Well i finally degreased the nastiness that was my engine bay today and now i have no A/F readings.. Is it possible i killed my O2 sensor?

 

Probably not.

 

well what could be the problem then? it was working fine before today...

 

did you check all the wiring connections? is it possible the wrie is grounding out on something now?

 

Somehow water is in the connector. Pull it apart, blow it dry.

My guess is that you may have used a pressure washer? If so, don't do that. It forces water into everywhere it should not be.

 

^^well it came back on today.. but now it reads REALLY lean.. As a matter of fact, today i noticed it acts just like it does when it is reading correctly, but on the opposite side of the meter..

Oh and i didnt pressure wash it btw.. but i did use a nozzle on the jet stream option.. should i still not do that?

 

Its not possible i screwed up any of my injectors is it? I just need to know whether i should be worried or not. Is there a way to reset it?

 

Sounds like you just need to dry the engine completely. Pull each harness connector and check for water.

 

so you pressure washed it

 

^^ Um no.. i did not use a "Pressure Washer" therefore it is not pressure washing.. i used a setting on the hose that had a little more pressure than the rest. If it doesn't help the situation then why bother saying it?

my A/F readings are slowly becoming more stoich. I guess i can pull apart all the connectors but its been like 3 days now wouldn't the engine heat have done that job already?

 

the jet setting on most nozzles is enough to force water into most elec connectors and some vapor could still be in the connectors which returns to liquid when it cools down keeping your problem around

couldn't hurt just go through one by one bound to find some water there

 

that sounds right.. but i shouldn't be worried right? Cuz i kinda have no choice but to drive the car. I mean the car doesn't feel like its running different and i can't find any reason other than the water screwing with the connectors as to why my A/F reading are off. So i guess i should be a little more careful next time i degrease? Cuz i need to do it again lol.

I hate to sound like a noob.. but where exactly are the connectors i should be looking for?

 

ok so i checked out all the connectors and they were mostly dry.. I am still getting readings that are off. I mean i understand water shorting it out and it not working.. but i don't see what could be throwing off the readings now that it's working again. What should my next step be?

 

Who made this afr gauge/unit?

 

It's an Autometer.. I would say about 4 years old

 

So I am still having this problem with my A/F readings.. The pattern is just like the old pattern in relation to % throttle, but reading lean to stoich instead of stoich to rich.. any other suggestions? Fuel filter, injector problem maybe? would i feel a difference in how the car ran if it was really running that lean? I did accidentally leave a plastic bag over the air filter when i started it back up for a few seconds but then i remembered it was there because the car shut off.. Don't know if that could have screwed anything up but at this point i am clueless.

 

Today i drove the car and the readings richened up a bit.. for the first time since it started having problems it read like the first bar of rich under boost.. so confused lol

 

This **** is pissing me off.. I finally got back to almost normal readings.. and now they are back to stoich. Is the gauge on the fritz or are my injectors faltering?

 

Questions...

Is this a narrowband connected to the stock sensor or a wideband? If it's a narrowband, I'd guess something is wrong with the connection to the sensor wire.

Another thing is that many narrowband sensors "breath" through the wire. If you somehow got water in there, the sensor is junk.

 

Try reset your ecu. It may seem stupid but it worked for me a while back. Especially if the engine shut it's self off.

 

It's a narrowband.. i would love to invest in a wideband. I guess i can try resetting the ECU if not i need a new sensor i guess. I just want to be sure those are not real readings cuz then i have a bigger problem

 

There is no way to "reset" the FC's ECU because there is nothing inside to be reset.

Sounds like a bad sensor.

 

I have heard that an exhast tempurature gauge is actually a better investment than a narrowband.. Is this a valid point?

 

It depends on what you are using it for.

If you intend to tune the car, then a wideband, EGT or both is the best choice.

But with a narrowband and an EGT you can get a good tune. The trick is that you have to know how to read an EGT probe.