Re: Hard code 43 ,93 k1500 Help need info
good suggestions,but been there, i did inquire about the pick-up coil tho,but didnt follow thru with the check myself. the voltages are good and consistent to the knock sensor.
Code sets immediatly at startup. scan tool readings are steady and normal,except the knock signal go's thru the roof(ok not that bad) under load. with a timing light hooked up and monitoring scan tool. eng advances at idle,under load-let the timing battle begin. it seems the truck is trying to advance but slowly gets beaten down to base set timing,of course bogging it badly.motor is quiet,map sensor good ,tps good and smooth.fuel pressure and regulator perfect pressures.High resistance at the pick-up,hadnt occured to me,but the sudden code has me bewildered. I also have considered a mem-cal failure.but i dont like being a component replacer.i always want to know why.Thats where the circuit pic comes in,so i can do a physical check of each circuit to their respective compnents.