Another O2 sensor question!?!
05-28-2009 | 01:50 PM
#1
Another O2 sensor question!?! Let me see if I can explain this correctly…
I had my car dyno tuned and everything was working great for about two weeks… Then the car started throwing O2 sensor codes… bank one, sensor 1 and 2… bank two, sensor 1 and 2…
I replaced both O2 sensors and the O2 sims in the back.... The light went off for about a week… ((when the light comes on it runs like ****)) When the light came back on I took it back to the place that tuned the car and they told me that the O2 sensor circuit was not responding at all. It wasn’t working at all… So I replaced the sensors one more time and still the same thing…. The place tuning my car eventually deleted the O2 “circuit” or whatever it’s called completely, and tuned it with the mass air sensor only.
Has anyone ever heard of this before, or had their O2 sensors mess up like this?
I had my car dyno tuned and everything was working great for about two weeks… Then the car started throwing O2 sensor codes… bank one, sensor 1 and 2… bank two, sensor 1 and 2…
I replaced both O2 sensors and the O2 sims in the back.... The light went off for about a week… ((when the light comes on it runs like ****)) When the light came back on I took it back to the place that tuned the car and they told me that the O2 sensor circuit was not responding at all. It wasn’t working at all… So I replaced the sensors one more time and still the same thing…. The place tuning my car eventually deleted the O2 “circuit” or whatever it’s called completely, and tuned it with the mass air sensor only.
Has anyone ever heard of this before, or had their O2 sensors mess up like this?
05-29-2009 | 04:26 AM
#5
Launching!
Joined: Feb 2004
Posts: 260
Likes: 0
Probably,
With the amount of modifications done to the engine it will be difficult for it to run in full closed loop anyway!
One thing you could try is to set the switching point for the O2's from the stock setting (?) to 550mv all the way across the table.
(You'll need tuning software to enable this).
With the amount of modifications done to the engine it will be difficult for it to run in full closed loop anyway!
One thing you could try is to set the switching point for the O2's from the stock setting (?) to 550mv all the way across the table.
(You'll need tuning software to enable this).
05-31-2009 | 04:04 PM
#7
Probably,
With the amount of modifications done to the engine it will be difficult for it to run in full closed loop anyway!
One thing you could try is to set the switching point for the O2's from the stock setting (?) to 550mv all the way across the table.
(You'll need tuning software to enable this).
With the amount of modifications done to the engine it will be difficult for it to run in full closed loop anyway!
One thing you could try is to set the switching point for the O2's from the stock setting (?) to 550mv all the way across the table.
(You'll need tuning software to enable this).
You can try plugging the front 02's into the rear o2 sensor plugs and changing the pinouts at the pcm on the blue connector. You have to swap 4 of the tan wires and 4 of the purple wires around.
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06-01-2009 | 03:13 AM
#8
Launching!
Joined: Feb 2004
Posts: 260
Likes: 0
Then the car started throwing O2 sensor codes… bank one, sensor 1 and 2… bank two, sensor 1 and 2…
I replaced both O2 sensors and the O2 sims in the back.... The light went off for about a week… ((when the light comes on it runs like ****))
I replaced both O2 sensors and the O2 sims in the back.... The light went off for about a week… ((when the light comes on it runs like ****))
