New 4runner questions

[William839]

Just picked up a 13 4runner limited . I had an 07 FJ before with the same motor (almost) and this runner has a louder engine , it also has a magna flow exhaust , but this 4runner engine almost sounds like it has a “supercharger” some forums have said it’s a idler pulley , some have said it’s normal noise on some 4Runners/1gr-Fe motors. Haven’t pulled the belt off to see if it a pulley yet. First time owning a 4runner.

 

[William839]

Anyone ?

 

[Specialeyes]

The 1GR-FE is a noisy engine. I would not say it sounds like a supercharged one though. Without knowing more about your truck it's hard to say for certain. Does yours have a aftermarket supercharger on it by chance? There is one out there from Magnusson.

 

[fjc-man]

A 2013 with how many miles?

 

[William839]

2013 117k miles , no it’s not supercharged although I wish it was lol! But there’s a very audible “whine”
It’s not the power steering pump. Happens at PRND , coasting , or stopped , pulled off the belt already , no accessory idler pulleys-ruled that out , starting to think it’s something internal, but does anyone else’s 1GR sound like that?

 

[fjc-man]

Did you give everything a spin by hand? Alternator, waterpump?

 

[William839]

Pulled the belt off and ran it momentarily and ruled out anything that’s spin by drive belt

 

[4runnermods]

Mine makes a similar sound but I had AFE intake installed 5 years ago, I remember it sounded quieter than now, it could be something related with the exhaust pipe or it could be a catalyst problem, maybe it is not funneling exhaust gases as much creating more pressure on the exhaust manifold.

Those are my theories but I could be wrong.

 

[William839]

Did some research apparently it’s normal on them . So I’m not worried anymore