throwing codes p0151, p0300
06-19-2006, 04:33 PM
#12
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Ok after checking the wiring for the O2 sensor during my lunch break ..and resetting the codes...the only code that pops up now is the p0300 code.
I will fiddle with it more later anyone else have advise?
I will fiddle with it more later anyone else have advise?
06-19-2006, 04:46 PM
#13
Originally Posted by 86MC_SS
Ok after checking the wiring for the O2 sensor during my lunch break ..and resetting the codes...the only code that pops up now is the p0300 code.
I will fiddle with it more later anyone else have advise?
I will fiddle with it more later anyone else have advise?
I see you have replaced the wires, how about the plugs?
06-19-2006, 05:15 PM
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Originally Posted by BlownChevy
I see you have replaced the wires, how about the plugs?
06-20-2006, 03:09 PM
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EDIT:
So I checked all spark plugs, wires, coil packs, and injectors. I checked for vacuum leaks and any loose connections and nothing. I used the old school water hose across the intake and vacuum source technique on different areas to check for vacuum leaks and the truck had none.
To check the coils I unplugged each plug wire from a coil one at a time while the truck was at idle and they all had spark.
To check the injectors I unplugged each injector one at aa time while the truck was running at idle and it really had no affect on the truck. It was still missing and not firing properly. Is that normal?
I am at a loss...
So I checked all spark plugs, wires, coil packs, and injectors. I checked for vacuum leaks and any loose connections and nothing. I used the old school water hose across the intake and vacuum source technique on different areas to check for vacuum leaks and the truck had none.
To check the coils I unplugged each plug wire from a coil one at a time while the truck was at idle and they all had spark.
To check the injectors I unplugged each injector one at aa time while the truck was running at idle and it really had no affect on the truck. It was still missing and not firing properly. Is that normal?
I am at a loss...
Last edited by 86MC_SS; 06-20-2006 at 03:19 PM.
06-21-2006, 09:57 AM
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So my O2 sensor code came back on...
p0151 - O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
After lots of reading and searching and gathering as much info as possible. I retraced my steps to what started all this. At first I only had one code for...
p0151 - O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
...then I bought a new bosch O2 sensor to "fix" this problem. After replaced the bad O2 sensor with the bosch one I reset my computer and all was fine for a couple hours. The code came back on after a while and things got worse. I had more codes for...
p0300 - Random/Multiple Cylinder Misfire Detected
P1153 - Bank 2 Fuel Control Shifted Lean
....plus my O2 sensor code now as well. As you read I checked plugs and wires and everything else that would cause a random misire. Remembering that I read someone moved there post cat O2 sensors to the front of the cat , I had nothing to lose and tried it. I cleaned off my "bad" O2 sensor and stuck it after the cat...so basically I swapped O2 sensors. I reset the computer and turned the truck on and drove it for almost an hour and no more codes. The bosch sensor was junk and caused more headaches then needed. I will be buying GM O2 sensors and replacing both primary O2 sensors next week.
BOSCH SUCKS!!!
p0151 - O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
After lots of reading and searching and gathering as much info as possible. I retraced my steps to what started all this. At first I only had one code for...
p0151 - O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
...then I bought a new bosch O2 sensor to "fix" this problem. After replaced the bad O2 sensor with the bosch one I reset my computer and all was fine for a couple hours. The code came back on after a while and things got worse. I had more codes for...
p0300 - Random/Multiple Cylinder Misfire Detected
P1153 - Bank 2 Fuel Control Shifted Lean
....plus my O2 sensor code now as well. As you read I checked plugs and wires and everything else that would cause a random misire. Remembering that I read someone moved there post cat O2 sensors to the front of the cat , I had nothing to lose and tried it. I cleaned off my "bad" O2 sensor and stuck it after the cat...so basically I swapped O2 sensors. I reset the computer and turned the truck on and drove it for almost an hour and no more codes. The bosch sensor was junk and caused more headaches then needed. I will be buying GM O2 sensors and replacing both primary O2 sensors next week.
BOSCH SUCKS!!!
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