Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1997 Buick Century CustomFACTORY OEM SERVICE PROCEDURE
Component Location
COMPONENT LOCATIONS
| Component | Location | |
|---|---|---|
| A/C Pressure Sensor | Right Side Of Engine Compartment, On Accumulator | |
| Camshaft Position (CMP) Sensor | Right Side Of Engine, Below Intake Plenum | |
| Crankshaft Position (CKP) Sensor | Lower Rear Of Engine, Below Exhaust Manifold (7X), Or Right Front Side Of Engine, Behind Harmonic Balancer (24X) | |
| Cruise Control Module | Left Side Of Engine Compartment, Mounted To Strut Tower | |
| Data Link Connector | Under Instrument Panel, Right Of Steering Column | |
| EGR Valve | Upper Left Side Of Engine, Near Throttle Body | |
| Engine Coolant Temperature (ECT) Sensor | Top Left Side Of Engine, Below Throttle Body | |
| Engine Oil Level Switch | In Oil Pan, Lower Front Center | |
| Engine Oil Pressure Switch | Front Of Engine, Above Starter | |
| EVAP Canister Purge Solenoid | Top Rear Of Engine, Behind Ignition Control Module | |
| EVAP Canister Vent Solenoid | Behind Left Rear Fascia Splash Shield, In Wheelwell | |
| Fuel Injectors | In Intake Manifold | |
| Idle Air Control (IAC) Valve | Top Of Engine, Front Of Throttle Body | |
| Ignition Control Module | Top Center Rear Of Engine | |
| Intake Air Temperature (IAT) Sensor | Left Front Of Engine Compartment, On Air Intake Duct | |
| Knock Sensor | On Front Of Engine, Above Starter | |
| Manifold Absolute Pressure (MAP) Sensor | Top Rear Of Engine, Above Valve Cover | |
| Mass Airflow (MAF) Sensor | Left Front Of Engine, In Air Intake Duct | |
| Oxygen Sensors (O2S) | ||
| Pre-Converter | Behind Center Of Engine, In Exhaust Manifold | |
| Post-Converter | Rear Of Catalytic Converter | |
| Powertrain Control Module (PCM) | Left Side Of Engine, In Air Cleaner Assembly | |
| Throttle Position (TP) Sensor | Top Of Engine, On Throttle Body | |
| Transaxle Range Switch | Left Of Engine On Transaxle | |
| Underhood Electrical Center | Right Side Of Engine Compartment, Mounted To Strut Tower | |
| Vehicle Speed Sensor | Lower Right Side Of Engine Compartment, On Transaxle | |
COMPONENT LOCATIONS
| Component | Location | |
|---|---|---|
| A/C Pressure Sensor | Left Side Of Engine Compartment, On Accumulator | |
| Body Control Module | Below Left Side Of Instrument Panel, Left Of Steering Column | |
| Camshaft Position (CMP) Sensor | Right Side Of Engine, Below Intake Plenum | |
| Crankshaft Position (CKP) Sensor | Lower Rear Of Engine (7X) Or Right Front Side Of Engine, Behind Harmonic Balancer (24X) | |
| Cruise Control Module | Left Side Of Engine Compartment, Mounted To Strut Tower | |
| Data Link Connector | Under Instrument Panel, Right Of Steering Column | |
| EGR Valve | Upper Left Side Of Engine, Near Throttle Body | |
| Engine Coolant Temperature (ECT) Sensor | Top Left Side Of Engine | |
| Engine Oil Level Switch | Center Of Engine Oil Pan | |
| EVAP Canister Purge Solenoid | Top Rear Of Engine, On Intake Manifold, Behind Generator | |
| EVAP Canister Vacuum Switch | Top Rear Of Engine, On Intake Manifold, Behind Generator | |
| Fuel Injectors | In Intake Manifold | |
| Idle Air Control (IAC) Valve | Top Of Engine, Front Of Throttle Body | |
| Ignition Control Module | Top Center Rear Of Engine | |
| Intake Air Temperature (IAT) Sensor | Left Front Of Engine Compartment, On Air Intake Duct | |
| Knock Sensor | On Front Of Engine, Above Starter | |
| Manifold Absolute Pressure (MAP) Sensor | Top Rear Of Engine, Near Fuel Injectors | |
| Mass Airflow (MAF) Sensor | Left Front Of Engine Compartment, In Air Intake Duct | |
| Oxygen Sensors (O2S) | ||
| Pre-Converter | Rear Of Engine, In Exhaust Manifold | |
| Post-Converter | Rear Of Catalytic Converter | |
| Powertrain Control Module (PCM) | Left Side Of Engine Compartment, Inside Air Cleaner Assembly | |
| Throttle Position (TP) Sensor | Top Of Engine, On Throttle Body | |
| Transaxle Range Switch | Left Of Engine On Transaxle | |
| Underhood Electrical Center | Right Side Of Engine Compartment, Mounted To Strut Tower | |
| Vehicle Speed Sensor | Right Rear Of Engine Compartment, On Transaxle | |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.