Bad first day out

[98mustanggtkid]

:crying: so today was the first day i had my car out since winter, started it up started up real nice started driving fine no problems. get 3/4 of the way top school and as i gave it gas kinda miss fired alittle little worried now, but make it to school get to school the car now sounds cammed out, check engine light is on, ditch school get it home use my tuner to get the engine codes. here are the codes:

P0133 Upstream Heated Oxygen Sensor circuit Slow Response - Bank No. 1.
P0171 System Too Lean - Bank No. 1.
P0303 Misfire Detected - Cylinder 3

Now, these are brand new Oxygen sensors, put them in last year and it drove fine on problems so i dont think this is the case, i think its probably the plugs and wires, what do you guys think

Your help would be greatly appricated :TY:


Thanks again
Chris

 

[Mustangman9812]

For some reason my car has the same codes in it, after i stored mine over winter. Wierd.

I have 1st two codes you have then my 3rd one is EGR code

 

[98mustanggtkid]

that is weird :hammer:

 

[mike97gt]

clear codes then swap plugs for cyl 3 and see what codes come back up.
if it still misses then you have a different problem (wires or injector).

 

[98mustanggtkid]

i think the same, i figure ill replace all the plugs and also do the wires as a nice tune up

 

[vermilion]

just maybe gummed injectors from sitting. :dunno:

 

[LI98GT]

Not to sound like a commercial but have to ask, did you use Stabil fuel saver? Right amount? Could be gas turned bad?

 

[Mustangman9812]

I did, but I think its the injectors on my car

 

[phil_the_thrill]

run like a half a can of seafoam through your gas tank or some other cleaner. might help it out if its your injectors or bad gas

 

[98mustanggtkid]

Well today i had some free time, and pulled out the plug, it was alittle wet, not oil or antifreeze but im pretty sure it was water, i then pulled out a plug on the same side and it was dry as a bone, as well as the one next to it? wouldnt all of them be wet it there was water int he gas tank? any ideas, i got new plugs and wires on the way is there something i can go in the mean time?