Oil Pressure High or Low
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Oil Pressure High or Low
| Checks |
Causes |
| Oil Pump Assembly (4) |
- Pressure regulator valve stuck
- Pressure regulator valve spring
- Rotor guide omitted or misassembled
- Rotor cracked or broken
- Reverse boost valve or sleeve stuck, damaged or incorrectly assembled
- Orifice hole in pressure regulator valve plugged
- Sticking slide or excessive rotor clearance
- Pressure relief ball not seated or damaged
- Porosity in pump cover or body
- Wrong pump cover
- Pump faces not flat
- Excessive rotor clearance
|
| Oil Filter (72) |
- Intake pipe restricted by casting flash
- Cracks in filter body or intake pipe
- O-ring seal missing, cut or damaged
- Wrong grease used on rebuild
|
| Control Valve Body (60) |
- Manual valve scored or damaged
- Spacer plate or gaskets incorrect, misassembled or damaged
- Face not flat
- 2-3 Shift valve stuck
- Checkballs omitted or misassembled
|
| Pressure Control Solenoid (377) |
Damage to electrical terminals |
| Transmission Fluid Pressure Manual Valve Position Switch (69) |
- Contamination
- Damaged seals
|
| Case (103) |
Case to control valve body face not flat |
| System Voltage |
- 12 volts not supplied to transmission
- Electrical short (pinched solenoid wire)
- Solenoid not grounded
|