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Why do vehicles with a carb use o2 sensors?


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Mr.scotty
Enthusiast
Mr.scotty profile image

Apr 20, 2011, 12:21 PM

Post #1 of 7 (2662 views)
Why do vehicles with a carb use o2 sensors? Sign In

I have a old mazda truck that has a carb, Why does it have a upstream o2 sensor?
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Your only as good as your tools!

(This post was edited by Mr.scotty on Apr 20, 2011, 12:22 PM)


Hammer Time
Ultimate Carjunky / Moderator
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Apr 20, 2011, 12:34 PM

Post #2 of 7 (2653 views)
Re: Why do vehicles with a carb use o2 sensors? Sign In

Because it has an electronic carb with a mixture solenoid.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Mr.scotty
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Apr 20, 2011, 3:09 PM

Post #3 of 7 (2647 views)
Re: Why do vehicles with a carb use o2 sensors? Sign In

Ok, so does that mean it has a PCM?
It has to have something computer like to control the solenoid rite?
Thanks for your replys!
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Your only as good as your tools!


Hammer Time
Ultimate Carjunky / Moderator
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Apr 20, 2011, 3:28 PM

Post #4 of 7 (2643 views)
Re: Why do vehicles with a carb use o2 sensors? Sign In

PCMs weren't used until 96 and OBD2. You do have a computer though.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Mr.scotty
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Apr 20, 2011, 5:42 PM

Post #5 of 7 (2637 views)
Re: Why do vehicles with a carb use o2 sensors? Sign In

Oh.. ok i understand.
So pree 96 is just called a computer?
Do you know where the compuer on this truck is located cause I've never seen it.
It's a 87 mazda B-2000 2wd.
Thanks for your info!
--------------------------------------------------------

Your only as good as your tools!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 20, 2011, 5:46 PM

Post #6 of 7 (2633 views)
Re: Why do vehicles with a carb use o2 sensors? Sign In

Right hand kick panel



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Mr.scotty
Enthusiast
Mr.scotty profile image

Apr 20, 2011, 9:26 PM

Post #7 of 7 (2626 views)
Re: Why do vehicles with a carb use o2 sensors? Sign In

Alrite, I just like to know these things just in case.
Thanks again you've been a big help!
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Your only as good as your tools!






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