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

o2 sensor

  • Thread starter Thread starter KILLER EX
  • Start date Start date Jun 5, 2006

KILLER EX

New Member
May 30, 2006
50
0
0
Gloucester,Mass
Jun 5, 2006
#1
  • Jun 5, 2006
  • #1
my mechanic broke one of my front o2 sensors taking it out and i used mil eliminators on the back 2 so he put the rear one in the front is this ok? they are factory sensors he said he had to trim the plug alittle to fit.
 

Stang|ess

seeking cyber partner(s)
Oct 18, 2003
941
0
37
Hawaii
Jun 5, 2006
#2
  • Jun 5, 2006
  • #2
Front o2 sensors differ from rear o2 sensors.

Im sure you noticed you got a CEL, and your car running rich and like poo. It's because the front sensors help determine your a/f ratio.

Make him buy you new OEM FORD sensors, not bosch or whatever from Autozone.
 

jstreet0204

Active Member
Jun 26, 2003
939
0
36
Winston Salem, NC
Jun 5, 2006
#3
  • Jun 5, 2006
  • #3
The only difference in the front and rear o2's is the harness. The actual o2 is the same. I have used my rear ones in the front with no issues.
 

MT1083

New Member
Sep 16, 2003
1,033
0
0
Charlotte, NC
Jun 6, 2006
#4
  • Jun 6, 2006
  • #4
The front and rear are different. Never swap them. The rears are just moniters not o2
sensors.
 

RandyStinchcomb

New Member
May 25, 2005
1,159
3
0
Randallstown, Md
Jun 6, 2006
#5
  • Jun 6, 2006
  • #5
jstreet0204 said:
The only difference in the front and rear o2's is the harness. The actual o2 is the same. I have used my rear ones in the front with no issues.
Click to expand...


very bad idea they are NOT the same. we have seen several cars come in our shop wth the EEC shorted-out because someone did this. not a good idea, unless you like to spend alot of $$$ wth me

oh......and please DO NOT buy aftermarket ones
 

jstreet0204

Active Member
Jun 26, 2003
939
0
36
Winston Salem, NC
Jun 6, 2006
#6
  • Jun 6, 2006
  • #6
MT1083 said:
The front and rear are different. Never swap them. The rears are just moniters not o2
sensors.
Click to expand...

They are not different. The EEC uses them for a different purpose. Other than the pigtail, the sensors are exactly the same and can be swapped.
 

jstreet0204

Active Member
Jun 26, 2003
939
0
36
Winston Salem, NC
Jun 6, 2006
#7
  • Jun 6, 2006
  • #7
RandyStinchcomb said:
very bad idea they are NOT the same. we have seen several cars come in our shop wth the EEC shorted-out because someone did this. not a good idea, unless you like to spend alot of $$$ wth me

oh......and please DO NOT buy aftermarket ones
Click to expand...

I usually agree with you but not on this one. They are the same four wire sensor, and I have datalogged the exact same readings from both sensors. If some one shorted them out it was because of their wiring job when they changed the pigtail.
 
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