wopony12 Posted June 24, 2016 Report Share Posted June 24, 2016 Sorry, I mistyped the code. It is a 23 not 53, which is for mixture control solenoid. Wires to solenoid do I check each wire separate or across boh wires for 12 volts.Thanks Link to comment Share on other sites More sharing options...
GarageHawk Posted June 24, 2016 Report Share Posted June 24, 2016 I believe Code 23 for your car, (1987, 5.0L, Carburetor, VIN 9) is "Inlet air temperature sensor signal showed an air temperature below -22° F after the engine has been running for 5 minutes". Other symptoms can include hard starting or black smoke at the exhaust do to over rich condition. The low temperature indicates an open circuit. I would look for either a disconnected or defective air temperature sensor in the base of the air cleaner. Another possibility is a broken wire at the connector to the temperature sensor. Good luck! Bill Link to comment Share on other sites More sharing options...
silverstude Posted June 25, 2016 Report Share Posted June 25, 2016 Here are the OBD codes for 1983 - 1991 Avantis http://www.studebaker-info.org/Avanti/83-91OBDcodes.txt Link to comment Share on other sites More sharing options...
wopony12 Posted June 26, 2016 Author Report Share Posted June 26, 2016 Thanks, greatly appreciate these codes. Different than what I found online. Thanks again Link to comment Share on other sites More sharing options...
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