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From: ams@hou4b.UUCP
Newsgroups: net.auto
Subject: Idiot Light Question
Message-ID: <1087@hou4b.UUCP>
Date: Thu, 9-Aug-84 22:17:06 EDT
Article-I.D.: hou4b.1087
Posted: Thu Aug  9 22:17:06 1984
Date-Received: Fri, 10-Aug-84 04:29:44 EDT
Organization: AT&T Information Systems Laboratories, Holmdel, NJ
Lines: 33


	Some time ago I had an interesting experience in my 1981
Pontiac T-1000 (same car as Chevy Chevette): I was driving along
and the "check engine" light (not the same as the "oil" light)
came on.  The manual said is was a problem with the "Computer
Command Control" (seriously) and/or the oxygen sensor in the
exhaust system.  This was accompanied by major stalling at toll
booths.  By the end of the trip the stalling had gone away and the
car was wanting to race across the parking lot at 45mph without
any foot on the gas.
	So I took it to the shop where the fixed a perviously
undiagnosed exhaust system leak and turned down the idle.  Driving
to work the next day, the light came back.  I was told that the
automated diagonstic routines could find nothing wrong and I
should wait until something broke, whereupon they could fix it.
	Currently the light comes on after about 5 minutes of 60mph
or above driving, stays on for 5-10 minutes, and then goes off
again. The cycle then continues with variable intervals.  The
cycle does seem to have something to do with speed, since I have
never seen it come on below 55 and it always goes off when I get
off the highway.  However, it also goes off spontaneously if I
just ignore it and keep going 65.  Gas mileage is still about the
same as it used to be.
	Does anybody have any idea what the problem is?  This has
been going on for 3 weeks now, and nothing else has happened. 
However, I am still paranoid that something will break, leaving me
stranded in the middle of the night on some deserted stretch of
road.

		Thanks for your help,
		Andrew Shaw AT&TISL
		834-4085 HO 1C-412A
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