Anyway to check which O2 sensors are dead for a 95?
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Senior Member
Joined: Mar 2001
Posts: 841
Anyway to check which O2 sensors are dead for a 95?
I just filled up my last tank and I got 17 mpg with 50/50 c/hwyk driving 
.
Last tank was 22 and the one before 23. I figured that was in-line with what I was driving. My guess is one of the 4 O2 sensors are dead either that or all of them are dead
?
Any way for me to check and see which O2 sensor is dead? I understand the 95s engine light does not come on?
.Last tank was 22 and the one before 23. I figured that was in-line with what I was driving. My guess is one of the 4 O2 sensors are dead either that or all of them are dead
?Any way for me to check and see which O2 sensor is dead? I understand the 95s engine light does not come on?
Don't know why your MIL won't light but you can test em one by one with a digital voltmeter. Check for correct signal voltage on each. Then check the battery voltage supply and resistance of each O2 heater.
Too bad you don't have an OBDII plug to just scan it
Too bad you don't have an OBDII plug to just scan it
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Joined: Feb 2002
Posts: 41
Beleive me you that light does work. The 95s are known for faulty or over sensative OS2 sensor. In my case whenever my wife uses cheap gas my check engine light comes on even though I've have the sensors replaced a while ago. Once I put in 93 octane the light goes back off after a few tanks. I just hate when it comes on cause I never know if its a true issue....
Senior Member
Joined: Jan 2001
Posts: 1,397
Why not?
Originally posted by Phoenix25
Beleive me you that light does work. The 95s are known for faulty or over sensative OS2 sensor. In my case whenever my wife uses cheap gas my check engine light comes on even though I've have the sensors replaced a while ago. Once I put in 93 octane the light goes back off after a few tanks. I just hate when it comes on cause I never know if its a true issue....
Beleive me you that light does work. The 95s are known for faulty or over sensative OS2 sensor. In my case whenever my wife uses cheap gas my check engine light comes on even though I've have the sensors replaced a while ago. Once I put in 93 octane the light goes back off after a few tanks. I just hate when it comes on cause I never know if its a true issue....
Senior Member
Joined: Aug 2000
Posts: 2,835
Originally posted by Phoenix25
Beleive me you that light does work. The 95s are known for faulty or over sensative OS2 sensor. In my case whenever my wife uses cheap gas my check engine light comes on even though I've have the sensors replaced a while ago. Once I put in 93 octane the light goes back off after a few tanks. I just hate when it comes on cause I never know if its a true issue....
Beleive me you that light does work. The 95s are known for faulty or over sensative OS2 sensor. In my case whenever my wife uses cheap gas my check engine light comes on even though I've have the sensors replaced a while ago. Once I put in 93 octane the light goes back off after a few tanks. I just hate when it comes on cause I never know if its a true issue....
You could be tripping the knock sensor, not the O2 sensor, with cheap gas.
Member
Joined: Feb 2002
Posts: 41
Originally posted by Eric L.
You could be tripping the knock sensor, not the O2 sensor, with cheap gas.
You could be tripping the knock sensor, not the O2 sensor, with cheap gas.
I was always told it was my o2 sensor - Interesting... Thanks! I'm glad I joined this site!!!!! Very informational! Never realized how cool my Max is!
Re: Anyway to check which O2 sensors are dead for a 95?
Originally posted by Finality
I just filled up my last tank and I got 17 mpg with 50/50 c/hwyk driving.
Last tank was 22 and the one before 23. I figured that was in-line with what I was driving. My guess is one of the 4 O2 sensors are dead either that or all of them are dead?
Any way for me to check and see which O2 sensor is dead? I understand the 95s engine light does not come on?
I just filled up my last tank and I got 17 mpg with 50/50 c/hwyk driving
.Last tank was 22 and the one before 23. I figured that was in-line with what I was driving. My guess is one of the 4 O2 sensors are dead either that or all of them are dead
?Any way for me to check and see which O2 sensor is dead? I understand the 95s engine light does not come on?
knock sensor
upstream left bank O2 sensor
upstream right bank O2 sensor
just ordered a new knock sensor online, but am not sure what to do about the 02 sensors..
Senior Member
Joined: Jun 2001
Posts: 295
Re: Anyway to check which O2 sensors are dead for a 95?
Originally posted by Finality
I understand the 95s engine light does not come on?
I understand the 95s engine light does not come on?
My 2nd O2 sensor is bad. I just took my car to my mechanic and he hooked it up to the machine and told me which one it was...
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