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Air fuel ratio up and down

Jake92vr

New member
Joined
Apr 22, 2017
Messages
2
Location
Enumclaw
Hey guys I'm new to the forum I just bought a 1992 Galant vr4 no.208 I'm having issues with the car having idle issues and running super lean and then super rich. I installed a wife and so I could see what's going on the car will idle at 14.7 the. Start idling rough bouncing from 10 all the way to 16z I cleaned the Cas and it helped a little could it be bad and showing signs of failing? Just trying to get it running smooth any help would be appreciated!
 

iceman69510

Turn Right Racing
Staff member
Joined
Mar 5, 2001
Messages
10,964
Location
Michigan
Welcome. Not sure how installing a "wife" helped ( /ubbthreads/images/graemlins/grin.gif), but you may have a vacuum leak. Possibly at the BISS (base idle speed screw). The system is reacting to the changing air volume.
 

Jake92vr

New member
Joined
Apr 22, 2017
Messages
2
Location
Enumclaw
Okay I'll check that today.i ment to say a wideband lol. But I guess the phone auto corrected to wife anything else that it could be? Like a cas?
 

mrt0mjones

Active member
Joined
Apr 17, 2014
Messages
28
Location
Waterport, NY
nomatter what i'll just blame the Wife.

do you have anything to monitor your MAF signal or o2 input?
 
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