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02 sensors

  1. D

    Fuel injector replacement leads to running rich

    Hey everybody, first time post! I've been fixing up my fiances explorer and the most recent surprise has been fuel injector 2 has died (p0202, p0302), open inside injector and I have good reading from plug. Decided to buy a full set on Amazon (sorry, have a smoke or a joint if it bothers you...
  2. Ninjakiwi8

    Trouble codes after engine building!

    Hey everyone, so I have a little bit of a problem. Recently I pulled out my 99 4.0 cologne ohv and rebuilt using 422 comp can, different lifters, ect ect. Anyways the build went fine and we installed back into the truck. Connected all the wiring harness back to the 5R55e trans. Well I've driven...
  3. 2

    Bad 02 Sensors?

    I suspect that my 02 sensors may not be working. I cleaned my IAC valve a few months back and I used RTV silicone gasket maker...yeah, I read a thread on here that said silicone is really bad for the 02 sensors. I don't have a very good idle at the moment, not bad just not right. I've already...
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