2015 , 5.3 6speed 83,000 miles ,headers , 4.56 gears , trans thermo delete , BBP tuned within first 8,000 miles or so.
Truck is daily driver , some towing. Oil changed every 5000 miles. Currently using Amsoil SS. All other fluids serviced as needed.
Has been a great truck!!
I have 2 strange events.
1. Ac condenser failed. When replaced and ac charged up , within 30 minutes the truck would not idle correctly. It oscillated from 500 rpm too 900 , back and forth.
Scan code showed lean bank 1 , po71
Pulled MaF , cleaned , idle relearn , problem cleared up. For about 2 weeks I noticed it would now start idling slightly higher than normal on random days. So decided to replace the sensor.
Today replaced it.(correct one verified )
Today also changed out coolant fluid. Doing so I also replaced the thermostat with a 192 degree.
First thing I notice today when driving is my oil pressure has changed significantly.
Idle is normal but slightest tough of pedal it jumps to 60 and stays there at any light throttle position.
Before the mods today my pressure when hot idles at 30 , Driving pressure 40 .
I dont see how changing the MAF and the thermostat would have any effect at all on the oil pressure ?
It's a 2 stage pump , mechanical, nothing electronic should have an effect on it.
Just coincidence?? Or am I missing something here ?
Appreciate any input ...