Disconnecting the oxygen sensor connector is a good thing to
remember.

When we first got our van, the J-pipe broke upstream of the oxygen
sensor in the middle of a road trip.  Just like Joy's van, mine
ran fine when it was cold or first started hot.  It would get worse
and puff black smoke, misfire, etc. pretty fast, except at full
throttle.  So not knowing enough to disconnect the oxy sensor, we
did the drive at full throttle or coasing.  Not to mention it
sounded like a Beetle, with no muffler!

I got the exhaust system fixed the next day and all was good again.

So:  If it runs fine when cold and at full throttle, suspect your oxygen
sensor.  It's easy to unplug too:  Green wire leading from the oxygen
sensor (in the catalytic converter) has a spade connector in the engine
bay.  Undo this and you're good to go!  (This is on the 2.1s)

--tabe johnson
xtabe@yahoo.com

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