Misfire After Header Install
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Melting Slicks
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From: Fayetteville North Carolina
St. Jude Donor '15
Mine did the same as what you are saying here. But I didn't pull no code's on it. I just knew it had to be something we did when I did the headers. I checked it out and saw the o2's was pluged in behind the cat's. I chged it around & runs great then.
Plus I called LG & the guy told me if I ran no cat at all these cars now will have to be tuned for that and the rear one'e will have to be turned off to get the check engine line to go off. From LG that is the only reason I paid extra for the front cat;s for the car for now.. Robert
Plus I called LG & the guy told me if I ran no cat at all these cars now will have to be tuned for that and the rear one'e will have to be turned off to get the check engine line to go off. From LG that is the only reason I paid extra for the front cat;s for the car for now.. Robert
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Melting Slicks
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From: Fayetteville North Carolina
St. Jude Donor '15
Thread Starter
Melting Slicks
Joined: Nov 2014
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From: Fayetteville North Carolina
St. Jude Donor '15
What do you mean I have moved them? I put the front sensors in the header collector and the rear sensors in the short pipe sections, I plugged them back into where they were originally plugged.
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From: Texas Hill Country
Thread Starter
Melting Slicks
Joined: Nov 2014
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From: Fayetteville North Carolina
St. Jude Donor '15
12655677
Are they different part numbers for the pigtail length or something else?
The upstream connectors come out of harnesses wrapped in heat resistant wrap, they have "christmas tree" fasteners that hold them into place, I cannot imagine how they would reach the opposite side of the car.
Did your car run like crap or just throw that code?
EDIT: Your sensor locations are probably right next to each other because you have longtubes (And probably harness extensions), I have mid lengths and the sensors are all pretty much in the original locations.
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From: Texas Hill Country
Rock auto lists the same part number for both upstream sensors:
12655677
Are they different part numbers for the pigtail length or something else?
The upstream connectors come out of harnesses wrapped in heat resistant wrap, they have "christmas tree" fasteners that hold them into place, I cannot imagine how they would reach the opposite side of the car.
Did your car run like crap or just throw that code?
EDIT: Your sensor locations are probably right next to each other because you have longtubes (And probably harness extensions), I have mid lengths and the sensors are all pretty much in the original locations.
12655677
Are they different part numbers for the pigtail length or something else?
The upstream connectors come out of harnesses wrapped in heat resistant wrap, they have "christmas tree" fasteners that hold them into place, I cannot imagine how they would reach the opposite side of the car.
Did your car run like crap or just throw that code?
EDIT: Your sensor locations are probably right next to each other because you have longtubes (And probably harness extensions), I have mid lengths and the sensors are all pretty much in the original locations.
yes, my car ran rough but not extremely bad. i almost bought new O2 sensors, dealer listed left/right as separate numbers so it gave me the idea I better check that before buying....
anyways, if you have access to someone with HPTuners or EFI Live, they can scan misfire on each cylinder independently to help narrow down if it is specific and you can go from there.
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Melting Slicks
Joined: Nov 2014
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From: Fayetteville North Carolina
St. Jude Donor '15
i missed the mid lengths part.
yes, my car ran rough but not extremely bad. i almost bought new O2 sensors, dealer listed left/right as separate numbers so it gave me the idea I better check that before buying....
anyways, if you have access to someone with HPTuners or EFI Live, they can scan misfire on each cylinder independently to help narrow down if it is specific and you can go from there.
yes, my car ran rough but not extremely bad. i almost bought new O2 sensors, dealer listed left/right as separate numbers so it gave me the idea I better check that before buying....
anyways, if you have access to someone with HPTuners or EFI Live, they can scan misfire on each cylinder independently to help narrow down if it is specific and you can go from there.
If nothing else I'll just put two new O2 sensors in it for $90 just to make sure that isn't it lol
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I still think this is ignition related. I went from stock headers and cats to catless 2" ARH and the car ran fine with just a CEL for the cats. You had to pull the wires and plugs to do the headers so it would be the first place Id look.
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From: Texas Hill Country
This will reveal itself when he logs the appropriate data, the bad cylinder(s) will stick out like a sore thumb.
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If it didn't throw anything but P0300, I dont think you'll see anything that leads to a specific cylinder.
If it was one or two cylinders, you'd generally get specific P030X (X= cylinder number) for that event.
P0300 on an otherwise healthy stock car is usually O2 related in my book
If it was one or two cylinders, you'd generally get specific P030X (X= cylinder number) for that event.
P0300 on an otherwise healthy stock car is usually O2 related in my book
Thread Starter
Melting Slicks
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From: Fayetteville North Carolina
St. Jude Donor '15
I don't believe that a plug or wire would repeatedly fix itself when I shut the car off and then start acting funny again at idle and light load.
Higgs is right I will log it with the diablo tonight and see what shows up.
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From: Texas Hill Country
If it didn't throw anything but P0300, I dont think you'll see anything that leads to a specific cylinder.
If it was one or two cylinders, you'd generally get specific P030X (X= cylinder number) for that event.
P0300 on an otherwise healthy stock car is usually O2 related in my book
If it was one or two cylinders, you'd generally get specific P030X (X= cylinder number) for that event.
P0300 on an otherwise healthy stock car is usually O2 related in my book
Just saying, it could happen.
Thread Starter
Melting Slicks
Joined: Nov 2014
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From: Fayetteville North Carolina
St. Jude Donor '15
Thread Starter
Melting Slicks
Joined: Nov 2014
Posts: 2,204
Likes: 17
From: Fayetteville North Carolina
St. Jude Donor '15
If it didn't throw anything but P0300, I dont think you'll see anything that leads to a specific cylinder.
If it was one or two cylinders, you'd generally get specific P030X (X= cylinder number) for that event.
P0300 on an otherwise healthy stock car is usually O2 related in my book
If it was one or two cylinders, you'd generally get specific P030X (X= cylinder number) for that event.
P0300 on an otherwise healthy stock car is usually O2 related in my book
I read one guy was able to log the misfires on one bank, which pointed to the O2 sensor on that side. I hope to be that lucky lol
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Melting Slicks
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From: Fayetteville North Carolina
St. Jude Donor '15
Bank 1 Sensor 1 just sits at 1.11V no movement.
It's either not plugged in or the sensor is bad I would imagine.
Double checking that connector now...
It's either not plugged in or the sensor is bad I would imagine.
Double checking that connector now...
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From: Mesa Az
you probably hurt one of the wires when you used the impact to loosen it. 10mm was I right or was I right on the phone this am hahaha.
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Thread Starter
Melting Slicks
Joined: Nov 2014
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From: Fayetteville North Carolina
St. Jude Donor '15
Connector was nice and tight.
I removed the oxygen sensor and I shook it and it rattles lol. Only thing I can think is that the impact wrench shattered it.
New sensor on the way.
I removed the oxygen sensor and I shook it and it rattles lol. Only thing I can think is that the impact wrench shattered it.
New sensor on the way.
Thread Starter
Melting Slicks
Joined: Nov 2014
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From: Fayetteville North Carolina
St. Jude Donor '15