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Failure Analysis: Toyota V6 Timing Belt Failure #4522792
09/22/17 02:20 AM
09/22/17 02:20 AM
Joined: Apr 2016
Posts: 781
Specific Ocean
Kibitoshin Offline OP
Kibitoshin  Offline OP
Joined: Apr 2016
Posts: 781
Specific Ocean
2000 Toyota Tundra V6 5VZ-FE got towed in for sudden loss of power and unable to start so first I check for fuel pump operation and pressure. Seems right. Truck also has 125,000mi so maybe the timing belt snapped. Pulled the timing belt cover to see this.



Did the idler pulley suddenly fail and lost all it's marbles?


Nope. (Don't mind the dirt I threw the water pump into a dirt pile.)


A failed water pump impeller shattered causing the water pump to lock up wiping out the whole belt.

Last edited by Kibitoshin; 09/22/17 02:21 AM.

Shin Gekiretsu Shin'ou'hou
01 Toyota Tundra 2WD V8 4.7L
02 Chevy Silverado C1500 V8 5.3L
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522797
09/22/17 02:39 AM
09/22/17 02:39 AM
Joined: Nov 2004
Posts: 7,797
Texas
GMBoy Offline
GMBoy  Offline
Joined: Nov 2004
Posts: 7,797
Texas
OMG! That is probably what happened. Is the motor interference and damaged as a result?

Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522799
09/22/17 02:54 AM
09/22/17 02:54 AM
Joined: Jun 2002
Posts: 2,752
Southeastern USA
FowVay Offline
FowVay  Offline
Joined: Jun 2002
Posts: 2,752
Southeastern USA
A perfect example of vehicle neglect. Seventeen years with no coolant attention, no timing belt attention, likely no plugs or other belt attention. Brakes were likely pad slap jobs and tires are were bought used from the local scrap yard.

I don't get it.

Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522801
09/22/17 03:02 AM
09/22/17 03:02 AM
Joined: Mar 2015
Posts: 5,393
Virginia
bbhero Offline
bbhero  Offline
Joined: Mar 2015
Posts: 5,393
Virginia
My sister's husband changed the water pump and timing belt at the same time on their Toyota Highlander 2005 version. I'm glad he did that based upon this carnage.


Nissan Altima 3.5 Coupe
Mobil Super 5w30 Wix 57356
"Treat your family like your friends and treat your friends like your family."
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522802
09/22/17 03:03 AM
09/22/17 03:03 AM
Joined: Sep 2015
Posts: 2,471
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,471
Malaysia
Originally Posted By: Kibitoshin

This ^ was the 'original' culprit.
The others are artifacts.

Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: GMBoy] #4522803
09/22/17 03:16 AM
09/22/17 03:16 AM
Joined: Apr 2016
Posts: 781
Specific Ocean
Kibitoshin Offline OP
Kibitoshin  Offline OP
Joined: Apr 2016
Posts: 781
Specific Ocean
Originally Posted By: GMBoy
OMG! That is probably what happened. Is the motor interference and damaged as a result?


It's a non interference motor so nothing got damaged. All new parts and it's back on the road.

Originally Posted By: FowVay
A perfect example of vehicle neglect. Seventeen years with no coolant attention, no timing belt attention, likely no plugs or other belt attention. Brakes were likely pad slap jobs and tires are were bought used from the local scrap yard.


I replaced the spark plugs, brake pads, and accessory belts earlier this year. This is my neighbors work truck so its just another typical beater work truck. For maintenance he brings it to the nearest Firestone so I have no track record on maintenance. It looked like the cooling system was worked on before, someone used blue RTV on the t-stat housing, worm clamps, new radiator. I've seen timing belts go way past their recommended replacement schedule without catastrophically failing.
I made a post on doing the front brakes here: https://bobistheoilguy.com/forums/ubbthr...ake#Post4417775

Originally Posted By: bbhero
My sister's husband changed the water pump and timing belt at the same time on their Toyota Highlander 2005 version. I'm glad he did that based upon this carnage.


My bro's Lexus LS430 original timing belt is pushing 150,000mi knock on wood.

Last edited by Kibitoshin; 09/22/17 03:22 AM.

Shin Gekiretsu Shin'ou'hou
01 Toyota Tundra 2WD V8 4.7L
02 Chevy Silverado C1500 V8 5.3L
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522822
09/22/17 04:08 AM
09/22/17 04:08 AM
Joined: Jul 2003
Posts: 4,891
New Zealand
Silk Offline
Silk  Offline
Joined: Jul 2003
Posts: 4,891
New Zealand
That used to be common on the Mitsubishi V6 too - water pump in the centre..seizes, and sometimes it's all over. I've seen them running with a seized pump...the smoke is the clue, if you are deaf.


1987 BMW R65 - Aegis SAE30
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: zeng] #4522828
09/22/17 04:22 AM
09/22/17 04:22 AM
Joined: Sep 2013
Posts: 10,676
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,676
Indiana
Originally Posted By: zeng
Originally Posted By: Kibitoshin

This ^ was the 'original' culprit.
The others are artifacts.


What's that stuff in there? Looks like there's bearings too.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522844
09/22/17 05:09 AM
09/22/17 05:09 AM
Joined: Jun 2002
Posts: 12,638
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,638
The Motor City
I don't understand how the water pump impeller break can result in the idler bearing to fail. Conversely, I don't see how the bearing failure can cause the impeller to break.

Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522861
09/22/17 05:31 AM
09/22/17 05:31 AM
Joined: Oct 2010
Posts: 9,116
Virginia Beach
Astro14 Online content
Astro14  Online Content
Joined: Oct 2010
Posts: 9,116
Virginia Beach
Looks like idler pulley failure to me...

Didn't you say that you threw the water pump into a dirt pile? Did the impeller get damaged by that, perhaps?

Either way, this thing was making some serious noise for a while before the belt finally croaked. I've never seen one that bad...

Last edited by Astro14; 09/22/17 05:32 AM.

32 Packard 15W40
02 Volvo V70 T5 0W40 M1
02 Volvo V70 XC 0W40 Edge
05 MB S600 0W40 M1
16 Tundra 1794 5W30 Pennzoil Ultra
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522887
09/22/17 06:10 AM
09/22/17 06:10 AM
Joined: Feb 2014
Posts: 595
Margate England
Claud Offline
Claud  Offline
Joined: Feb 2014
Posts: 595
Margate England
Whenever I change a timing belt I always recommend changing the water pump at the same time, along with idler pulleys and tensioner.
Most cam belts come as a complete kit (but not a water pump) anyway.

Claud.

Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522909
09/22/17 06:37 AM
09/22/17 06:37 AM
Joined: Apr 2010
Posts: 213
Detroit
Kurtatron Offline
Kurtatron  Offline
Joined: Apr 2010
Posts: 213
Detroit
When I bought my beater 1999 Solara 2 years ago, it had 184,000 miles. It also has the 1Mz-fe. I did the timing belt myself. I found that the water pump was original! Had the 99 date code stamped on it! I couldn't believe it! Owner neglect is one of the most shameful non-criminal behaviors to me. Why neglect so expensive a machine?

Last edited by Kurtatron; 09/22/17 06:37 AM.
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522957
09/22/17 07:28 AM
09/22/17 07:28 AM
Joined: Dec 2005
Posts: 10,268
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,268
Upper Midwest
This thread is not titled properly, it is not a timing belt failure rather a timing belt idler pulley failure. The pulley and idler do not last nearly as long as the belt, when I did the second timing belt change on my old 1MZ-FE the pulleys felt fine so I left them in place. About 30,000 miles later the idler started to make a knocking sound and I had to take it all apart again to replace both of them. But never have I ever seen any sort of "wear" on the belt itself.

And despite that water pump being thrown into the dirt, those deposits on the impeller and inside the housing are absolutely the result of owner neglect. My Photobucket pictures are now broken but even at well over 300,000 miles the inside of my engine has no deposits whatsoever using Toyota red and a reasonable change schedule.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522975
09/22/17 07:48 AM
09/22/17 07:48 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
Idler took out water pump. Water pump was collateral damage.


2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Failure Analysis: Toyota V6 Timing Belt Failure [Re: Kibitoshin] #4522996
09/22/17 08:13 AM
09/22/17 08:13 AM
Joined: Dec 2015
Posts: 345
Ohio
Dorian Offline
Dorian  Offline
Joined: Dec 2015
Posts: 345
Ohio
WOW! This thing needs love! My timing belt was original when it was changed at 160K in the 5S. It didn't look horrible but was overdue for sure. It was a family owned vehicle and the first two owners were old females who didn't know any better. The third owner didn't even know it had a timing belt, let alone it required attention.


15 Camry Hybrid SE 48K 0W20 Kendall bulk
14.5 Camry SE 2AR 0W20 M1 AFE 44K (Mom's)
98 Chevy Prizm 1ZZ M1 AFE 0W30 148K (Brother's)
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