2 dead 02 sensors FML HELPP

[gotboost1099]

so my car has been randomly breaking up like it was hitting a rev limiter and than it would clear up so now its so bad i cant even drive it. i unplug the 02 sensors and it runs great. how hard is it to change these.

[vape-one]

They aren't hard to change out.. Just gotta crawl under car.. What is the symptoms?? How did ya know it's the O2 sensor?? Is it cutting out an loosing all power cuz that is what mine is doing.. I guess I will do the ECM thing an check my O2 as well.. Maybe that is whats up with mine.. Its backfiring when it gets to about 5grand an let off ...

[gotboost1099]

i would cut out/buck/loose power under load. it would rev fine and go through first and second gear. i unpluged them and car is running fine just really rich. i was told you have to take them out from the pow with some tool with like 10 extentions and a box wrench end.

[bartZ32tt]

Actually, the O2's are kind of a b**** to break loose if they're original. So first make sure they're both bad first by checking the ecu. The passenger's side is easier, driver's side is more difficult. They probably need to come out from the top. You'll want to remove the battery and maybe unhook the brake booster hose for more clearance. You'll want to soak them in pb blaster at least one day in advance. I tried this and still couldn't get it to break loose with my 3/8" ratchet. I've read about people using compressed air cans turned upside-down to freeze the sensor, making it easier to break loose, but hard to do on a ttz. You'll need a flex-joint and extensions. You can buy an O2 sensor tool on amazon for pretty cheap. Once spring hits, I may re-attempt after I buy a 1/2" flex joint but the clearance is TIGHT. Good luck, post your results and method.

[es.biggs]

+1 on the PB Blaster. That stuff is great. It's in just about every parts store, in a spray can. Think WD-40 on steroids