P0133 code race gas

[james432]

Can the P0133 code be caused by me mixxing race gas and 93?i also have 100 shot too...oh i have shorty headers too...

thanks,james

 

[06iornhorse]

simple answer is yes 116 did that and killed my o2s mixed with 93 only after one time tank was empty and mixed 2 gallons of 116 and 2 gallons of 93 and that was all they wrote code showed up a week later. leaded fuel kills o2s stick with unleaded 104

 

[james432]

okay,thanks

 

[Hawgman]

I occasionally get that running 93 and 104 unleaded.

 

[james432]

i cleard that code like 5 times today and that thing runs like shit

 

[james432]

so dose this make it run rich it seems like it is

 

[Fallenauthority]

During normal cruising it will make the car rich, when the O2's fail the PCM automatically goes to a default rich map since it cant read the sensors, better to run rich than lean.
Buy some new O2's and if you want, keep the old ones and throw them in before you put race gas in and go to the track that way you dont kill your new O2's

 

[lito]

Have you done any work in the sensors/sensors harness/connectors area lately?

 

[james432]

no work to any sensors/sensors harness/connectors area

 

[lito]

I asked because leaded gas damages sensors shortening their life a lot but is not like one single tank and they are history.

 

[james432]

yeah i ran race gas a few times...i just have 93 in there now.....

 

[lito]

Ok, for some reason I thought about a single leaded fuel use, maybe your sensors are toast then. (only replace with ford bought ones that are NTK)

 

[james432]

Okay I have a full tank of 93 I drove the car all day and now I'm getting a p0171 code but no p0133 code wow now wut

 

[lito]

Different code, same sensor (upstream passenger) I would check the wiring just in case but maybe the sensor is toast.

Swap the front sensors and see is the codes translates into driver's (174, 153 for example)

 

[james432]

Oh it the pas side?I thought the code was the upper driver the on in the header..

 

[lito]

Nope, upper passenger.

 

[KITT]

I run 110 all the time and never seen a code in 2 yrs!?

 

[james432]

I put a new 02 in and its been fine all night