For 1990-2009 cars

#### 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 more than specfied 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