Serpentine belt broken with oil on it - Toyota Yaris Forums

HerYarisNotMine · 05-24-2011, 10:29 AM

My battery light came on last night. This morning I popped my hood to see that my serpentine belt was broken and there was oil on one of the ribs. There is some black oil on the side of the engine about midway down. My engine oil isn't black, it's more like a yellowish brown.

Any ideas as to the source of the oil before I call a tow truck?

07 HB btw

CTScott · 05-24-2011, 10:32 AM

Maybe it whacked something else when it snapped and came loose. Check the CV joint boots on the passenger side to make sure that it didn't whip and tear one, picking up the grease from inside of the boot.

Klink10 · 05-24-2011, 10:58 AM

Good call there CT. I would have checked oil level at the dipstick then looked elsewhere as in where you stated.

HerYarisNotMine · 05-24-2011, 11:08 AM

The rubber cover on top of the motor mount was chewed by a racoon more than a year ago, and it has been sort of half assed covered with some plastic covering. It would appear that the source of the oil is the motor mount, I believe the Yaris uses hydraulic fluid in these mounts correct?

So my guess is that the motor mount failed and must be replaced. What do you think?

Engine oil level is fine, same level it was at yesterday when I checked it. I will go look at the CV boots, but I don't think that's where it's coming from.

ilikerice · 05-24-2011, 11:27 AM

pictures would be very helpful

HerYarisNotMine · 05-24-2011, 11:57 AM

I'm having the car towed to a shop I'll let you know what they say.

HerYarisNotMine · 05-25-2011, 09:58 AM

As I suspected, the oil was from the busted motor mount. It will have to be replaced along with the serpentine belt.

The bearings on my water pump are also shot and it will need to be replaced. The most likely cause is when I tightened the serpentine belt myself and did not check the tension, which put too much strain on the bearings.

WARNING TO ANYONE WHO FINDS THIS THREAD

DO NOT TENSION YOUR OWN SERPENTINE BELT UNLESS YOU HAVE A TOOL TO VERIFY CORRECT TENSION.

brooklynyaris · 05-31-2011, 02:40 PM

hi i was reading your blog and i have a question. i have an 08 w/65k on it and it just lost the belt this morning. what is the pully belong to that is under the ALT. i have looked online for a diagram and called a few parts stores and they dont know the layout. i didnt really look because i was late for work.. H E L P please

CTScott · 05-31-2011, 02:44 PM

Quote:

Originally Posted by brooklynyaris

hi i was reading your blog and i have a question. i have an 08 w/65k on it and it just lost the belt this morning. what is the pully belong to that is under the ALT. i have looked online for a diagram and called a few parts stores and they dont know the layout. i didnt really look because i was late for work.. H E L P please

That's the AC compressor or water pump. There are just two belt types for the 06-11 USDM Yaris; One for ones with AC and one for ones without.

CTScott · 05-31-2011, 02:46 PM

Yaris Belt.jpg

brooklynyaris · 05-31-2011, 02:51 PM

thanks ctscott..

05-24-2011, 10:29 AM	#1
HerYarisNotMine Drives: '07 Yaris Hatchback Join Date: Jul 2010 Location: Lafayette, Louisiana Posts: 8	Serpentine belt broken with oil on it My battery light came on last night. This morning I popped my hood to see that my serpentine belt was broken and there was oil on one of the ribs. There is some black oil on the side of the engine about midway down. My engine oil isn't black, it's more like a yellowish brown. Any ideas as to the source of the oil before I call a tow truck? 07 HB btw

05-24-2011, 10:32 AM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Maybe it whacked something else when it snapped and came loose. Check the CV joint boots on the passenger side to make sure that it didn't whip and tear one, picking up the grease from inside of the boot. __________________

05-31-2011, 02:46 PM	#10
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Yaris Belt.jpg __________________

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05-24-2011, 10:58 AM	#3
Klink10 View User's Garage Drives: 2007 Yaris Liftback Join Date: Sep 2007 Location: 910 Posts: 1,229	Good call there CT. I would have checked oil level at the dipstick then looked elsewhere as in where you stated.

05-24-2011, 11:08 AM	#4
HerYarisNotMine Drives: '07 Yaris Hatchback Join Date: Jul 2010 Location: Lafayette, Louisiana Posts: 8	The rubber cover on top of the motor mount was chewed by a racoon more than a year ago, and it has been sort of half assed covered with some plastic covering. It would appear that the source of the oil is the motor mount, I believe the Yaris uses hydraulic fluid in these mounts correct? So my guess is that the motor mount failed and must be replaced. What do you think? Engine oil level is fine, same level it was at yesterday when I checked it. I will go look at the CV boots, but I don't think that's where it's coming from.

05-24-2011, 11:27 AM	#5
ilikerice Drives: 2010 black yaris Join Date: Oct 2010 Location: savannah, ga Posts: 2,868	pictures would be very helpful

05-24-2011, 11:57 AM	#6
HerYarisNotMine Drives: '07 Yaris Hatchback Join Date: Jul 2010 Location: Lafayette, Louisiana Posts: 8	I'm having the car towed to a shop I'll let you know what they say.

05-25-2011, 09:58 AM	#7
HerYarisNotMine Drives: '07 Yaris Hatchback Join Date: Jul 2010 Location: Lafayette, Louisiana Posts: 8	As I suspected, the oil was from the busted motor mount. It will have to be replaced along with the serpentine belt. The bearings on my water pump are also shot and it will need to be replaced. The most likely cause is when I tightened the serpentine belt myself and did not check the tension, which put too much strain on the bearings. WARNING TO ANYONE WHO FINDS THIS THREAD DO NOT TENSION YOUR OWN SERPENTINE BELT UNLESS YOU HAVE A TOOL TO VERIFY CORRECT TENSION.

05-31-2011, 02:40 PM	#8
brooklynyaris Drives: stock Join Date: May 2011 Location: outside of philly Posts: 2	hi i was reading your blog and i have a question. i have an 08 w/65k on it and it just lost the belt this morning. what is the pully belong to that is under the ALT. i have looked online for a diagram and called a few parts stores and they dont know the layout. i didnt really look because i was late for work.. H E L P please

05-31-2011, 02:51 PM	#11
brooklynyaris Drives: stock Join Date: May 2011 Location: outside of philly Posts: 2	thanks ctscott..