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Question
I'm trying to change the oxygen sensor on my 1989 sierra pickup(305 engine)as the local mechanic said it was a bit lazy.I'm using an open end wrench but it won't move.I don't want do any damage,so any suggestions?
The sensors are extremley tight as it has been subjected to extreme heat.You will need to use vice grips or even heat the sensor with a torch.You can get a sensor socket designed for removing the sensor.You will never get it off with a open ended wrench.Vice grips and tap it with a hammer usually works.
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Answers by Expert:
Sean Halliday
Expertise
general auto repair,japanese,bmw,mercedes,mini cooper 1960/2009,general british cars,ford.I DO NOT work on automatic transmissions.Manual transissions i install clutches only.Many people ask me to diagnose noises from their cars,unfortunately i cannot do this unless i hear it.As you appreciate,vehicles can and will make a variety of noises.I DONT UPGRADE or fit aftermarket performace kits,parts,chips,only replacement parts.
Experience
40 years experience on all general auto repair.
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