tough, but need help in identifying this sound.. - Page 2 - Toyota RAV4 Forums
4.3 Mechanical Intakes, Exhaust, Tune-ups, 4x4 system, Suspension, Brakes, etc.

User Tag List

Reply
 
LinkBack Thread Tools
#11 (permalink) Old 11-10-2012, 01:13 PM
Senior Member
Country: RF Overlord's Flag is: United States
 
Join Date: May 2009
Location: MA
Posts: 303
Thanks: 0
Thanked 14 Times in 14 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by pepepeter View Post
If there were bumps on the road I could see how that would cause the exhaust or its shielding to rattle, but i dont see how very gentle acceleration would cause it to rattle if it was loose.
Exhaust systems, being similar to organ pipes, can resonate with engine RPM & exhaust flow and cause a lot of weird-o sounds. Not saying this is your problem, just explaining how it's possible.

It's actually my sister's, but I'm the family wrench.
RF Overlord is offline  
Sponsored Links
Advertisement
 
#12 (permalink) Old 11-19-2012, 05:21 PM
Senior Member
Country: pepepeter's Flag is: United States
 
Join Date: Jan 2011
Location: Phoenix Metro, AZ
Posts: 422
Thanks: 30
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Quote:
Originally Posted by Carbon View Post
Tappet noise would be a regular ticking with the cause being a hydraulic adjuster not fully doing its job. I think a rattle would be less regular. Does your sound sound like ball bearings bouncing around in the engine? If so, consider trying a couple tanks of high octane gasoline to see if that reduces the sound.
Somewhat does or could sound like that. i did try a full tank of high octane (91) with no improvement at all. I could try 2 tanks next time, although I doubt I will do that without first having a mechanic listen in while I drive.

Quote:
Originally Posted by Carbon View Post
The sound is not loud enough to be heard in the vehicle, it can only be heard with the windows down and easier to hear when driving near a wall or buildings; sounds bounces off as I mentinoed eariler. However, the last link regarding the catalyic converter almost sounds very similar. Will look into this by simply banging on it to test for loose parts. Thanks.
pepepeter is offline  
#13 (permalink) Old 11-19-2012, 05:26 PM
Senior Member
Country: pepepeter's Flag is: United States
 
Join Date: Jan 2011
Location: Phoenix Metro, AZ
Posts: 422
Thanks: 30
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Quote:
Originally Posted by dandel View Post
My 2011 developed a similar (per your description) noise earlier this summer. My mechanic identified it as a loose baffle inside the muffler. Took it to the Toyota dealer (still under warranty) 4 times before they finally admitted that was the noise. So after 4 visits, they finally changed the muffler...............noise gone.
Oh wow, so you know exactly what I am talking about then.. thank goodness finally another owner that has/had a smiliar experience.

Somewhat concerned given that mine is a 2008, but is under the "extended" warranty. Why did it take so many trips for them to realize/agree the cause of the sound? Oh wait nevermind.. it was the dealership . In between these visits what did they claim was the source of the sound (did they ever admit to hearing it)? Would like to know so i can steer the dealer away from these coming up as reasons for my rav4. I hope its a loose baffle with my rav4. Thanks.
pepepeter is offline  
#14 (permalink) Old 11-19-2012, 08:19 PM
Senior Member
Country: Noel's Flag is: Australia
 
Noel's Avatar
 
Join Date: Oct 2010
Location: Worrigee NSW Australia
Posts: 245
Thanks: 49
Thanked 8 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
i asked about tappet noise because my tensioner pulley is failing and that is what it sounds like.
Noel is offline  
#15 (permalink) Old 11-20-2012, 02:00 PM
Senior Member
Country: pepepeter's Flag is: United States
 
Join Date: Jan 2011
Location: Phoenix Metro, AZ
Posts: 422
Thanks: 30
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Quote:
Originally Posted by Noel View Post
i asked about tappet noise because my tensioner pulley is failing and that is what it sounds like.
so are you saying the sounds of a failing tensioner pulley can be very similar to tappet noise?

I do recall coming across a TSB for the idler pulley and my VIN does fall in the category of AFTER production (calls for replacement of idler pulley only). Is the idler pulley capable of making similar sounds?
Attached Files
File Type: pdf T-SB-0056-11_idler pulley noise.pdf (210.2 KB, 1 views)
pepepeter is offline  
#16 (permalink) Old 11-21-2012, 03:59 PM
Member
Country: dandel's Flag is: United States
 
dandel's Avatar
 
Join Date: Mar 2011
Location: New York
Posts: 66
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by pepepeter View Post
Oh wow, so you know exactly what I am talking about then.. thank goodness finally another owner that has/had a smiliar experience.

Somewhat concerned given that mine is a 2008, but is under the "extended" warranty. Why did it take so many trips for them to realize/agree the cause of the sound? Oh wait nevermind.. it was the dealership . In between these visits what did they claim was the source of the sound (did they ever admit to hearing it)? Would like to know so i can steer the dealer away from these coming up as reasons for my rav4. I hope its a loose baffle with my rav4. Thanks.
I took it to my own (private) mechanic first and he said that it sounded like a loose baffle in the muffler. (He was right.) Then I took it to the dealer (under warranty). They listened and said that it was too "intermittent" and they couldn't pin it down. "Drive it a while and if it still does it, bring it back". Brought it back the sencond time and they rode with me and listened again. "Can't pin it down. We'll talk to the regional technician". Brought it back the third time. "Maybe muffler, maybe not we'll call you back after we drive another Rav4 & listen to that one" (such BS). Finally, the fourth time they could see I was really pi$$ed, and the tech said yea, it sounds like the muffler-we'll order a new one and replace it.
dandel is offline  
Sponsored Links
Advertisement
 
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome