👆😂🤣😂 That's the truth of I ever heard it. Somebody built this truck and it may 5ake me a while but I promise you I will fix it if I have to turn every bolt on it. 👍💪

 

Ok long and short trim is reading 0.0, intake air temp is 163 (its 86 here right now), o2 b1s1 is 0.880, and other o2 is 1.000. All Spanish to me?

 

If you're "flooding", the O2s SHOULD read high like they are. That said, while your trims r the "tell alls" (they appear to be right down the line, which makes no sense/IAT looks acceptable too), r the O2s both changing (between .1 n 1 volts) or remaining constant? IF the O2 #s remain high, then they're tattling on your "rich" condition...BUTT!!!...your short term fuel trim should, at the very least, be commanding a negative number in order to lean out the excessive fuel in the exhaust. I guess I should have added, you only care about their values when your electro-mechanical marvel is at normal operating temp. Check your values at idle, 1500 n 2500 RPM. No magic at those numbers, just 3 different loads/conditions. U can do this n ur driveway. I'm guessin' the other O2 listed is the downstream, do you have a dual cat exhaust system? If you do, you should have 4 O2 listings. They'll be O2B1S1, O2B2S1 (dual cat) for upstream n O2B1S2, O2B2S2 (dual cat) for the downstreams. If ur O2 #s remain high, then unplug the downstream O2 n see if anything changes. Yes, I remember the CEL codes, but you stated you've been all thru that circuit from the injectors to the ECM.

 

Ok, I only have 1 cat, and I can't get it to idle, I have to pedal it around 12 or 1500 rpms or it will just die.

 

If you have the original ECM, put it back in. Make sure the battery is unhooked. But try unplugging the downstream O2 n look for any change first, cause both O2s are showing a rich condition and the ECM knows this and is doing nothing to correct it based on your trim numbers.

 

Got it, I still have the original ECM so I'll do that soon as I get back. Also I've heard some o2 sensors aren't as good. Since the shop put the new precat o2 sensor in, are there markings or anything to determine if my new o2 sensor is Bosch? I realize this may not be the problem since this all started before it was changed, but if the original didn't work either, is it possible it's just o2 senor troubles? Anyway, I'll get back around lunchtime with some new info, and thanks again, I really appreciate the help.

 

Yeah, NTK is supposed to be best or Denso.

 

I got NTKs from rock auto, no problems.

 

Ok I'll try to figure out what brand of o2 they used, 🤞 its Bosch.

 

I just put NTKs in my truck no problem