o2 sensors

[blitz43]

how many o2 sensors is there on a 95 gst auto
is there one on a the turbo it self on the o2 housing??

i have a bad fuel economy and im trying to figure out whats dead and which isn't
right i have to replace my egr valve and someone else told me that its probaly that one of the o2 sensors went bad but iono which one did of thats the case...

can anyone help

thx

 

[mitsuclipsegsx]

their r 2 one before cat and one after, chnage the one before the cat

 

[blitz43]

their r 2 one before cat and one after, chnage the one before the cat

would this return my fuel economy to normal????

 

[mitsuclipsegsx]

yes

 

[blcknspo0ln]

well run a datalogger or OBDII scanner through her first; if you're front o2 is bad then it will throw a code at ya

i believe it will be : bank 1 sensor 1

 

[blitz43]

dats da thing right now im only throwing a code for my egr valve malfuction p0400
and some auxillary malfuction code to but i don't even know what that is

 

[blackGSX2g]

Usually a dead o2 sensor won't flag a CEL though. Just watch the o2 voltage on the logger and if its really low all the time, its dead.

 

[blitz43]

Usually a dead o2 sensor won't flag a CEL though. Just watch the o2 voltage on the logger and if its really low all the time, its dead.

logger i don't have a logger could they look that up at autozone