problem after header install. O2 sensors?
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
problem after header install. O2 sensors?
Just had my headers installed on thursday. No rear O2 sensors (will be deleted by my tuner on monday)
Code P0132 (front O2 sensors)
The car will start okay and run smooth for about 30 seconds to 2 minutes. THen it will bog down to almost no power and try to die. Then about 2-3 minutes later it will seem to "fix" itself and run smooth again.
I"ll have it in the air tomorrow to have a look see. Does this sound like a bad connecion/burnt wires on the front O2 sensors or should i start looking for replacements?
Also about how long do O2 sensors last. I think mine are original parts and haven't been replaced ever.
Code P0132 (front O2 sensors)
The car will start okay and run smooth for about 30 seconds to 2 minutes. THen it will bog down to almost no power and try to die. Then about 2-3 minutes later it will seem to "fix" itself and run smooth again.
I"ll have it in the air tomorrow to have a look see. Does this sound like a bad connecion/burnt wires on the front O2 sensors or should i start looking for replacements?
Also about how long do O2 sensors last. I think mine are original parts and haven't been replaced ever.
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
rear sensors were completely removed. Where is the connection for thhe front O2 sensors? Can it be more easily accessed from under the car or under the hood?
Advanced
Joined: Oct 2007
Posts: 90
Likes: 30
From: Berthoud, CO
The O2 plugs are located on each side of the engine compartment right beside the headers. You can get to them from the engine bay fairly easily. I think the the plugs for the fronts are the larger of the two, and are below the plugs for the rears.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
That O2 may have been damaged or the wire may be kinked also. If damaged just replace them.
Whatever the cause it is fixable.
Good luck
Last edited by SLPRC5; Dec 29, 2007 at 01:13 AM.
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Burning Brakes
Joined: Jan 2006
Posts: 1,170
Likes: 27
From: Magnolia Greens NC
Sounds Like...
....(your headers installer) may have reversed the front right & left 02 sensor connections when they reconnected them...it's easy to do, as they do hook-up in a reversed arrangement from what appears is correct hook up arrangement ...this causes the PCM to do some weird things trying to correct this situation.
...of course, if this is not the case, as in Mission Impossible: "the Secretary will disavow any knowledge of this advice"....
...of course, if this is not the case, as in Mission Impossible: "the Secretary will disavow any knowledge of this advice"....
Burning Brakes
Joined: Nov 2002
Posts: 1,018
Likes: 52
From: Deltona Fl.
Racer
Joined: Mar 2003
Posts: 440
Likes: 7
From: Willow Park Texas
You can not mix the front and rear O2 sensors as they are two different type of plugs. The fronts are flat and the rears are square. As far as crossing the left and right, this would be real hard to do for the fronts but the rears can be crossed easily. The left rear plugs into the right side of the engine. This is due to the way the rear O2 sensors are angled at the back.
You might just have a bad O2 sensor. Try reversing the two and see if the problem moves to the other side. If it does not, check the plug and the wiring to see if it is damaged due to the header installed. The 12v heater wire might be shorted to the sensor wire thus giving you a high reading.
You can always sell you car and buy a new one with out the problem. I have heard that this works every time! But where is the fun in that.
Reb
You might just have a bad O2 sensor. Try reversing the two and see if the problem moves to the other side. If it does not, check the plug and the wiring to see if it is damaged due to the header installed. The 12v heater wire might be shorted to the sensor wire thus giving you a high reading.
You can always sell you car and buy a new one with out the problem. I have heard that this works every time! But where is the fun in that.
Reb
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
....(your headers installer) may have reversed the front right & left 02 sensor connections when they reconnected them...it's easy to do, as they do hook-up in a reversed arrangement from what appears is correct hook up arrangement ...this causes the PCM to do some weird things trying to correct this situation.
...of course, if this is not the case, as in Mission Impossible: "the Secretary will disavow any knowledge of this advice"....
...of course, if this is not the case, as in Mission Impossible: "the Secretary will disavow any knowledge of this advice"....
a) O2 sensors are hooked up in the correct L/R, R/L (crossed) setup
b) the drivers side sensor was snapped in place, but the plastic lock was not in place.
c) no wires appeared to be crushed, bent or burnt.
Test drive yeilded the same results.
I'm betting that this is because the Rear O2's haven't been tuned out yet. I'll be getting that taken care of on monday. Will post results then.
Last edited by TheRadioFlyer97; Dec 29, 2007 at 04:37 PM.
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Update:
Scan tool revieled that BOTH O2 sensors had gone bad. After removing them I saw why. They were ORIGINAL sensors and had never been replaced since the car was built. I'm not sure the average life of an O2 sensor but i'm willing to bet it's less than 10 years/110K miles. My tuner has me running on baseline fuel maps until i bring it back this afternoon.
FYI: Oreilly's carries the front O2 sensors for $53 now.
Scan tool revieled that BOTH O2 sensors had gone bad. After removing them I saw why. They were ORIGINAL sensors and had never been replaced since the car was built. I'm not sure the average life of an O2 sensor but i'm willing to bet it's less than 10 years/110K miles. My tuner has me running on baseline fuel maps until i bring it back this afternoon.
FYI: Oreilly's carries the front O2 sensors for $53 now.
Melting Slicks
Joined: May 2004
Posts: 2,502
Likes: 4
From: cincinnati ohio
Primary sensors are NOT supposed to be crossed....Left header collector primary 02 sensor goes to left frame rail (bank 1), right header collector primary 02 sensor goes to right frame rail (bank 2). Fuel integrator will drive one side high and one side low and the computer will be unable to trim fuel correctly obviously......Just fixed this problem for someone else over the phone a month ago..............
Only the secondary sensors are supposed to cross left to right (the ones that you had removed)
Only the secondary sensors are supposed to cross left to right (the ones that you had removed)
Last edited by RAFTRACER; Jan 2, 2008 at 04:19 PM.
Instructor
Joined: Jun 2006
Posts: 136
Likes: 0
From: Ringgold GA
Front connections do not cross. Are the bungs further back than what they were on your stock pipes? Long tubes I installed recommended using the rear O2 sensors (removed from stock pipes) in the headers. Something about the fronts not working well because they were further down stream. It requires a pigtail adapter because the plugs are different.
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Primary sensors are NOT supposed to be crossed....Left header collector primary 02 sensor goes to left frame rail (bank 1), right header collector primary 02 sensor goes to right frame rail (bank 2). Fuel integrator will drive one side high and one side low and the computer will be unable to trim fuel correctly obviously......Just fixed this problem for someone else over the phone a month ago..............
Only the secondary sensors are supposed to cross left to right (the ones that you had removed)
Only the secondary sensors are supposed to cross left to right (the ones that you had removed)
Melting Slicks
Joined: May 2004
Posts: 2,502
Likes: 4
From: cincinnati ohio
The post catayst O2 sensors are crossed in the vehicle and the primaries are not. Look at the factory manifolds to see and confirm that the primaries are not crossed.
You wont be the first bussy and you wont be the last to make that mistake...... I was wrong , I fixed this same problem for two people in the last month....exactly the same thing.
At least you have two brand new 02 sensors now .
You wont be the first bussy and you wont be the last to make that mistake...... I was wrong , I fixed this same problem for two people in the last month....exactly the same thing.
At least you have two brand new 02 sensors now .
Thread Starter
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
The post catayst O2 sensors are crossed in the vehicle and the primaries are not. Look at the factory manifolds to see and confirm that the primaries are not crossed.
You wont be the first bussy and you wont be the last to make that mistake...... I was wrong , I fixed this same problem for two people in the last month....exactly the same thing.
At least you have two brand new 02 sensors now .
You wont be the first bussy and you wont be the last to make that mistake...... I was wrong , I fixed this same problem for two people in the last month....exactly the same thing.
At least you have two brand new 02 sensors now .