Like the title states, I am hearing a sound on my 92 4runner SR5. It is the 3.0L V6 automatic and the sounds is like a baseball card in bicycle spokes and the sound seems to come from under the hood on the drivers side. That is really the best way to describe the sound.

The sound only happens when accelerating and goes away when not accelerating at all.

Anyone know what this could be?

Thanks in advance.

 

exhaust leak??

 

I will check that, also I do not think the timing belt or water pump have ever been replaced along with the idler pulley. Could these be the culprits for the growling noise?

 

Check the oil. Might be a rod knocking. Is it consistent with RPM's?

 

Yes it is consistent with RPM's and also makes the noise when in neutral.

 

is it as slow as a card in the spokes, check idler pulley on ac, fan pulley. my ac idler made a loud kkhhhrrrr sound until i replaced it it drove me nuts

 

Yes it is pretty slow, and I will check that out thanks everyone I will report back later with my results.

 

valve shimed wrong

 

Could be a wrist pin too

 

If it speeds up with higher RPMs it may be valve lash is out of speck.

 

Did you solve this issue? My 88 started doing this on way to work today.