19Silverado94
Newbie
So here’s my adventure so far
Just picked up a 94 Silverado 4WD. Wouldn’t start so I replaced the distributor, spark plugs, wires, and ignition coil. It started right up Figured I’d change the oil before trying to drive it home. Removed the oil drain plug and nothing came out poked a screwdriver in there and chocolate fudge started slowly coming out. Bottles and cans of oil, engine flush, and SeaFoam later now it’s coming out amber. Tried to drive it but it stumbles and stalls if I apply throttle. Also changed the IAC valve, both temperature sensors(manifold and head), both fuel injectors, all TB gaskets. I did a search on this forum and managed to pull codes 15, 22, 33, and 43(after replacing the Service Engine Soon bulb which was burnt).
15 - Engine Coolant Temperature Sensor Voltage Low
22 - Throttle Position Sensor Voltage Low
33 - Manifold Absolute Pressure Sensor Voltage High
43 - Electronic Spark Control/Knock Sensor
Both temperature sensors are new, I’m going to replace the MAP sensor today, new knock and throttle position sensors are on their way from RockAuto along with a new PCV valve, hose, and 180 degree thermostat. Other things to note are my PCV valve and throttle body were clogged with thick gunk. Soaked them in solvent while brushing, picking, and air blasting them until they were clean. My engine temperature on my gauge pegs out all the way to hot when I start the truck after replacing the sensors. Before the gauge never moved no matter how long the truck idled which led me to replace it. The SES light is constantly flashing when I start the truck. Anyone experience this and what did you do to fix these issues? Thanks in advance! I’m planning on doing a full restore on this truck, didn’t want it to end up in the crusher!
Just picked up a 94 Silverado 4WD. Wouldn’t start so I replaced the distributor, spark plugs, wires, and ignition coil. It started right up Figured I’d change the oil before trying to drive it home. Removed the oil drain plug and nothing came out poked a screwdriver in there and chocolate fudge started slowly coming out. Bottles and cans of oil, engine flush, and SeaFoam later now it’s coming out amber. Tried to drive it but it stumbles and stalls if I apply throttle. Also changed the IAC valve, both temperature sensors(manifold and head), both fuel injectors, all TB gaskets. I did a search on this forum and managed to pull codes 15, 22, 33, and 43(after replacing the Service Engine Soon bulb which was burnt).
15 - Engine Coolant Temperature Sensor Voltage Low
22 - Throttle Position Sensor Voltage Low
33 - Manifold Absolute Pressure Sensor Voltage High
43 - Electronic Spark Control/Knock Sensor
Both temperature sensors are new, I’m going to replace the MAP sensor today, new knock and throttle position sensors are on their way from RockAuto along with a new PCV valve, hose, and 180 degree thermostat. Other things to note are my PCV valve and throttle body were clogged with thick gunk. Soaked them in solvent while brushing, picking, and air blasting them until they were clean. My engine temperature on my gauge pegs out all the way to hot when I start the truck after replacing the sensors. Before the gauge never moved no matter how long the truck idled which led me to replace it. The SES light is constantly flashing when I start the truck. Anyone experience this and what did you do to fix these issues? Thanks in advance! I’m planning on doing a full restore on this truck, didn’t want it to end up in the crusher!