Cant open all sensors very tight i just open one and i clean it then fixed i get the code p0171 system too lean but everything ok even the sensor i cleaned volts go up and down very good its get 1.3 volt up Its the sensor 1x2
Other sensors like i said cant open them
Im starting pulling my hair now

 

try removing engine warm ?

 

What is the engine warm where is it
U know i think all o2 sensors rusted Coz the cherokee have 3 month in ship coming from USA
That sensor when i cleaned its get 1.3 is tht good or not

 

Have you tried removing o2s with the engine warm ?

 

No coz i cant touch the engine its not only warm its hott

 

start engine let exhaust get warm and try them not scalding hot but warm wear gloves

 

I couldn't change my pre-cat O2 sensor out on my own, I took it into the mechanic's and he heated it with a torch until it glowed red hot... only then he was able to get it out

 

Ok i will try that thanx for the help

 

Isn't gas like 25 cents a gallon in Saudi Arabia?
Geesh! I guess you have to worry about distance more than cost ... must be nice! I'm stuck with 5 bucks a gallon!
Nice bluetooth reader ... have to look into that.

 

Im not worry bout cost just want better performace for distance cross
Yes only 9-10 bucks overflow 20 gallons