Oxygen sensors

[lynnwells]

Hello forum, could somebody please provide some clarification for me here? I have a 1999 2500 v10 CA exhaust. I just recently replaced all 4 oxygen sensors and ever since have had nothing but problems. In the service manual it says there’s 2 upstream and a pre and post catalyst sensor. The truck wiring has plugs for 3 (grey plugs/upstream?) and 1(black plug/downstream?). So, is there a difference in the sensors? I ordered 3 up and 1 downstream, should I have worded my order different and would I have gotten a different sensor if I did?
Also, I noticed that one of the sensor wires on the truck side have some breakage just before the plug. Is it possible to fix the plug? I know you’re not supposed to solder it so does that mean it just must be replaced? And lastly, is it important that all four sensors be the same brand? How much of an impact does manufacturer make when it comes to o2 sensors. Thanks in advance and I hope these aren’t completely stupid questions. Dig this forum, so many knowledgeable people on and I appreciate you all.

 

[vdemarco]

In my old (don't have anymore) 98 durango, i just soldered/crimped the wires together. One of the connectors to the o2 sensor was completely melted and i couldn't get it apart. Since it was an old truck i just cut the connectors and soldered/crimped them.

If i was going to do that again, i just just go to pick/pull and cut off some of the connectors on another truck and solder those on, so you can just plug them in. (or buy them all new like that)

 

[lynnwells]

Thank you

 

[scott lass 18]

yes mine maybe bad so found out the two upstream are completely different then bottom stream and well mess up if done wrong in running ur engine ok ! how did u know yours were bad ? mine wont show up working on my pcm ? wow 350.00 to replace to pass my smog maybe ? yuck !