To find it, you'll need to:
1. Identify your engine: Check your vehicle's documentation or the engine bay for an engine code. This code will help you determine the precise engine type.
2. Consult a repair manual: Once you know the engine, get a repair manual specific to your year and engine. These manuals have detailed diagrams showing the sensor's location. Haynes and Chilton are popular choices.
3. Look near the distributor (if applicable): Many engines of this era, especially those with distributors, place the CMP sensor near the distributor. It might be on the distributor itself or on the engine block very close to it.
4. Search online forums: Search online forums specific to 1988 Oldsmobile Cutlasses. Someone might have already posted a picture or detailed description of the sensor's location for your specific engine.
Without knowing your exact engine type, a precise location can't be given. Using the steps above will be much more effective in finding your CMP sensor.