John

Try disconnecting the idle stabilizer and running for a few days or
longer if this makes the problem disappear.  Can run indefinitely with
it disconnected, especially now that it is getting warmer.

Also attached is a file about problems and solutions related to the
AFM that sometimes plague these buses.   If you go for cleaning up the
AFM look for mail from Todd Last who kindly posted pictures of one on
his web site for us to see.

Temp II sensor can also cause erratic fuel injection system behavior as
can a faulty O2 sensor.  See archives over the last three months for
extensive discussions of this by the technically sophisticated - not me.

Sam Walters