Oxygen sensor help please
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Joined: Jul 2017
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Oxygen sensor help please
Ok so I have been reading all these posts and threads in this and other dodge forums and still haven't found anything that helps me in my current situation.
My mother has a 2001 Dodge Dakota SLT w/4.7. The PCM kept overheating. It would get hot and you could not start truck again until it cooled down. I bought a Mopar replacement PCM installed and had it flashed. Truck ran great. Got a miss fire code about 6 months later. Replaced plugs, coil packs, injectors TPS and nothing worked. Finally pulled bank 2 head and found #8 valve spring had snapped in two. Pulled both heads and them rebuilt. reinstalled everything. Truck runs great now...Except.
No I get multiple codes that I can not get to clear in order to get it inspected. I get P0138 and P0141. I have replaced Bank 1 Sensor 2 3 times thinking maybe I bought bad sensor. Replaced Bank 1 Sensor 1 and Cat. Here is where it gets weird. I get both P0138 and P0141 codes. when I clear them with my OBDII I get no codes as MIL reset then I will get 3 codes (P0141, P0442 and P0455) I know the 400 codes are small and large Evap leak codes. Clear codes and when MIL resets I get the original 2 codes. Back and forth. I have replaced vacuum hoses and tested for vacuum leaks but come up with nothing.
Not Sure why the codes keep changing from one reset to the next. Completely confused on issue and have replaced close to $1000 worth of stuff so far. Any ideas on what I might be over looking?
Thanks.
My mother has a 2001 Dodge Dakota SLT w/4.7. The PCM kept overheating. It would get hot and you could not start truck again until it cooled down. I bought a Mopar replacement PCM installed and had it flashed. Truck ran great. Got a miss fire code about 6 months later. Replaced plugs, coil packs, injectors TPS and nothing worked. Finally pulled bank 2 head and found #8 valve spring had snapped in two. Pulled both heads and them rebuilt. reinstalled everything. Truck runs great now...Except.
No I get multiple codes that I can not get to clear in order to get it inspected. I get P0138 and P0141. I have replaced Bank 1 Sensor 2 3 times thinking maybe I bought bad sensor. Replaced Bank 1 Sensor 1 and Cat. Here is where it gets weird. I get both P0138 and P0141 codes. when I clear them with my OBDII I get no codes as MIL reset then I will get 3 codes (P0141, P0442 and P0455) I know the 400 codes are small and large Evap leak codes. Clear codes and when MIL resets I get the original 2 codes. Back and forth. I have replaced vacuum hoses and tested for vacuum leaks but come up with nothing.
Not Sure why the codes keep changing from one reset to the next. Completely confused on issue and have replaced close to $1000 worth of stuff so far. Any ideas on what I might be over looking?
Thanks.
Amateur
Joined: Mar 2014
Posts: 34
Likes: 0
From: Danville, IN
Ok so I have been reading all these posts and threads in this and other dodge forums and still haven't found anything that helps me in my current situation.
My mother has a 2001 Dodge Dakota SLT w/4.7. The PCM kept overheating. It would get hot and you could not start truck again until it cooled down. I bought a Mopar replacement PCM installed and had it flashed. Truck ran great. Got a miss fire code about 6 months later. Replaced plugs, coil packs, injectors TPS and nothing worked. Finally pulled bank 2 head and found #8 valve spring had snapped in two. Pulled both heads and them rebuilt. reinstalled everything. Truck runs great now...Except.
No I get multiple codes that I can not get to clear in order to get it inspected. I get P0138 and P0141. I have replaced Bank 1 Sensor 2 3 times thinking maybe I bought bad sensor. Replaced Bank 1 Sensor 1 and Cat. Here is where it gets weird. I get both P0138 and P0141 codes. when I clear them with my OBDII I get no codes as MIL reset then I will get 3 codes (P0141, P0442 and P0455) I know the 400 codes are small and large Evap leak codes. Clear codes and when MIL resets I get the original 2 codes. Back and forth. I have replaced vacuum hoses and tested for vacuum leaks but come up with nothing.
Not Sure why the codes keep changing from one reset to the next. Completely confused on issue and have replaced close to $1000 worth of stuff so far. Any ideas on what I might be over looking?
Thanks.
My mother has a 2001 Dodge Dakota SLT w/4.7. The PCM kept overheating. It would get hot and you could not start truck again until it cooled down. I bought a Mopar replacement PCM installed and had it flashed. Truck ran great. Got a miss fire code about 6 months later. Replaced plugs, coil packs, injectors TPS and nothing worked. Finally pulled bank 2 head and found #8 valve spring had snapped in two. Pulled both heads and them rebuilt. reinstalled everything. Truck runs great now...Except.
No I get multiple codes that I can not get to clear in order to get it inspected. I get P0138 and P0141. I have replaced Bank 1 Sensor 2 3 times thinking maybe I bought bad sensor. Replaced Bank 1 Sensor 1 and Cat. Here is where it gets weird. I get both P0138 and P0141 codes. when I clear them with my OBDII I get no codes as MIL reset then I will get 3 codes (P0141, P0442 and P0455) I know the 400 codes are small and large Evap leak codes. Clear codes and when MIL resets I get the original 2 codes. Back and forth. I have replaced vacuum hoses and tested for vacuum leaks but come up with nothing.
Not Sure why the codes keep changing from one reset to the next. Completely confused on issue and have replaced close to $1000 worth of stuff so far. Any ideas on what I might be over looking?
Thanks.