Multiple random misfires on random cylinders.
I have installed new:
Cam Position Sensor
Crank Position Sensor
Distributor cap and rotor
Spark Plugs (ACDelco)
Spark plug wires (BWD)
2 new catalytic converters
All O2 sensors (4)
Fuel pump and sending unit (complete assembly)
Air temp sensor
Coolant Temp Sender
I haven't had the truck long.....not even long enough to get inspection and tags. I drove it for 70 miles Friday afternoon without incident.....later that evening the misfiring started.
Seems like it is losing current....the reason I say this is because without disconnecting the battery the clock on the radio resets randomly. I have wire brushed the battery terminals and wires....and put in new terminal bolts.
Current codes are (had these codes prior to Coolant Temp Sensor change, which is why I changed it):
P0118 Engine Coolant Temperature Sensor High Input (scan tool reports the engine temp at 180F)
P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage
I will add that before the temp sensor change the inside gauge showed about 150F and now it shows about 235F
Any input would be greatly appreciated.
Edited by Randy_H, 08 October 2012 - 11:49 PM.