Replaced o2 sensors idle control motor complete tune up ignition module and still have slow start up dont know what to do next once car is on runs great but cant get check engine light off please help
P1323 Is a code for ICM 24X Reference circuit low frequency.
P1350 Is fuel level sensor B intermittent
P0135 Is O2 hearer circuit malfunction. (Bank 1 sensor 1)
Is this car a cadillac or GM vehicle? Usually this code appear P1323 from poor mating connection or intermittent female to male connection inspect the connection the spade could of spreaded out. P1323 the choice tool is a volt meter you need to check the circuit for 12 volt hust because you installed a 02 doesnt mean you made the fix open the wire harness and inspect for wire that has rubbed through now depending on the year make and model which I dont know of the heater circuit can be fused so you need to check the engine fuse junction box and check the heater circuit fuse if it has any. As for the fuel lever circuit again intermittent connection check the connections
SOURCE: after engine heats up it stumbles and will not
Bench test your throttle position sensor... could be faulty.
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