95 4Runner rough idle

95 4Runner, V6, A/T 4x4
While stopped at an ATM, I noticed that my 4Runner was idling rough and had
a distinct odor from the exhaust. No noticeable loss of power when I pulled
away but, did not start right up after brief stop at a store a few minutes
later. Now seems to be back to normal while idling in the driveway. 103k
miles and the CO2 sensor has not been changed. I guessing that it is due.
Any thoughts?

AndyK. wrote:

> 95 4Runner, V6, A/T 4x4
> While stopped at an ATM, I noticed that my 4Runner was idling rough and had
> a distinct odor from the exhaust. No noticeable loss of power when I pulled
> away but, did not start right up after brief stop at a store a few minutes
> later. Now seems to be back to normal while idling in the driveway. 103k
> miles and the CO2 sensor has not been changed. I guessing that it is due.
> Any thoughts?

Change the sensor, but the rough idle along with a strange exhaust odor
sounds like you might have gotten some 'bad' gas. I've run into this
before and usually put in a bottle/can of gas treatment...
--
Tom - Vista, CA