[vncj96]

I have heard that you can clean O2 sensors, has anyone tried it with success? Did you use gas or another method?

 

[silveradotrailblazer]

I heard guys trying everything from gas,MAF cleaner, throttlebody cleaner none having any good results. If you have a bad O2 can't hurt to try.

 

[vncj96]

well my codes tell me its all 4 so i will try anything before i shell out a couple hundred bucks1

 

[silveradotrailblazer]

Did it throw ALL the O2's codes all at once? Wonder if you got something in your fuel?

 

[vncj96]

they were up when i bought it 18 months ago i still get 18mpg on the hwy but am just startring to get a little chug after a cold start and a tiny hesitation on accel until it warms up

 

[silveradotrailblazer]

I would just change or try to clean the front o2's, there the ones that control the engine. The rears are for emissions.