AnthonySS
06-04-2004, 08:02 AM
Thanks to Lambton Park Auto (Airpacker) and McCulloch Engines (Jeff) for the replacing the 5.7L (throttle body) in my 1991 K1500 Extended Cab.
Motor is 0.030” Over and has a tow cam. Engine idles real low.
Just one little glitch… The Service Engine Soon (MIL) light comes on when truck down shifts on grades or is stepped-on to get up to hiway speeds. Light is off when vehicle is restarted but will come on during downshift again. It happens around 2100 RPM
Scan codes revealed Knock Sensor…so Knock sensor was replaced. Light still came on…then Spark advance module code…. Connector was cleaned and truck was ok for a day.
Now it’s happening again.
Any thoughts guys?
Your input will be appreciated. THANKS
Motor is 0.030” Over and has a tow cam. Engine idles real low.
Just one little glitch… The Service Engine Soon (MIL) light comes on when truck down shifts on grades or is stepped-on to get up to hiway speeds. Light is off when vehicle is restarted but will come on during downshift again. It happens around 2100 RPM
Scan codes revealed Knock Sensor…so Knock sensor was replaced. Light still came on…then Spark advance module code…. Connector was cleaned and truck was ok for a day.
Now it’s happening again.
Any thoughts guys?
Your input will be appreciated. THANKS