40 amp fuse??? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

dcporsche99 · 02-09-2007, 11:25 AM

Hey guys,

Need your help. I can't seem to find this fuse online. I did a few searches on our site and just a general google search. Came up empty.

Anyway, this fuse is one of two big orange ones located in the rear trunk on the left side. They are just in front of the relay box. I am ONLY presuming that it should be the same as the one on the far left.

To my suprise, it was EMPTY when I was putting my trunk liners back in after checking the housing for my newly installed post-cat O2 sensors. I really don't know what this fuse is for. My service manual for fuses and relays seems to point to the rear spoiler???

But, I'm really not sure...any help???

I'd appreciate any feedback.

Thanks in advance.

MNBoxster · 02-09-2007, 11:38 AM

Hi,

This is the 40Amp fuse for the Secondary Air Pump. See: http://www.knukonceptz.com/productDetail.cfm?prodID=MAXI5-40A for a 5-pack. Hope this helps...

Happy Motoring!... Jim'99

dcporsche99 · 02-09-2007, 11:51 AM

Thanks Jim! That was FAST!!

I tell ya, this forum.....definitely couldn't own this car without it!

dcporsche99 · 02-09-2007, 12:00 PM

BTW Jim, maybe a silly question but, where is the secondary air pump located and how come I didn't notice this while driving??

CJ_Boxster · 02-09-2007, 12:05 PM

Quote:

Originally Posted by dcporsche99

BTW Jim, maybe a silly question but, where is the secondary air pump located and how come I didn't notice this while driving??

cause it only comes on in the am or when you start the car first time in say.... 6 hours and operates sorta quietly for afew seconds then turns off.

CJ_Boxster · 02-09-2007, 12:03 PM

It was blown on my boxster afew weeks ago... i think cause the Pasadena Ferrari/Porsche dealer that replaced my seat belts alittle more than 2 years ago tapped into the red wire that leads into that 40 amp fuse for extra ground. When that fuse blew, the air bag light came on.

dcporsche99 · 02-09-2007, 12:13 PM

Hey CJ,
Sorry, maybe I need more coffee to wake me up or something, but I'm not sure I'm following you? Are you saying that the fuse maybe missing purposely and I shouldn't replace it?? OR are you suggesting that this may be the reason why my airbag light might be on??

As for your second reply,...ohhhh, I see. I'll have to check it out, when I turn the car on. I don't think I have heard that sound before,..at least on this car...I guess ever since I bought it, I never heard it...thus, never noticed. Thanks.

BTW, how does this secondary air pump help the car if it only turns on for a short while??

CJ_Boxster · 02-09-2007, 12:23 PM

The question about the airbag light.... No, this doesnt apply to you, This was some kinda of mickey mouse job that the porsche dealer did to my boxster. I dont think its typical. I was just telling a story while telling you that you DO need the fuse but if its missing you wouldnt notice.

Second question... Yes you should goto PepBoys and buy the 40amp fuse and install it, It supplies the engine with needed vacum when first started.