Only Have One Oxygen Sensor Hooked Up?

black88 · November 18th, 2007, 03:56 PM

On my 88 GT is it bad to have only one oxygen sensor disconected? Is it robbing horsepower???

Drick · November 18th, 2007, 03:57 PM

Yes both O2 sensors need to be hooked up. they work together in read exhaust gas and it wont run right if only one is reading. And it will blow the other one preatty damn fast

black88 · November 18th, 2007, 03:59 PM

Wow thanks for the fast reply. Greatly appreciated

Drick · November 18th, 2007, 04:04 PM

LOL no problem man

morgan29 · November 18th, 2007, 09:16 PM

ya forsure you need both but i drove my mustang with only one hocked up as well

ryans88gt · November 19th, 2007, 01:46 AM

My 88 ran best with both O2 sensors disconnected back when it had SD. A little rich at idle, but a lot meaner between 1500 and 3000 rpms.

haywood11 · November 20th, 2007, 02:47 PM

how does that benifit having both diconnected? where is the gain coming from?

Drick · November 20th, 2007, 03:26 PM

Originally Posted by haywood11

how does that benifit having both diconnected? where is the gain coming from?

Exactly the only thing its going to do its what Ryan said is make it run leaner with I guess would deliver for gas to the motor but wont give you anymore HP

ryans88gt · November 20th, 2007, 03:39 PM

If you have intake and head upgrades, sometimes it actually helps out not having the O2 sensors connected on a SD system...but yeah, in general they should be hooked up if you want decent gas mileage.

SALIV8 · November 20th, 2007, 04:46 PM

in addition if u have mass air car, the computer will go into a preprogrammed mode if the o2s are not reading and itwill be slower

November 18th, 2007, 03:56 PM	#1
black88 Regular 1988 Mustang GT Hatch Join Date: Sep 2007 Location: Queens,NY Posts: 133 iTrader: 0 reviews	Only Have One Oxygen Sensor Hooked Up? On my 88 GT is it bad to have only one oxygen sensor disconected? Is it robbing horsepower???

November 18th, 2007, 03:57 PM	#2
Drick Big timin' in a small town 2004 FX4 F150, 86 GT Join Date: Apr 2007 Location: Gods country. Nordern Michigan eh Posts: 14,365 iTrader: 1 reviews	Yes both O2 sensors need to be hooked up. they work together in read exhaust gas and it wont run right if only one is reading. And it will blow the other one preatty damn fast __________________ FX4 Crew Crew member #1 Don't take anything I say to heart, I don't try to come off as an asshole. It just happens

November 18th, 2007, 04:04 PM	#4
Drick Big timin' in a small town 2004 FX4 F150, 86 GT Join Date: Apr 2007 Location: Gods country. Nordern Michigan eh Posts: 14,365 iTrader: 1 reviews	LOL no problem man __________________ FX4 Crew Crew member #1 Don't take anything I say to heart, I don't try to come off as an asshole. It just happens

November 19th, 2007, 01:46 AM	#6
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	My 88 ran best with both O2 sensors disconnected back when it had SD. A little rich at idle, but a lot meaner between 1500 and 3000 rpms. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

November 20th, 2007, 03:39 PM	#9
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	If you have intake and head upgrades, sometimes it actually helps out not having the O2 sensors connected on a SD system...but yeah, in general they should be hooked up if you want decent gas mileage. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

November 18th, 2007, 03:59 PM	#3
black88 Regular 1988 Mustang GT Hatch Join Date: Sep 2007 Location: Queens,NY Posts: 133 iTrader: 0 reviews	Wow thanks for the fast reply. Greatly appreciated

November 18th, 2007, 09:16 PM	#5
morgan29 Newbie Join Date: Nov 2007 Posts: 10 iTrader: 0 reviews	ya forsure you need both but i drove my mustang with only one hocked up as well

November 20th, 2007, 02:47 PM	#7
haywood11 Regular 1988 mustang lx interior torn out! Join Date: Jul 2007 Location: jacksonville,NC Posts: 273 iTrader: 0 reviews	how does that benifit having both diconnected? where is the gain coming from?

November 20th, 2007, 04:46 PM	#10
SALIV8 Enthusiast Join Date: Dec 2006 Location: the MURDER CAPITOL Posts: 520 iTrader: 0 reviews	in addition if u have mass air car, the computer will go into a preprogrammed mode if the o2s are not reading and itwill be slower

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