"check engine"

[paQ]

[sorry, but the search doesn't work

What does it (usually) mean when "check engine" is lit up?
sometimes it is not lit up during driving, and suddenly it's back again.

When I reset the whole thing (unplugging the battery for a minute) it's gone. But when I drive it, or start it a few times, it's back again.

has this something to do with the injection? or air supply anyhow?


I can get a read-out at the dealer, but their schedule almost nevers fits mine :-?

[valbowski1980]

The Oxygen sensor going bad can cause this. Also, is your gas cap on tight? That can cause the light also.

[paQ]

Originally Posted by valbowski1980

The Oxygen sensor going bad can cause this. Also, is your gas cap on tight? That can cause the light also.

but to be sure I have to get a read-out at the dealer?

[boxman]

what year is your car :-??

[paQ]

Originally Posted by boxman

what year is your car :-??

it's a '92 CS 2.3 Turbo

[D. Wolfe]

Remove the O2 sensor and examine it. It should be white or at worst cream in color. If it is black, it is dead and should be replaced.

[paQ]

it wás the o2 sensor. And is fixed in the meantime :wink:

http://www.saabcentral.com/forums/vi...9c508a36fef0d8