- Nov 4, 2013
- 13
So my 2002 Envoy has no mods and the Oil Pressure Gauge is bouncing all over place when I'm idle or stopped. Here's what I know and have done. The RPM's in idle hold at 600. No visible oil leaks or pooling in engine compartment. Cap is tight. Engine isn't making any unusual sounds. Cleaned the throttle body. New Oil Pressure Sending Switch. My next step is to replace oil pump with repair kit from rock auto??? Or, does anyone have suggestions or dealt with something similar??? Any help or insight is greatly appreciated