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Toyota Avalon 97 Growl Like Noise...


Carz n Compz's Avatar
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04-04-02, 05:22 AM   #1  
Carz n Compz
Toyota Avalon 97 Growl Like Noise...

Toyota Avalon 1997 XLS 38,500km. I hear a faint growl like noise from the muffler when accelarating after stoping or after the car as run for about 5-10 mintues. Is this just the muffler starting to need replacement or is it a serious problem?

Thanks

 
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04-04-02, 05:30 AM   #2  
Joe_F
With the car cold and not running, rap on the muffler with a fisted hand. If you hear loose pieces inside it's wiped.

Check www.alldata.com for known bulletins that match your problem, if any.

 
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04-04-02, 11:35 PM   #3  
Billdo49er
Check the heatshield arount the muffler and/or cat.
these have been known to break welds and cause this particular problem.

 
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04-05-02, 04:48 AM   #4  
Carz n Compz
I had the heat shields removed from the cat and the other exaust parts when I heard a noise from the bottom of the car. This noise is like a faint grrrrrr but quite low and faint. I still can see a heat shield around the muffler but thats not the problem because the part is intact.

 
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04-05-02, 05:45 AM   #5  
Joe_F
Removing the heat shields is not a good idea, they are there for a reason, but ok...

So does the muffler check out? Could have a broken internal baffle.

 
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04-05-02, 08:32 AM   #6  
Billdo49er
You definetly do not want to leave heat shield off.I have seen cars catch fire after parking over leaves due to cat. conv.

 
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04-05-02, 09:50 AM   #7  
Joe_F
I guess I should clarify .

I meant "Ok" as in it was done, not that I agree with it . Lol.

That being said, where do we stand with this repair?

 
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04-05-02, 10:07 AM   #8  
Billdo49er
As was said before check heatshields(and repair -not remove)
and/or muffler for damage.May also be a bad hanger.

 
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04-05-02, 02:20 PM   #9  
Carz n Compz
Its not the hanger I dont think. Its like a light rrrrrowwww that you can hear from the inside but I dont think from the outside. Possibly the muffler is starting to wear. Rapping on it cold I dont hear anything thats broken inside. If I sit in the back on the passanger side (back seat) I can hear it.

 
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04-05-02, 02:25 PM   #10  
Billdo49er
Try holding a rag over exhaust pipe while running engine.This is a good trick for finding leaks.Try not to burn yourself though.
Without seeing car thats about all the info I can give.

 
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