O2 Sensor Gone Bad?

[SneakySonBeach]

Here recently my car feels... well sluggish i guess is the word. Sounds different in a bad way, and i feel my gas mileage and suffered as well. I did install an off road xpipe but that was months ago and this problem just started about a week ago. I would have to say this may be an o2 sensor. is there any way to check and see if this is the case?

 

[MustangChris]

only way to see if an o2 is bad is to check the wires for breaks/tears or if it throws a code. other than that you'll just have to replace them.

 

[SneakySonBeach]

only way to see if an o2 is bad is to check the wires for breaks/tears or if it throws a code. other than that you'll just have to replace them.

Hmmmm no codes, well im gonna replace them, if its not oh well i'll have new sensors

 

[MustangChris]

yea. new sensors should at least give you a bump in MPG, we hope. lol.

do you have MIL eliminators?

 

[Shifty Powers]

odd they would be bad without throwing a code. no codes at all?

 

[SneakySonBeach]

yea. new sensors should at least give you a bump in MPG, we hope. lol.

do you have MIL eliminators?

i do have mil eliminators is that a reason?

 

[SneakySonBeach]

odd they would be bad without throwing a code. no codes at all?

only code i ever had was for my xpipe and that happened twice, other than that i don't think this car has ever had another code

 

[MustangChris]

MIL eliminators will cause it to run in a slightly rich setting, causing slightly worse MPG.

 

[SneakySonBeach]

MIL eliminators will cause it to run in a slightly rich setting, causing slightly worse MPG.

huh, well i've had those on since may and this problem only just occurred last week? I just tried to clean the MAF and though i did get better throttle response it still boggs down. any other reasons why this could happen?

 

[MustangChris]

clean MAF (done.)
run fuel injector cleaner (BG44/sea foam/etc.)
replace plugs.

 

[SneakySonBeach]

clean MAF (done.)
run fuel injector cleaner (BG44/sea foam/etc.)
replace plugs.

i've wanted to do seafoam for a while is there a write up on how to do it on here?

 

[MustangChris]

open gas cap.
place in funnel.
pour in can of sea foam.
fill tank with premium gas.
drive until near empty.
fill with mid-grade gas.
replace spark plugs, diagnose spark plugs.


if you replace your o2s, do it after the seafoam.

 

[SneakySonBeach]

can i go back to premium after switching to mid? sorry for all the questions

 

[MustangChris]

no worries man. thats why we're here

you can indeed run it through the intake if you want.

 

[SneakySonBeach]

no worries man. thats why we're here

you can indeed run it through the intake if you want.

so pour in gas tank and vacuum line, then get premium gas and then switch back to 87?

 

[MustangChris]

id probably run them at different times. the intake is pretty extreme

 

[SneakySonBeach]

alright thanks for all your help, i'll try this tomorrow :wave:

 

[MustangChris]

np man Be ready for SMOKE when you run it through the intake manifold... its like a CIA attack on your car. lol.

here's a how-to on putting it in the intake.

**BE sure to read the insturctions on the amount to put in** this dude put in the entire bottle, not sure if thats right...

http://www.youtube.com/watch?v=YFKNRma-ozE

 

[SneakySonBeach]

np man Be ready for SMOKE when you run it through the intake manifold... its like a CIA attack on your car. lol.

here's a how-to on putting it in the intake.

**BE sure to read the insturctions on the amount to put in** this dude put in the entire bottle, not sure if thats right...

http://www.youtube.com/watch?v=YFKNRma-ozE

haha i've heard about it i was just watching this video!

http://www.youtube.com/watch?v=c3cVqlnvSQ4

 

[Shifty Powers]

here you go... my seafoam writeup.. for 4vs.. but same principal..

that is for a full can.. Otherwise do 3/4s a can in vacuum and the rest in gastank if you feel the need

http://www.sn95forums.com/showthrea...-IMRC-s-runners-with-Seafoam!!!-also-manually