Re: A question before visiting my mechanic...
"L David Matheny" <email@example.com> wrote in message
> "Patricia Butler" <firstname.lastname@example.org> wrote in message
> > Hi! It's not so easy to access this group now that AOL doesn't offer
> > newsgroup access anymore.
> > I live in the Chicago area and drive a 1993 240 wagon. Back in
> > November, on my way home from Wisconsin, my "Check Engine" light came
> > on. The car seemed to be running just fine, but I pulled over and
> > called my mechanic back home, and he said there probably wasn't
> > anything to worry about, just bring the car in when I got home, which I
> > did. They gave it a quick look-see and didn't find anything wrong with
> > it. I didn't have time for more than that at the time, and -- one
> > thing leads to another -- haven't been back since for a more thorough
> > check or to have the "Check Engine" light turned off. During that
> > time, the car has seemed to run fine, though possibly slightly rougher
> > idle than usual, and has, once or twice, stalled out during idle on the
> > initial start-up in the morning.
> > However, the gas mileage has been TERRIBLE. For example, I completely
> > filled the tank on Friday. Saturday and Sunday I drove no more than 4
> > miles, total. My total commute to work, round trip, is 3 miles. With
> > a couple of short side trips, that makes my total miles driven from the
> > time I filled my tank on Friday until today approximately 25 miles (to
> > be generous). My gas tank is now half empty (or half full, if you're
> > an optimist). Now no Volvo 240 wagon is going to get spectacular
> > mileage, but 50 miles to the TANK seems a bit ridiculous. I wasn't
> > having this kind of mileage before the "Check Engine" light came on.
> > So I'm finally getting ready to take the car back to the mechanics.
> > Based on what I've told you, does this problem sound at all familiar?
> > Anything special I should ask the mechanic to do/look for? Any
> > suggestions would be appreciated.
> > Thanks much,
> > Patricia
> I think the Check Engine light usually relates to emissions. I'm
> not familiar with the 240, but if it has one or more oxygen sensors
> I would suspect a failure there first. Or maybe the air-mass meter.
> The computer readout should tell them something.
When I've seen that problem it was the air mass meter, try unplugging it and
see if fuel economy improves, it'll still be awful but not THAT bad.