Re: O2 sensors and idling woes...

[16V Jason <jason@scirocco.org>]

At 12:47 PM 11/1/2001, dave t wrote:
>While we're on the topic of O2 sensors...
>
>How do I know my O2 sensor is bad? Im trying to chase down a rough idling 
>problem and the O2 sensor is on my list. When i start my car, it'll idle 
>rough and then normalize after a few bounces. does the same after the car 
>is taken out of gear. so far i've cleaned out the idle stablizer, replaced 
>the injector rings, and checked for vacuum leaks (i'll probably have to do 
>this again). i'll have to try to clean and re-torque the knock sensor next.
>
>When I disconnect the O2 sensor altogether, my idling is still as rough as 
>when its on. Does this mean its bad?

It *shouldn't* be the O2 sensor since the computer doesn't look for a 
reading from the O2 sensor until it's up to normal operating 
temperature.  Cold starts will ignore the O2 sensor.

Did you check your ignition timing?

Jason


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