2002 Dodge Dakota sputtering at stop or low idle

Ok if you would get me the code numbers the P? Codes. If you don't have a code reader then call around to your local parts stores and see if one will do a free scan and have it scanned. Write the codes down and then have them cleared. Get back to me with the pressent codes and I will look them up and see what should be checked out. Thanks.

Ok P0031 is 1/1 O2 sensor circuit low. P0138 is 1/2 O2 sensor shorted to voltage. So I need to know if you have a digital multi meter and if you are willing to do some testing to see what is going on? Do you have a code reader handy? Get back to me so we can run some tests. We will tackle this one code at a time ok.

OK lets check the auto shut down relay. What I need you to do is remove it (with key off) and check ohms between term 85 and 86 it should be 70 to 80 ohms if not then replace it. The relay is in the underhood fuse relay box. Let me know how it goes.

It should have been next to the fuel pump relay.

Ok lets do an O2 sensor test. I would like you to do this with all the O2 sensors even the new ones ok. Now I have included a pic too. What you need to do is unplug the O2 sensor that you are testing and then ohm the sensor between term 2 and 3 or 2 and ground. Ohms should read 3.3 to 4.1 on the upstreams and 4.0 to 5.0 on the down stream ones. If they do not read this then replace the ones that don't. If this is good then you will need to check that they are getting voltage form the auto shutdown relay. This is done by again unpluging them and checking term 1 on the wire harness not the sensor and then turn the key on engine off it should read 10 volts or more. Let me know what you find here and we will take it from there. Don't forget to plug the sensors back in after the tests are done. I would turn the key off between test on the sensor as to not drain the batt. Get back to me with what you find.