Chrysler 300C HEMI AWD 2005, maintenance up to date. 80K miles.
Since the dealer replaced all 4 O2 sensors the car bucks and shudders, misfire when in lock up and slow acceleration.
Also at idle it doesn't feel right.
During changing out the O2 sensors the mechanic got a code open circuit and he reversed two wires from one sensor.
This was quite strange, because it should be plug and play. Old ones out, new Mopar ones in.
And then the issues started, bucking, shudder, misfire. Almost every sensor has been replaced.
Also sparkplugs and coils, plugs were not wet or white, just like they should be.
Even the PCM was changed, but still with the O2 wires reversed on one sensor. When the new PCM was installed it ran fine the first minutes..... untill warm.
Is it possible that because of the reversed wires the PCM got a circuit problem and PCM gives me these problems?
On the O2 sensor 1-1, i see a reference voltage with KOEO of 4.78V, while the other 3 are 4.98V and 5V.
How can i solve this? I saw a TSB with repair guide for O2 connectors model 2005-2006.
Could this be the issue? Also because of the open circuit warning.
The downstream O2 sensors are also pretty low voltage wise, they generate around 2.5V at idle and goes up when driving, but they can also drop from 3.3V to 2.9V and then go back.
Should the downstream sensor stay at the same voltage? Or can they swing a little bit?
Last time they changed all O2 sensors again, and also got the wiring back to normal, ofcourse same problem.
Maybe a new PCM could solve things now together with new connectors for O2 sensor 1-1?
Well, maybe someone knows the solution. Many thanks for helping.
Since the dealer replaced all 4 O2 sensors the car bucks and shudders, misfire when in lock up and slow acceleration.
Also at idle it doesn't feel right.
During changing out the O2 sensors the mechanic got a code open circuit and he reversed two wires from one sensor.
This was quite strange, because it should be plug and play. Old ones out, new Mopar ones in.
And then the issues started, bucking, shudder, misfire. Almost every sensor has been replaced.
Also sparkplugs and coils, plugs were not wet or white, just like they should be.
Even the PCM was changed, but still with the O2 wires reversed on one sensor. When the new PCM was installed it ran fine the first minutes..... untill warm.
Is it possible that because of the reversed wires the PCM got a circuit problem and PCM gives me these problems?
On the O2 sensor 1-1, i see a reference voltage with KOEO of 4.78V, while the other 3 are 4.98V and 5V.
How can i solve this? I saw a TSB with repair guide for O2 connectors model 2005-2006.
Could this be the issue? Also because of the open circuit warning.
The downstream O2 sensors are also pretty low voltage wise, they generate around 2.5V at idle and goes up when driving, but they can also drop from 3.3V to 2.9V and then go back.
Should the downstream sensor stay at the same voltage? Or can they swing a little bit?
Last time they changed all O2 sensors again, and also got the wiring back to normal, ofcourse same problem.
Maybe a new PCM could solve things now together with new connectors for O2 sensor 1-1?
Well, maybe someone knows the solution. Many thanks for helping.