Engine buzz under load? - Page 2 - Toyota Yaris Forums

Yury · 10-13-2011, 08:46 AM

^ besides, both of us still have powertrain warranty, should something bad go down we're covered.
But I don't think anything is wrong though, the car runs like a champ.

firemachine69 · 10-14-2011, 04:14 AM

There was a TSB for the air-intake box, requiring some foam washers.

I also just blew my serpentine belt this weekend, previous noise made me miss it (chalked it up to an imbalanced four cylinder engine design).

Yury · 10-14-2011, 08:53 AM

would you happen to know where i can look at that tsb?

firemachine69 · 10-14-2011, 10:01 PM

It's in the TSB thread (sticky).

Yury · 10-14-2011, 10:28 PM

what is the number? I looked over that thread and didn't see anything about the air box.

thanks.

Yury · 10-16-2011, 02:06 PM

I cleaned the MAF sensor and the noise softened noticeably. At this point I barely hear it. I suppose the airflow was undermeasured which resulted in different timing and more air sucked thought the intake.
My mileage was pretty bad too, seems to be improving. I also cleaned the tb a week ago, but that did not change the noise.

anyhow, the engine sounds better. if it was like that when I got the car I would not have payed any attention to it.

10-13-2011, 08:46 AM	#19
Yury Drives: 2008 5 Door Liftback Auto Join Date: Oct 2011 Location: Canada Posts: 157	^ besides, both of us still have powertrain warranty, should something bad go down we're covered. But I don't think anything is wrong though, the car runs like a champ. __________________ 1999 Honda Prelude Base 5 speed (summer driver) 2008 5 Door Liftback Auto

10-14-2011, 08:53 AM	#21
Yury Drives: 2008 5 Door Liftback Auto Join Date: Oct 2011 Location: Canada Posts: 157	would you happen to know where i can look at that tsb? __________________ 1999 Honda Prelude Base 5 speed (summer driver) 2008 5 Door Liftback Auto

10-14-2011, 10:28 PM	#23
Yury Drives: 2008 5 Door Liftback Auto Join Date: Oct 2011 Location: Canada Posts: 157	what is the number? I looked over that thread and didn't see anything about the air box. thanks. __________________ 1999 Honda Prelude Base 5 speed (summer driver) 2008 5 Door Liftback Auto

10-16-2011, 02:06 PM	#24
Yury Drives: 2008 5 Door Liftback Auto Join Date: Oct 2011 Location: Canada Posts: 157	I cleaned the MAF sensor and the noise softened noticeably. At this point I barely hear it. I suppose the airflow was undermeasured which resulted in different timing and more air sucked thought the intake. My mileage was pretty bad too, seems to be improving. I also cleaned the tb a week ago, but that did not change the noise. anyhow, the engine sounds better. if it was like that when I got the car I would not have payed any attention to it. __________________ 1999 Honda Prelude Base 5 speed (summer driver) 2008 5 Door Liftback Auto

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10-14-2011, 04:14 AM	#20
firemachine69 School'er of hard knocks Drives: Silver Yaris 4dr. HB Join Date: Oct 2008 Location: Sudbury, On Posts: 556	There was a TSB for the air-intake box, requiring some foam washers. I also just blew my serpentine belt this weekend, previous noise made me miss it (chalked it up to an imbalanced four cylinder engine design).

10-14-2011, 10:01 PM	#22
firemachine69 School'er of hard knocks Drives: Silver Yaris 4dr. HB Join Date: Oct 2008 Location: Sudbury, On Posts: 556	It's in the TSB thread (sticky).