Angelo217
Member
- Joined
- May 22, 2024
- Posts
- 37
- Reaction score
- 18
2006 Chevy Tahoe 5.3L 233k miles
Using synthetic high mileage 5W-30
Had truck for 13k miles
Noticed lower pressure upon purchase in may 24 (Now November 24)
Truck gets okay oil pressure after a fresh oil change just did one so just below 40 at idle currently after an oil change 10 miles ago.
Pressure drops as it warms up, will continue to get lower and lower as the oil degrades. Begins to droop below 20 after I’d say roughly 3k miles on the oil.
I’ve already done the pickup tube o ring. Pickup tube is clean and not clogged.
Oil pressure sensor assumed to be working (hooked up autel scan tool to OBD, shows sensor is reading accurate.)
No excessive engine noise, or strange noise, no knocking no ticking. Smooth motor. Feels underpowered compared to other 5.3’s I think it’s unrelated.
Does this point fingers to the oil pump or bearing wear? Or what else should I check thanks
On average in between changes I’m hovering at 28-32 or so maybe on the highway. At 80 MPH.
High 30’s cold idle.
20 and below warm idle.
Will shoot slightly above 40 upon heavy acceleration In between changes, if the oils getting older it won’t even go above 40.
Using synthetic high mileage 5W-30
Had truck for 13k miles
Noticed lower pressure upon purchase in may 24 (Now November 24)
Truck gets okay oil pressure after a fresh oil change just did one so just below 40 at idle currently after an oil change 10 miles ago.
Pressure drops as it warms up, will continue to get lower and lower as the oil degrades. Begins to droop below 20 after I’d say roughly 3k miles on the oil.
I’ve already done the pickup tube o ring. Pickup tube is clean and not clogged.
Oil pressure sensor assumed to be working (hooked up autel scan tool to OBD, shows sensor is reading accurate.)
No excessive engine noise, or strange noise, no knocking no ticking. Smooth motor. Feels underpowered compared to other 5.3’s I think it’s unrelated.
Does this point fingers to the oil pump or bearing wear? Or what else should I check thanks
On average in between changes I’m hovering at 28-32 or so maybe on the highway. At 80 MPH.
High 30’s cold idle.
20 and below warm idle.
Will shoot slightly above 40 upon heavy acceleration In between changes, if the oils getting older it won’t even go above 40.