I read that.. 
Tuning trouble??
Thread Starter
TECH Apprentice
Joined: Oct 2008
Posts: 330
Likes: 0
From: Wheaton, Illinois
Tuning trouble?? Have a 01 TA Ws6 a4, has mild cam full exhaust and converter. Nothing too major. I have had the car dyno tuned. The trouble that im having is the o2 sensor on the driver side, bank 1 sensor 1 is not responding. The passanger side is working just fine and I have the back 2 sensors deleted. I have changed the sensor multiple times, gotten new extensions, and even went back to the shop that i had it tuned at to look at it again. I have latley re-run new 02 wires from the pcm to the sensor and that is not fixing the problem either. Is there some way that the tune is messed up?? Only reason that i ask this is because this sensor that is not working is reading the same mv as the 2 that are deleted approx 447-450. Please help, i just dont know what to do anymore.
Thread Starter
TECH Apprentice
Joined: Oct 2008
Posts: 330
Likes: 0
From: Wheaton, Illinois
Yes, wires where changed all the way back. Ran completly new ones, and still doing the same thing. When I check to see if there is continuety in the wires there is. Its just not reading them in the computer for some reason and dont know why.
also to previous post, I did swap the sensors side to side, didnt make a difference. Still no reading on it.
also to previous post, I did swap the sensors side to side, didnt make a difference. Still no reading on it.
Teching In
Joined: Aug 2007
Posts: 28
Likes: 0
From: IL
He also bought a new PCM from the guy that tuned the car. Did the same thing as with the old PCM. I think somehow the tune is f'd up, cause all the tuner did was copy the tune into the new PCM and not re-tune it and it does the same thing.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
TECH Apprentice
Joined: Oct 2008
Posts: 330
Likes: 0
From: Wheaton, Illinois
Also is there a way to look at my tune with HP Tuners? To see if its messed up somewhere?
EFI Live is just another tuning software with basically the same capabilities as HP Tuners. If you have the tune file, just post it up on the EFI Live forum and tell them your problem, hopefully they can help you out.
Thread Starter
TECH Apprentice
Joined: Oct 2008
Posts: 330
Likes: 0
From: Wheaton, Illinois
Ok cool, thanks for your help. I called the guy that tuned my car for me and hes going to email me the tune so that i can post it, so you guys can take a look at it for me.
It's not in the tune. The 02 reading 440-450 mv is an open circuit. Where/how are you taking your resistance readings? Are you only checking to the connector, or are you checking past the last connector to the wire ON the 02 sensor?
How did you replace the wire? Did you butt connect a wire in, or replace the actual pin in the ECM connector, as well as the pin in the 02 connector?
It's probably just the female pin in the 02 connector that's spread open. See it all the time.
How did you replace the wire? Did you butt connect a wire in, or replace the actual pin in the ECM connector, as well as the pin in the 02 connector?
It's probably just the female pin in the 02 connector that's spread open. See it all the time.
Thread Starter
TECH Apprentice
Joined: Oct 2008
Posts: 330
Likes: 0
From: Wheaton, Illinois
It's not in the tune. The 02 reading 440-450 mv is an open circuit. Where/how are you taking your resistance readings? Are you only checking to the connector, or are you checking past the last connector to the wire ON the 02 sensor?
How did you replace the wire? Did you butt connect a wire in, or replace the actual pin in the ECM connector, as well as the pin in the 02 connector?
It's probably just the female pin in the 02 connector that's spread open. See it all the time.
How did you replace the wire? Did you butt connect a wire in, or replace the actual pin in the ECM connector, as well as the pin in the 02 connector?
It's probably just the female pin in the 02 connector that's spread open. See it all the time.
As for checking the resistance of the wires i used a multimeter.
Launching!
Joined: Feb 2004
Posts: 260
Likes: 0
[QUOTE=edcmat-l1;11249439]It's not in the tune. The 02 reading 440-450 mv is an open circuit. [QUOTE]
That value (440-460mv) is what both of my O2's read when I key on before starting the engine.
Both of mine work fine.
That value (440-460mv) is what both of my O2's read when I key on before starting the engine.
Both of mine work fine.
Thread Starter
TECH Apprentice
Joined: Oct 2008
Posts: 330
Likes: 0
From: Wheaton, Illinois
[QUOTE=Sid447;11265381][QUOTE=edcmat-l1;11249439]It's not in the tune. The 02 reading 440-450 mv is an open circuit.
That value (440-460mv) is what both of my O2's read when I key on before starting the engine.
Both of mine work fine. That reading is with the car running, and heated up. Get the same reading after 20 minutes of driving.
That value (440-460mv) is what both of my O2's read when I key on before starting the engine.
Both of mine work fine.
Launching!
Joined: Feb 2004
Posts: 260
Likes: 0
[QUOTE=ws6fitz;11266959][QUOTE=Sid447;11265381] No response from them then.
I'll have a look at your tune when you post it.
I'll have a look at your tune when you post it.
not all o2 sensors are made correctly,, i have ran into this 3 times, gm pcm needs the grounds for the o2 sensor to actually be grounded inside the sensor to the case of the sensor so the pcm can use it as a ground,, many of the aftermarket o2 sensors are not grounded from the actual wires to the case of the sensor inside
all 3 times i fixed the issue easy by splicing the heater ground and the sensor low(ground) together
take a factory o2 sensor and check for continuity from the sensor low(ground) to the case of the sensor if you have continuity your ok if not you need to splice the 2 together, make sure you are checking the sensor low and not the heater circuit ground
all 3 times i fixed the issue easy by splicing the heater ground and the sensor low(ground) together
take a factory o2 sensor and check for continuity from the sensor low(ground) to the case of the sensor if you have continuity your ok if not you need to splice the 2 together, make sure you are checking the sensor low and not the heater circuit ground