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oxygen sensor issue (new issue trust me)

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Old Feb 13, 2011 | 06:28 AM
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oxygen sensor issue (new issue trust me)

Okay so pre connector on the o2 sensor side it got ripped off somehow (I dont know how) so anyways I can not locate the connector end. Can somebody get me some pictures of where the wire should be running. I would greatly appreciate it@!
Old Feb 13, 2011 | 08:18 AM
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Okay so I figured that sensor has not been functioning for a while so I just replaced the one at the front of the car. Easy install but as soon as it got warmed up again did the same ****. If I VERY lightly use the throttle it will go decent (can't detect the misfire) if I go anything past until about 4000 rpms it will misfire like crazy but above 4k it seems to do okay.

So I am thinking the other oxygen sensor needs fixing desperately and perhaps a coil pack?
Old Feb 13, 2011 | 10:20 AM
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Originally Posted by ken85
Okay so I figured that sensor has not been functioning for a while so I just replaced the one at the front of the car. Easy install but as soon as it got warmed up again did the same ****. If I VERY lightly use the throttle it will go decent (can't detect the misfire) if I go anything past until about 4000 rpms it will misfire like crazy but above 4k it seems to do okay.

So I am thinking the other oxygen sensor needs fixing desperately and perhaps a coil pack?
Coilpack should be addressed first before the oxygen sensor if it is the coilpack. Even my car threw me a flashing CEL on the highway and had the computer already hooked up and it was a cylinder 4 misfire with the O2 code. After testing, the fuel injector died and after replacing the injector, both codes haven't come back since.
Old Feb 13, 2011 | 10:28 AM
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okay but I dont even have a misfire code (read codes) I have a 10 - 8 and a 3 -4 (I think) so knock sensor and evap thing code...


I guess my question is: Since the car is not misfiring at all when it's cold or in neutral and park (With no load) I kind of threw out the coil pack idea and focused on the o2 sensor
Old Feb 13, 2011 | 10:30 AM
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Originally Posted by ken85
okay but I dont even have a misfire code (read codes) I have a 10 - 8 and a 3 -4 (I think) so knock sensor and evap thing code...


I guess my question is: Since the car is not misfiring at all when it's cold or in neutral and park (With no load) I kind of threw out the coil pack idea and focused on the o2 sensor
If you are getting a jerk/hesitation when under load (in D), then one of your coilpacks are on the way out. Find that coilpack first...O2 sensor will not give you a misfire under load. The coilpack is just not misfiring enough for the CEL to detect it.
Old Feb 13, 2011 | 10:47 AM
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Originally Posted by ken85
okay but I dont even have a misfire code (read codes) I have a 10 - 8 and a 3 -4 (I think) so knock sensor and evap thing code...


I guess my question is: Since the car is not misfiring at all when it's cold or in neutral and park (With no load) I kind of threw out the coil pack idea and focused on the o2 sensor
Coil packs can work fine at idle with no load. Under load they will not, due to higher cylinder pressure = resistance.
Old Feb 13, 2011 | 10:52 AM
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Okay thanks for explaining it to me , it takes an extra minute for me to understand lol! Anywho, tomorrow I will unplug the packs and see which one it is. Thanks again
Old Feb 14, 2011 | 09:43 AM
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Okay so I tried testing all the coil packs.. The first and second prong in the connector part (of the pack) all read 0.00 ohms.. Is there another way to test these things?
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