extending o2 sensor wires.

BMW_Stu · 03-22-2009, 03:38 PM

I inatslled eBay headers and there's no where for my rear o2 sensors to go, an exhaust shop offered to extend the wires and drill new holes for them to relocate them further down, but it's not always good to extend the wires cuz it may still not work. These are the 2 rear o2 sensors, they don't have extra wire on them like the front ones. Has anyone tried this? What were your results.

PEI330Ci · 03-22-2009, 06:32 PM

The rear wires shouldn't have to be extended...there is a fair amount of slack available if you know where to look. On my old exhaust, the stock O2 wiring went back very close to the transmission brace.

BMW_Stu · 03-22-2009, 10:59 PM

Wow. How did u get to it. It's not under the valve cover.

BMW_Stu · 04-09-2009, 09:38 PM

found the extra wires beneath the middle engine cover. no need to cut.

03-22-2009, 03:38 PM	#1
BMW_Stu Registered User Join Date: Mar 2008 Location: Maryland Posts: 4,535 My Ride: HPF 330ci View My Garage	extending o2 sensor wires. I inatslled eBay headers and there's no where for my rear o2 sensors to go, an exhaust shop offered to extend the wires and drill new holes for them to relocate them further down, but it's not always good to extend the wires cuz it may still not work. These are the 2 rear o2 sensors, they don't have extra wire on them like the front ones. Has anyone tried this? What were your results. __________________ SGPhotography About My Car Pix Of My Car HQ Exhaust Clip Jaxsonmotorsports.com >X Victory X<

03-22-2009, 10:59 PM	#3
BMW_Stu Registered User Join Date: Mar 2008 Location: Maryland Posts: 4,535 My Ride: HPF 330ci View My Garage	Wow. How did u get to it. It's not under the valve cover. __________________ SGPhotography About My Car Pix Of My Car HQ Exhaust Clip Jaxsonmotorsports.com >X Victory X<

04-09-2009, 09:38 PM	#4
BMW_Stu Registered User Join Date: Mar 2008 Location: Maryland Posts: 4,535 My Ride: HPF 330ci View My Garage	found the extra wires beneath the middle engine cover. no need to cut. __________________ SGPhotography About My Car Pix Of My Car HQ Exhaust Clip Jaxsonmotorsports.com >X Victory X<

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

03-22-2009, 06:32 PM	#2
PEI330Ci 58mm of Bliss Join Date: Jul 2003 Location: PEI,Canada Posts: 3,580 My Ride: 330i, 330Ci View My Garage	The rear wires shouldn't have to be extended...there is a fair amount of slack available if you know where to look. On my old exhaust, the stock O2 wiring went back very close to the transmission brace.