1. Plugged cowl drains: The cowl drains are small channels located at the base of the windshield that allow water to drain away from the vehicle. If these become plugged with dirt or debris, water can back up and leak into the passenger compartment.
2. Sunroof drain tubes: If your Oldsmobile 88 has a sunroof, the drain tubes may be clogged or disconnected. This can cause water to leak into the headliner and drip down onto the floor.
3. A/C drain tube: The A/C drain tube is responsible for draining condensate water from the air conditioner. If this tube becomes blocked, water can drip onto the floor.
4. Seal leaks: The seals around the doors, windows, and trunk can leak over time, allowing water to enter the vehicle. Check the seals for cracks or gaps and replace them if necessary.
5. Rust: Rust can cause holes to develop in the floor pan of your Oldsmobile 88, which can allow water to leak in. Check the floor pan for rust and repair any holes that you find.
