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wide band 02 does the car need to be under load

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Old Dec 27, 2002 | 08:34 PM
  #1  
AustinT's Avatar
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From: Cannonville,Ut,Usa
wide band 02 does the car need to be under load

I tried the wide band o2 sensor on the car for the first time tonight.

The o2 sensor was clamped in the exhaust. Afr was 12/1
When I stomp on the throttle to quickly the DVM resets itself. would it be better to do some actual pulls on the road instead of just sitting in the driveway?

What is an Ideal AFR?
Thanks
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Old Dec 28, 2002 | 08:56 AM
  #2  
RBob's Avatar
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: wide band 02 does the car need to be under load

Originally posted by AustinT
I tried the wide band o2 sensor on the car for the first time tonight.

The o2 sensor was clamped in the exhaust. Afr was 12/1
When I stomp on the throttle to quickly the DVM resets itself. would it be better to do some actual pulls on the road instead of just sitting in the driveway?

What is an Ideal AFR?
Thanks
I'am not sure of what you mean by clamped in the exhaust. The outside portion of the sensor needs to be in the air while the cone portion needs to be in the exhaust stream.

12:1 is not unusual for a car that has been recently started. It would still be in either open loop and/or cold start enrichment (choke).

It sounds like the DVM is auto-ranging. Can you lock the range?

RBob.
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