03 mitsubishi montero limited oxygen sensor needs replace?

Question

hello i have 03 mitsubishi montero limited and my engine light is on so i bring it to car repair to check whats going on, they said its the oxygen sensor , the question is where and how to replaced this and they said there are 4 oxygen sensor on my truck so i dont know which one need to replace and is there any size of this for specific area or its all one size?Pls help me coz i dont wanna pay $330 for just this problem.Thanks

Hello i bring my truck to autozone for engine light error check and they said It states bank 2 sensor 1 is the problem. Which side of the truck is bank 2?Drivers or Passengers?Is it easy to replace this?Pls help me where i can locate this and what tools i need to replace and do i need a engine error check to turn off the light or it will be off once the damage sensor is replaced?

Answer 1

you need to ask them which 1 is the bad 1, they are located on the exhaust near the engine, some are in front of the convertor and some after, they unscrew like a sparkplug. Just spray the threads with wd-40 or PB Blaster to help with removel

Answer 2

You are about to get ripped off. The codes that were set when the check engine light came on tell you what the problem is. The O2 sensor sends a signal that sets the code. The O2 sensor does not need to be changed unless the code says it has failed. Go to auto zone or similar auto supply and they will read your codes. Write them down and post them here and some one should be able to diagnose the problem. NEVER replace any part till you know the problem.

Answer 3

Best to get another opinion.Maybe two.This lamp should be turned off after code is checked.And yes their are more than one and they are all different.Some times things such as tune up,including air and fuel filters etc. can cause the oxy sensor to log a code.Even bad gas.The tech.Will have to know a few things to properly repair.Lean-rich-upstream-downstream-right-left.If you can find a technician that's good and honest.It will be right the first time.$330. ? I don't know>It's like changing one spark plug.