What in the world is that part on my FJ?

[Cully74]

So when I start my car after long periods of it being off, I get this vibration or almost fan like sound coming from this part. It lasts for about a minute and then goes away. Can't believe how hard it is to find an FJ engine bay diagram online. Anyways...anyone know what part this is?

 

[systemdelete]

That is your secondary air pump. It helps bring the catalyst up to temp faster to lessen emissions just after startup. It should only run just after startup, for a time determined by the ecu.

 

[Cully74]

That is your secondary air pump. It helps bring the catalyst up to temp faster to lessen emissions just after startup. It should only run just after startup, for a time determined by the ecu.

Okay cool. So the noise im hearing is suppose to be there! I've been wondering about that for a while.

 

[Winterpeg]

Yep... totally normal.

For FJ specific stuff you can always peruse the fjcruiserforums.com .... piles of info there.
It's always tough to search something on a forum when you don't know the name of it though....

 

[Cully74]

Very true! Haha! Thanks for the info guys.

 

[RMackay]

My FJ definitely does not have one of those, and never had one either. Keep in mind this is a South African spec one. Had it from new although I now have a second battery there now.

 

[Cully74]

My FJ definitely does not have one of those, and never had one either. Keep in mind this is a South African spec one. Had it from new although I now have a second battery there now.

View attachment 70017

Yeah I ran across some pictures of FJ engine bays where that part was not even there. I chalked it up to different year FJs.

 

[RMackay]

Yeah I ran across some pictures of FJ engine bays where that part was not even there. I chalked it up to different year FJs.

Mine is a 2012 year model. Reckon it’s up to country vehicle standards/specs. Here in SA it’s not unheard of to remove the catalytic converters altogether after a couple years.

 

[systemdelete]

Yeah I ran across some pictures of FJ engine bays where that part was not even there. I chalked it up to different year FJs.

It's different MARKET FJs. Remember that the FJ is available around the world, here you can thank CARB and the EPA for forcing the automakers into so much extraneous equipment required for the US spec emissions. Most FJs outside North America also wont have carbon canisters, evaporative emissions, or secondary O2s to name a few.

 

[systemdelete]

My FJ definitely does not have one of those, and never had one either. Keep in mind this is a South African spec one. Had it from new although I now have a second battery there now.

View attachment 70017

I want to see more of this second battery setup. . . :) It looks far more factory than most I've seen.