odd bank misfire
#1
odd bank misfire
For the last year and change, i've had misfires on 1, 3, and 5. I'm approaching 167,000 miles so today I picked up a pair of upstream NTK sensors. Am I correct to assume that being a whole bank, it's likely an O2 sensor? I wouldn't expect it to be anything in the valvetrain, but I suppose I should pull that VC off and take a lookieloo since I run the harland 1.7 rockers. Should I try replacing both driver side sensors instead of both upstreams?
#3
That's what I thought. Upstream checks the A/F and misfire condition right?
If it was both banks, I would blame the MSD or Sean's tune or a sloppy timing chain or lifters or any of the other 500 worn out parts at 170K miles. But being one bank is really odd. So I thought, let's try the very possibly OEM/factory O2 sensors.
If it was both banks, I would blame the MSD or Sean's tune or a sloppy timing chain or lifters or any of the other 500 worn out parts at 170K miles. But being one bank is really odd. So I thought, let's try the very possibly OEM/factory O2 sensors.
#6
well, might have found half the problem. Look closely at the blue wire of the old O2. Not only was the loom burned off, but the insulation was melted off the wire, all of which was laying on the catalytic convertor itself. No idea how that didn't throw a code.
O'Reilly's also sold me the wrong replacement O2's. The connectors dont match where the notches line up on the side.
20141221_113208.jpg
20141221_113247.jpg
O'Reilly's also sold me the wrong replacement O2's. The connectors dont match where the notches line up on the side.
20141221_113208.jpg
20141221_113247.jpg
Last edited by magnethead; 12-21-2014 at 12:44 PM.
#7
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#8
yep. So i'm gonna go chew some poor sap a new one soon as dad gets home from the store.
Closeup on the old wires
20141221_114612.jpg
Closeup on the old wires
20141221_114612.jpg
#9
This is the sensor I got, NTK 23135. O'R and Advance both say it fits. Wierd.
http://www.oreillyauto.com/site/c/detail/NTK0/23135.oap
http://shop.advanceautoparts.com/p/n...lVehicle=false
Looks like the 23137 is the one I want, based on photos.
http://www.napaonline.com/Catalog/Ca...137_0295696309
http://www.oreillyauto.com/site/c/detail/NTK0/23135.oap
http://shop.advanceautoparts.com/p/n...lVehicle=false
Looks like the 23137 is the one I want, based on photos.
http://www.napaonline.com/Catalog/Ca...137_0295696309