Replacing Front O2 Sensors?

DiZzyBonne · October 14th, 2008, 05:40 AM

I need to replace my driver-side front O2 sensor (bank 2, sensor 1,) and while I'm doing that, I might as well replace the passenger-side one as well. My question is, do I have to unbolt and lower my exhaust, or is it possible without lowering it? How hard is it to replace it if I don't have to lower my exhaust? Obviously if I were to remove my exhaust, the O2 sensor would be a breeze, but boy, getting the exhaust off is always a pain, especially getting that damn screwdriver in there to unclip the O2 sensor from the top - although I know I have to unclip it regardless when I'm changing the sensor to begin with lol.

So once again, is it possible to change the O2 sensor while the exhaust is still installed, and if so, how hard is it?

FoxHoss · October 14th, 2008, 08:48 AM

nah, you can do it with the exhaust up there, you just have to reach for the plug because its right near the top of the transmission

use a 22mm wrench if you dont have the o2 sensor sockets, its not that hard really

zinc02GT · October 14th, 2008, 07:57 PM

To me getting to the Front O2's with the midpipe still in a PITA. I'd drop the midpipe and do it easy from right there. Also O2's for our cars are pricey...

ajm · October 14th, 2008, 08:02 PM

Id drop the mid pipe too. Pass side plug is a pain to reach with the midpipe still in place. If you drop the mid pipe half-ass itll give you enough room to reach up in there and unplug it then you can drop it all the way.

FoxHoss · October 14th, 2008, 11:54 PM

oohhhhhhh yeah... i forgot what its like to have cat's lol

i took mine out a while ago lol

yea you probly want to drop that, unless you know somone with little hands haha

ajm · October 15th, 2008, 12:16 AM

Originally Posted by FoxHoss

oohhhhhhh yeah... i forgot what its like to have cat's lol

i took mine out a while ago lol

yea you probly want to drop that, unless you know somone with little hands haha

Annddd if you do find someone with small enough hands yet long enough arms please send them my way.

Trick Tuners · October 15th, 2008, 01:28 PM

You can do it without dropping the exhaust, but its not easy. The clips are a bitch for sure.

October 14th, 2008, 05:40 AM	#1
DiZzyBonne Enthusiast 2001 Ford Mustang Bullitt Join Date: Apr 2008 Location: Bay Area Posts: 797	Replacing Front O2 Sensors? I need to replace my driver-side front O2 sensor (bank 2, sensor 1,) and while I'm doing that, I might as well replace the passenger-side one as well. My question is, do I have to unbolt and lower my exhaust, or is it possible without lowering it? How hard is it to replace it if I don't have to lower my exhaust? Obviously if I were to remove my exhaust, the O2 sensor would be a breeze, but boy, getting the exhaust off is always a pain, especially getting that damn screwdriver in there to unclip the O2 sensor from the top - although I know I have to unclip it regardless when I'm changing the sensor to begin with lol. So once again, is it possible to change the O2 sensor while the exhaust is still installed, and if so, how hard is it? __________________ Current mods: Maximum Motorsports XL Full Length Subframe Connectors Catted Bassani X-Pipe Borla Stinger Catbacks H&R Super Sport Springs MM Bullitt Crew Member #1

October 14th, 2008, 08:48 AM	#2
FoxHoss Enthusiast 02' GT Join Date: Oct 2007 Location: Brooklyn, CT Posts: 568	nah, you can do it with the exhaust up there, you just have to reach for the plug because its right near the top of the transmission use a 22mm wrench if you dont have the o2 sensor sockets, its not that hard really __________________ Nitrous is like a hot girl with an STD... you wanna hit it, but your afraid of the consequences '02 GT~dd '89 LX~still in swap mode FOR SALE: Canfeild cylinder heads 302ci 2.02-1.60 valves 54cc combustion chambers-dual vavle springs $1200

October 14th, 2008, 11:54 PM	#5
FoxHoss Enthusiast 02' GT Join Date: Oct 2007 Location: Brooklyn, CT Posts: 568	oohhhhhhh yeah... i forgot what its like to have cat's lol i took mine out a while ago lol yea you probly want to drop that, unless you know somone with little hands haha __________________ Nitrous is like a hot girl with an STD... you wanna hit it, but your afraid of the consequences '02 GT~dd '89 LX~still in swap mode FOR SALE: Canfeild cylinder heads 302ci 2.02-1.60 valves 54cc combustion chambers-dual vavle springs $1200

October 15th, 2008, 01:28 PM	#7
Trick Tuners Authorized Vendor KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 1,124	You can do it without dropping the exhaust, but its not easy. The clips are a bitch for sure. __________________ SCT Custom Tuning, JLT intakes, Aeroforce Interceptor OBDII gauges and PLX wideband products @ Trick Tuners email joe@tricktuners.com PM for super MM member deals! Super Cheap Motorsports Camera to record the Action!

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October 14th, 2008, 08:02 PM	#4
ajm Regular Join Date: May 2008 Posts: 268	Id drop the mid pipe too. Pass side plug is a pain to reach with the midpipe still in place. If you drop the mid pipe half-ass itll give you enough room to reach up in there and unplug it then you can drop it all the way.

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