac Vibe and Toyota Matrix including do-it-yourself info
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ZZvroom
Posts: 78
Joined: Mon Oct 07, 2019 7:12 am
Location: Inside the Beltway

2ZZ belt tensioner replacement

Post by ZZvroom » Sun May 02, 2021 2:05 pm

So my hunt for the grumbling bearing continues. When we could not get the tensioner loose to get the belt off, the job morphed into "First replace the tensioner, then.."

First was seeking a source. The only explicit callout to the 2ZZ I found was the Dayco 89733. They were out of stock everywhere I checked. A friend of a friend races 2ZZ's so I asked him if I should get Toyota part, or an aftermarket. At his advice I went to PartsGeek.com and got the Metrex Part #: W0133-1894695 and of course the next day, RockAuto got the Dayco back in stock but with a $20+ price increase.

Two questions:
  1. As for installation, the GM manual says zero about removing motor mounts & jacking the engine up. The writeup I found here is on the 1ZZ, it goes into detail on such; has anyone done a 2ZZ?
  2. The PartsGeek page https://www.partsgeek.com/catalog/2003/ ... _assembly gives stern warnings about installing the tensioner, but they are cut off.
So I ask if anyone has installed a 2ZZ tensioner, and/or knows what Metrex is talking about re: tensioning the tensioner?

ZZvroom
Posts: 78
Joined: Mon Oct 07, 2019 7:12 am
Location: Inside the Beltway

Re: 2ZZ belt tensioner replacement

Post by ZZvroom » Thu May 13, 2021 8:29 am

A friend found https://youtu.be/abxTekwidY8 which is fair warning on the job's issues.

zbyers
Posts: 1628
Joined: Thu Apr 03, 2014 6:12 pm
Location: Sheffield, Pennsylvania

Re: 2ZZ belt tensioner replacement

Post by zbyers » Mon May 24, 2021 4:17 am

Replacing the 2ZZ belt tensioner is nearly identical to doing it on the 1ZZ. The reason for unbolting the motor mount is the long bolt that holds the tensioner on will not clear the frame, so removing the mount and jacking up the engine gives the clearance.
'74 Thing, '79 El Camino, '83 VW Vanagon DoKa '91 Vanagon,
'04 & '06 CRV, (2) '03 Base, '04 GT, '06 AWD, '07 Base, '17 Frontier CCLB

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ZZvroom
Posts: 78
Joined: Mon Oct 07, 2019 7:12 am
Location: Inside the Beltway

Re: 2ZZ belt tensioner replacement ... and chain tensioner

Post by ZZvroom » Fri May 28, 2021 5:22 pm

The curious aspect to me is the factory manual's total lack of mentioning the motor-mount aspect of the job.

The obvious potential disaster issue is getting the long bolt loose vs. stripping /breaking it off in the block.
The You-tube mentions heating the block around the bolt, but with an aluminum block, that's rather scary.

A further complication is the chain tensioner. I see a leak from the engine cover near the belt tensioner, and I've read here the chain tensioner is prone to leaking. It looks far more complex to got into it to replace, including having to retime the valves.

zbyers
Posts: 1628
Joined: Thu Apr 03, 2014 6:12 pm
Location: Sheffield, Pennsylvania

Re: 2ZZ belt tensioner replacement ... and chain tensioner

Post by zbyers » Wed Jun 02, 2021 6:18 am

ZZvroom wrote:
Fri May 28, 2021 5:22 pm
The curious aspect to me is the factory manual's total lack of mentioning the motor-mount aspect of the job.
*Shrug* probably since it isn't a huge ordeal.
The obvious potential disaster issue is getting the long bolt loose vs. stripping /breaking it off in the block.
The You-tube mentions heating the block around the bolt, but with an aluminum block, that's rather scary.
I haven't heated the block at all. One sheared off on it's own, and it still was easy to extract the broken bolt.
A further complication is the chain tensioner. I see a leak from the engine cover near the belt tensioner, and I've read here the chain tensioner is prone to leaking. It looks far more complex to got into it to replace, including having to retime the valves.
Replacing valve cover gasket requires zero things other than basically a 10mm socket and the new gasket.
Timing chain tensioner o-ring is just two 10mm (I think) nuts. remove those, loosen the belt tensioner up so the timing chain tensioner can be removed. Replace, crank engine over using alternator nut (22mm I think) to get the new tensioner to hook onto the chain. all done.

All of these things are non-issues and are pretty easy straightforward jobs.

I had minimal mechanical experience until I bought a Vibe. I have seen done an engine swap, replaced a clutch, and replaced several subframes. Basically have done everything to the car except rebuild motor/tranny and body work.

They are very easy cars to work and great for a first timer to use to learn on.

Call a buddy with experience. Pay him in adult beverages. Win-win.
'74 Thing, '79 El Camino, '83 VW Vanagon DoKa '91 Vanagon,
'04 & '06 CRV, (2) '03 Base, '04 GT, '06 AWD, '07 Base, '17 Frontier CCLB

Byerscrew Garage, GenVibe Facebook, How-To Index
Everything You Need To Know About the Pontiac Vibe

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