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Expo obd1 code 54


YungICY

YungICY

Well-Known Member
Joined
Jul 19, 2013
Messages
351
Vehicle Year
1985
Transmission
Manual
I'm getting a code 54 on my 91 expo (iat signal high) replaced the sensor and code went away for a couple of short town drives then came back. Any suggestions?
 
I'd suspect bad wiring to/from that sensor.
 
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