Generally, the CKP sensor on a 1991 Dakota is located somewhere on the engine block, near the crankshaft pulley. It's often near the distributor (if equipped) or the bellhousing. It's usually a small sensor with a single wire connector.
To find it, you'll need to:
1. Identify your engine size: Check your vehicle's documentation or look for an engine identification tag usually located on the engine block itself.
2. Consult a repair manual: A repair manual specific to your year and engine will have a diagram showing the exact location of the crankshaft position sensor. This is the most reliable method. You can find these manuals online or at auto parts stores.
3. Search online: Search online for "1991 Dodge Dakota [Your Engine Size] crankshaft position sensor location." You might find pictures or videos showing the location. Be cautious; always double-check with a reliable source.
Caution: Working on your vehicle can be dangerous. If you are not comfortable doing this yourself, take it to a qualified mechanic.