Need help with O2 Sensors on 95 GT

Mike Souslin · 07-30-2001, 11:14 AM

My neighbor bought a 95 GT Vert and It was running pretty poorly so I decided to help her out and do a tune up on her car. The first thing I found was that the car had the wrong spark plugs in it. I mean that these things stuck into the combustion chamber almost 1/2". (I screwed them in to my old cylinder heads to see how bad it was. I can't believe that they did not hit the pistons!!!)
Anyway, I put the correct plugs, cap, rotor, wires and fuel filter in her car with great results. The problem is that I suggested that she get new 02 sensors because the car has almost 60,000 but the parts store said that the 95's have 4 02 sensors. Can anyone verify this???? My 91 has 2.
Thanks.

------------------
91 Coupe with fresh rebuild. Running Stage 2 Avenger heads (51cc chambers), Stage 2 cam (.549, .566)1.7 Crane Gold Race rockers, Port matched GT-40 upper & lower, 75mm Bullet MAF, 65mm Accufab TB, MSD 6AL, Long Tubes through off road and Dynomax muffs. Stock T-5 and 3.73 gears. Big Blue Bottle on it's way!!!
Best time so far = 60'=2.021, 1/8=8.366 at 86.37 mph and the 1/4 was 12.926 at 108.94mph.

andy669 · 07-30-2001, 11:28 AM

They have 2. Why do you want to replace them? Are you getting a check engine light? I'd try running it for awhile, they will clean themselves out.
andy

TEXSN95 · 07-30-2001, 11:57 AM

For some reason every parts store I have been to says the 95s have 4 sensors...maybe it's a nationwide problem. Yes they have 2, and this one moron at a parts store was sure he was right..saying that they had 4. He also said something about his 98 cobra in the parking lot, but it was a GT...what a tool. I'm sure new ones would help a bit but the $100 is better spent elsewhere.

------------------
Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW LCAs, Kenny Brown super subs, Steeda CC plates, aluminum driveshaft, Steeda quadrant, B&M ripper, Kirban FPR, MSD6A, Taylor wires, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 105.7 w/ 2.22 <-- 284 rwhp / 323 rwtq

302 LX Eric · 07-30-2001, 03:18 PM

Two new O2's will set her back ~$85.

Mike - what the hell are you doing helping her? Stop that! You still haven't come over to help me get my freaking flywheel off!!! What's the deal???

What's the word on the impact wrench?
E

------------------
1991 5.0 LX Coupe - 38,000 miles

13.17 @ 106.14 mph w/ 2.138 60'

Jeff7477 · 07-30-2001, 05:47 PM

Don't quote me on this, but im pretty sure they do have 4, maybe not 94 and 95, but maybe 96+. I rad an article where it says that 2 are normal, and 2 are self heating at start-up to help with emissions.

fordmanck · 07-31-2001, 06:32 AM

They have 2. They didn't go to 4 until '96 when they started putting OBD-II computers in them. The '94-'95's have the EEC-IV's in them still.

------------------
My 94 GT

bigredstang · 07-31-2001, 08:16 AM

I dont remeber the entire Boush part number ends with 135. I just put two in and it cost me $140. I really want to know where you guys where getting them. Also NO ONE stocks them here.

Greg

dinomite · 07-31-2001, 10:12 AM

ya, the 94-95s should only have 2, but they went to 4 on the 96+. no need to replace them, if there isn't a problem. I have almost 90k on my stockers in my 90lx, and passed emmisions perfectly. i know that jim_berg has the stockers on his 89, that now has a 351 in it, and he passed emmisions easily as well.

------------------
90LX AOD Convertable: Lakewood control arms, FMS springs.
Best 1/4: 15.277@92.25 (2.27 60')
AIM: dinomite1, roadracestang
dinomite@softhome.net

Mike Souslin · 07-31-2001, 09:06 PM

Thanks for the help guy's! I got it all completed yesterday. There are only 2 02 sensors and they are a beitch to get to!
Anyway, her car sounded like crap and ran like crap prior to this tune up, it would not even squeal the tires from a dead stop!!
The severe ticking noise she was hearing had to be the plugs hitting the pistons, (I'll post a picture of the difference and also a picture of what the wrong plug looked like sticking into the combustion chamber) Anyway, now it starts, idle's and runs great. You guy's should have seen her face when she floored it!
Thanks again guy's.

slo95 · 07-31-2001, 09:07 PM

I know the 95 GT has 2, I was asked "before or after the cats..." - it is a conspiracy! Well, they are before the cat's, but are only 2. Bosch number 13125? Autozone for about $55ea.

07-30-2001, 11:14 AM	#1
Mike Souslin Registered Member Join Date: Sep 1999 Location: Grove City Ohio Posts: 226	Need help with O2 Sensors on 95 GT My neighbor bought a 95 GT Vert and It was running pretty poorly so I decided to help her out and do a tune up on her car. The first thing I found was that the car had the wrong spark plugs in it. I mean that these things stuck into the combustion chamber almost 1/2". (I screwed them in to my old cylinder heads to see how bad it was. I can't believe that they did not hit the pistons!!!) Anyway, I put the correct plugs, cap, rotor, wires and fuel filter in her car with great results. The problem is that I suggested that she get new 02 sensors because the car has almost 60,000 but the parts store said that the 95's have 4 02 sensors. Can anyone verify this???? My 91 has 2. Thanks. ------------------ 91 Coupe with fresh rebuild. Running Stage 2 Avenger heads (51cc chambers), Stage 2 cam (.549, .566)1.7 Crane Gold Race rockers, Port matched GT-40 upper & lower, 75mm Bullet MAF, 65mm Accufab TB, MSD 6AL, Long Tubes through off road and Dynomax muffs. Stock T-5 and 3.73 gears. Big Blue Bottle on it's way!!! Best time so far = 60'=2.021, 1/8=8.366 at 86.37 mph and the 1/4 was 12.926 at 108.94mph.

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07-30-2001, 11:28 AM	#2
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	They have 2. Why do you want to replace them? Are you getting a check engine light? I'd try running it for awhile, they will clean themselves out. andy

07-30-2001, 11:57 AM	#3
TEXSN95 Registered Member Join Date: Mar 2001 Location: college station, tx Posts: 143	For some reason every parts store I have been to says the 95s have 4 sensors...maybe it's a nationwide problem. Yes they have 2, and this one moron at a parts store was sure he was right..saying that they had 4. He also said something about his 98 cobra in the parking lot, but it was a GT...what a tool. I'm sure new ones would help a bit but the $100 is better spent elsewhere. ------------------ Clint L. White 95 Cobra #3637 58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW LCAs, Kenny Brown super subs, Steeda CC plates, aluminum driveshaft, Steeda quadrant, B&M ripper, Kirban FPR, MSD6A, Taylor wires, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s 13.61 @ 105.7 w/ 2.22 <-- 284 rwhp / 323 rwtq

07-30-2001, 03:18 PM	#4
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	Two new O2's will set her back ~$85. Mike - what the hell are you doing helping her? Stop that! You still haven't come over to help me get my freaking flywheel off!!! What's the deal??? What's the word on the impact wrench? E ------------------ 1991 5.0 LX Coupe - 38,000 miles 13.17 @ 106.14 mph w/ 2.138 60'

07-30-2001, 05:47 PM	#5
Jeff7477 Registered Member Join Date: Jun 2001 Location: Lincoln, Nebraska USA Posts: 67	Don't quote me on this, but im pretty sure they do have 4, maybe not 94 and 95, but maybe 96+. I rad an article where it says that 2 are normal, and 2 are self heating at start-up to help with emissions.

07-31-2001, 06:32 AM	#6
fordmanck Registered Member Join Date: May 2000 Location: Seminole, FL Posts: 193	They have 2. They didn't go to 4 until '96 when they started putting OBD-II computers in them. The '94-'95's have the EEC-IV's in them still. ------------------ My 94 GT

07-31-2001, 08:16 AM	#7
bigredstang Registered Member Join Date: Mar 2000 Location: lincoln, NE Posts: 80	I dont remeber the entire Boush part number ends with 135. I just put two in and it cost me $140. I really want to know where you guys where getting them. Also NO ONE stocks them here. Greg

07-31-2001, 10:12 AM	#8
dinomite The Dude Join Date: Feb 2001 Location: Arlington, VA Posts: 1,262	ya, the 94-95s should only have 2, but they went to 4 on the 96+. no need to replace them, if there isn't a problem. I have almost 90k on my stockers in my 90lx, and passed emmisions perfectly. i know that jim_berg has the stockers on his 89, that now has a 351 in it, and he passed emmisions easily as well. ------------------ 90LX AOD Convertable: Lakewood control arms, FMS springs. Best 1/4: 15.277@92.25 (2.27 60') AIM: dinomite1, roadracestang dinomite@softhome.net

07-31-2001, 09:06 PM	#9
Mike Souslin Registered Member Join Date: Sep 1999 Location: Grove City Ohio Posts: 226	Thanks for the help guy's! I got it all completed yesterday. There are only 2 02 sensors and they are a beitch to get to! Anyway, her car sounded like crap and ran like crap prior to this tune up, it would not even squeal the tires from a dead stop!! The severe ticking noise she was hearing had to be the plugs hitting the pistons, (I'll post a picture of the difference and also a picture of what the wrong plug looked like sticking into the combustion chamber) Anyway, now it starts, idle's and runs great. You guy's should have seen her face when she floored it! Thanks again guy's.

07-31-2001, 09:07 PM	#10
slo95 Registered Member Join Date: Dec 2000 Posts: 168	I know the 95 GT has 2, I was asked "before or after the cats..." - it is a conspiracy! Well, they are before the cat's, but are only 2. Bosch number 13125? Autozone for about $55ea.