Vibration sound after changing air filter

[Joregan75]

Hi 

I have a 2009 Avensis , I recently had a service and after they changed the air filter I have a low pitch humming noise when I rev the car . At first I thought a hole in exhaust but my mechanic checked it and he  ant find a hole . I read somewhere about air intake hose being lose so I checked it and it is , the foam around the hose where it enters the box has worn away , I tried sealing the box where it enters the box with Tech 7 but it doesn't last , the noise comes back again . Anybody have an idea of how to resolve this issue , I can't remove the air intake hose as somebody rounded the head of the bolt so can't get at it to remove it. Any ideas on what to seal it with.

[Heidfirst]

Hi John, welcome to the forum 

Iirc the 2 solutions that have been reported here either involve replacing the foam with similar or using self tappers.

[Joregan75]

 

46 minutes ago, Heidfirst said:

Hi John, welcome to the forum 

Iirc the 2 solutions that have been reported here either involve replacing the foam with similar or using self tappers.

Thanks Scott

I have put in self tappers with the tech 7 , but it comes back still , I reckon next stop is the foam . Just wondering would it be that the air filter the mechanic put in is not a toyota one , could a different air filter be bigger and not allow the box to shut down fully thus creating an air leak . I never had this issue when I went to a main dealer who used official toyota parts .

 

[Joregan75]

Hi all 

I have sealed up the air box and replaced all foam that was missing . The noise is still there , mechanic says no hole in exhaust . The only thing I'm thing is , they replaced the air filter with a generic air filter , should I only use genuine toyota air filter like I always did in past, could a generic air filter make car have a deep exhaust type sound ? 

[Joregan75]

Problem solved , I went and got an official toyota air filter and noise is gone , looks like generic air filters don't do in certain cars . 

[Jezclax]

Useful to know, bet it's similar with other cars too.

Cheers

Jez

[Konrad C]

It sounds like the third party air filter material is different, and not able to damp air resonance compared to the genuine Toyota filter. I have Crosland filter, and it not bad most of the time, unless I use large open throttle. Compare it to having K&N filter or even no filter and box at all. Induction noise.

I still have an old genuine air filter, so will compare it with a spare Crosland.