Car misfires when warmed up.
Car misfires when warmed up. Need a tad bit of help here. My car misfires, but only when its warm.
here is the thread on my problem.
http://www.fastlouis.com/forums/viewtopic.php?t=62550
Thanks for any help!
here is the thread on my problem.
http://www.fastlouis.com/forums/viewtopic.php?t=62550
Thanks for any help!
TECH Fanatic
Joined: Jul 2006
Posts: 1,179
Likes: 0
From: North Bay, Ontario
i had some of those same codes listed in youre other post and it ended up being both Bank One sensor 1 (front drivers side) and Bank Two Sensor 2 (front passenger side) oxygen sensors. Try changing them out for new ones or if youre running LT's buy BOSCH 13111 and problem should go away. Mine did this when warmed up and it was after i washed the underneath with a pressure ......^ and yes the o2s can cause missfire
Originally Posted by CAMAROZ28AQUINO
i had some of those same codes listed in youre other post and it ended up being both Bank One sensor 1 (front drivers side) and Bank Two Sensor 2 (front passenger side) oxygen sensors. Try changing them out for new ones or if youre running LT's buy BOSCH 13111 and problem should go away. Mine did this when warmed up and it was after i washed the underneath with a pressure ......^ and yes the o2s can cause missfire
Thanks guys!
my car misfired when it was cold, then once it warmed up it ran good, like all of a sudden, like it fliped a switch and it ran fine, i looked at my o2 wires and some of them were melted. fixed it and it ran fine. i have LT so it melted em.
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FormerVendor
Joined: Apr 2007
Posts: 165
Likes: 0
From: Seattle, WA
The post-cat O2s are used for evaluating the efficiency of the catalytic converters and are not as sensitive as the pre-cat O2s. As such, your closed loop fuel mixture might not be as "accurate" as if you were running pre-cat O2s. Or maybe it is if your "open loop" tune is very accurate.
At least we know the old O2s were causing the problem.
At least we know the old O2s were causing the problem.
