• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Rear O2 Sensors

  • Thread starter Thread starter Cobrasvt971983
  • Start date Start date Oct 27, 2004
C

Cobrasvt971983

New Member
Sep 22, 2004
10
0
0
Spotsylvania VA
Oct 27, 2004
#1
  • Oct 27, 2004
  • #1
Am i right when i say the rear o2 Sensors dont affect performance? because i left mine unhooked because the wire's were messed up i kno the check engine light comes on and everything but the guy at the exhaust shop says i need new ones because it affects performance
 
J

jasontio

New Member
Jan 26, 2004
27
0
0
Oct 27, 2004
#2
  • Oct 27, 2004
  • #2
I have had mine unhooked for allmost a monthon my 04 no problems I was to lazy to order extensions for my prochamber. I turned them of in my programmer.

I don't think they affect anything just there to see how your cats are doing.
 

w00t

New Member
Mar 26, 2004
334
0
0
Arlington TX
Oct 27, 2004
#3
  • Oct 27, 2004
  • #3
Just get some MIL's if you are worried about the check engine light.
 

stangman

15 Year Member
Jul 10, 2003
2,690
10
69
in a 3 bed, 2 bath
Oct 27, 2004
#4
  • Oct 27, 2004
  • #4
it doesnt' affect performance
 
B

Bdharn

New Member
Dec 8, 2003
72
0
0
Oct 27, 2004
#5
  • Oct 27, 2004
  • #5
what are MIL'S? my wife wants me to put exhaust on her 01 GT to make it sound more like my 67. It has 40 flows with reg h pipe. so I was considering an O/R H/X pipe and some weld in Flows. But I to was worried about the check engine light and the computer adjusting for the O2 sensors absence????
 

flashstang04

New Member
Jun 7, 2004
154
0
0
Wichita Falls,Tx
Oct 27, 2004
#6
  • Oct 27, 2004
  • #6
jasontio said:
I have had mine unhooked for allmost a monthon my 04 no problems I was to lazy to order extensions for my prochamber. I turned them of in my programmer.

I don't think they affect anything just there to see how your cats are doing.
Click to expand...


I tried to turn mine off even though I bought some extensions, and my light is STILL on....Anybody have any suggestions. Could the light be due to the bump in fuel I gave it??? I dont have an option on my predator to turn my O2 sensors off
 
You must log in or register to reply here.

Similar threads

T
Looking for some help with 2006
  • thedudeillest
  • Mar 16, 2026
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
14
Views
443
2005 - 2014 S-197 Mustang -General/Talk- Mar 20, 2026
Noobz347
Electrical Ron Francis Headlight / Alternator Harness
  • dan50
  • Apr 30, 2026
  • Fox 5.0 Mustang Tech
Replies
0
Views
206
Fox 5.0 Mustang Tech Apr 30, 2026
dan50
A
Rough idle - cylinder 1 and 6 misfire HELP
  • austindavies935
  • Jul 24, 2025
  • SN95 4.6L Mustang Tech
Replies
12
Views
696
SN95 4.6L Mustang Tech Jul 24, 2025
gkomo
A
2020 Ford Mustang GT P0036, P0138, P0141 02 sensor help
  • AmkoA
  • Jul 29, 2025
  • 2015 - 2023 (S550) Mustang -General/Talk
Replies
1
Views
331
2015 - 2023 (S550) Mustang -General/Talk Aug 5, 2025
skkrtis
S
0
Engine Multiple o2 sensor codes, car runs terrible
  • 02newedge
  • Jun 12, 2025
  • SN95 4.6L Mustang Tech
Replies
5
Views
511
SN95 4.6L Mustang Tech Jul 19, 2025
squeak93
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?