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Oxygen sensor

Tiny
CURT SMITH2
  • MEMBER
  • 1992 CHEVROLET CAPRICE
  • V8
  • 132,400 MILES
The idle goes up and down and I have to floor it to get going, it wants to die.
Saturday, June 25th, 2016 AT 11:52 AM

5 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I have to ask, how long since a tune-up? 02 sensors are part of a tune-up. Are there any applicable trouble codes? Usually with any idle issues, I want to clean the throttle-body, check and clean anything that has to do with idle air system.

The generic basics for a rough idle is to check for a leak of some kind, fuel--egr--vacuum leak.
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Saturday, June 25th, 2016 AT 12:18 PM
Tiny
CURT SMITH2
  • MEMBER
  • 2 POSTS
Auto zone did not have hook up the flash code was 44 that is where I got o2 sensor. Where is it at?
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Saturday, June 25th, 2016 AT 1:58 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,979 POSTS
Hey Curt,

It sounds like you have a vacuum leak, and a weak fuel pump, or a plugged fuel filter.

Here are some guides to help you.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

and

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let us know what you find so it will help others

Best, Ken

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Tuesday, June 28th, 2016 AT 12:11 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I thought I posted the 02 sensor was in the exhaust? Maybe I'm getting absent minded in my old age?
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Tuesday, June 28th, 2016 AT 1:00 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,979 POSTS
Lol, nope I must have not noticed it and posted over it sorry about that.
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Tuesday, June 28th, 2016 AT 3:16 PM

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