On a '91 I'm getting codes 44 (which is "lean fuel"), and 66 (not listed on my chart).
Can you tell me what 66 is, and what may be my problem?
Thanks.

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66 is for the A/C sensor.  It won't trigger the CEL but it will flash if you check the code.
Gilles
2.3 Ho
 
What do you think this would be, bad Oxygen sensor?

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Do you have it all the time?  The code I mean.
Gilles
2.3 Ho
 
No, very sporatic.  It will come on for maybe 30 seconds and go out.  It may come on twice during a 20 minute drive.

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