Question about Chevrolet Lumina
1991 lumina chevy will run ok intill it warms up then it seems like it running rich it blows out black smoke and it will die if you dont floor it i ran a scan on the trouble codes it read 22,23,43,53 i dont know were to start any tips?
DTC - 22 Throttle position sensor error (signal low), is tps connected?
DTC - 23 Intake air temp sensor error (low temp indicated) check and make sure the sensor is connected
DTC - 43 Knock sensor error, ignore this for now, will not cause rich run.
DTC - 53 System voltage too high, check reference voltage from PCM, it should be around 4.5 Volts, this could be the cause of all your problems, the computer will need to replaced almost for sure.
Posted on Oct 06, 2008
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Posted on Jan 02, 2017
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