O2 sensor problems after header install
11-09-2008, 06:21 PM
#11
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Any thoughts?
11-09-2008, 10:55 PM
#14
I have the OBX long tube headers (old style dynatechs with the drivers side hump) and if you've seen some of my other threads, you'll see when it's cold outside my truck will softly miss in the mornings until warmed up.. My drivers side 02 heats up MUCH FASTER than the pass side 02. After warming up then the truck runs great. This is due to the fact I think as pointed out earlier that the stainless cools so fast that it's hard to get the 02's hot enough. FWIW I have the 02's in the forward most positions and this still occurs. Just something I'll live with 
11-09-2008, 11:45 PM
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Thats how mine is.
As for dyantech paying for o2 sensors i woudn't hold my breath.
Even though it may be a fault of the product most companies will not replace parts that break because of something they sold you but rather replace a faulty part they sold.
Sucks but kinda how it works in the world of performance.
If you had the dealership replace the o2 when it went abd the first time chances are they will warrenty the o2 for you.
When i had this problem i got my dynatechs before they had been around for a long time so the problem was not well known.
I had to buy two sensors because two of mine got fubard taking them out. Threads freaking came apart for whatever reason.
Anyway the place i got my o2's covered the sensors 3 differant times before i went against the advice of not moving the rear o2 into the cat.
Moved it forward and boom no more problem for me.
11-10-2008, 06:01 AM
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I have the OBX long tube headers (old style dynatechs with the drivers side hump) and if you've seen some of my other threads, you'll see when it's cold outside my truck will softly miss in the mornings until warmed up.. My drivers side 02 heats up MUCH FASTER than the pass side 02. After warming up then the truck runs great. This is due to the fact I think as pointed out earlier that the stainless cools so fast that it's hard to get the 02's hot enough. FWIW I have the 02's in the forward most positions and this still occurs. Just something I'll live with
Would using header wraps help keep the temp up for the sensors? Will Header wraps also help me keep the engine compartment temp down?
11-10-2008, 06:08 AM
#18
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You can have the rear o2s turned off via a tune and it will pass no problem.
Thats how mine is.
As for dyantech paying for o2 sensors i woudn't hold my breath.
Even though it may be a fault of the product most companies will not replace parts that break because of something they sold you but rather replace a faulty part they sold.
Sucks but kinda how it works in the world of performance.
If you had the dealership replace the o2 when it went abd the first time chances are they will warrenty the o2 for you.
When i had this problem i got my dynatechs before they had been around for a long time so the problem was not well known.
I had to buy two sensors because two of mine got fubard taking them out. Threads freaking came apart for whatever reason.
Anyway the place i got my o2's covered the sensors 3 differant times before i went against the advice of not moving the rear o2 into the cat.
Moved it forward and boom no more problem for me.
Thats how mine is.
As for dyantech paying for o2 sensors i woudn't hold my breath.
Even though it may be a fault of the product most companies will not replace parts that break because of something they sold you but rather replace a faulty part they sold.
Sucks but kinda how it works in the world of performance.
If you had the dealership replace the o2 when it went abd the first time chances are they will warrenty the o2 for you.
When i had this problem i got my dynatechs before they had been around for a long time so the problem was not well known.
I had to buy two sensors because two of mine got fubard taking them out. Threads freaking came apart for whatever reason.
Anyway the place i got my o2's covered the sensors 3 differant times before i went against the advice of not moving the rear o2 into the cat.
Moved it forward and boom no more problem for me.
If I can turn off the rears with a tune and pass emissions, could I just turn the fronts off and still pass, since that is where the problems are?
11-10-2008, 08:06 AM
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I spoke to my dealer/installer today (armed with knowledge learned here) and they said they will just fix the computer to not turn on the trouble light when it reads that code. A remarkably siimple fix that even a dealer can do.
Hopefully this fix can save the next guys from replacing O2 sensors.
Thanks for all your help.
Hopefully this fix can save the next guys from replacing O2 sensors.
Thanks for all your help.