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.
1987 Ford Bronco II 4WD V6-177 2.9LFACTORY OEM SERVICE PROCEDURE
Engine - Water Entry Through Air Intake System
Article No.
94-3-8
02/09/94
^ AIR INTAKE - 2.9L, 3.0L, 4.0L EFI ENGINES - WATER ENTRY THROUGH AIR INTAKE SYSTEM
^ ENGINE - 2.9L, 3.0L, 4.0L EFI - POSSIBLE INTERNAL DAMAGE FROM WATER ENTRY THROUGH AIR INTAKE SYSTEM
LIGHT TRUCK:
1986-90 BRONCO II
1986-94 RANGER
1991-94 EXPLORER
This article is being republished in its entirety to add 1993-94 4.0L Ranger, 1993-94 3.0L Ranger and 1993-94 4.0L Explorer vehicles.
ISSUE:
Reports have been received of internal engine damage caused by water entering the engine through the air intake system. This condition may occur when the vehicle is driven in normal wet conditions, such as water splash/spray from other vehicles, or when driven through shallow water. Improvements were made to the EFI engine air intake systems that have greatly reduced the number of reported incidences.
ACTION:
Dealers should be assured that warranty repairs will be covered unless there Is evidence of owner misuse. This warranty repair policy will remain effective unless you are notified that a waterproof air intake system has been released.
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 91-21-10
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 497000, 499000
94-3-8
02/09/94
^ AIR INTAKE - 2.9L, 3.0L, 4.0L EFI ENGINES - WATER ENTRY THROUGH AIR INTAKE SYSTEM
^ ENGINE - 2.9L, 3.0L, 4.0L EFI - POSSIBLE INTERNAL DAMAGE FROM WATER ENTRY THROUGH AIR INTAKE SYSTEM
LIGHT TRUCK:
1986-90 BRONCO II
1986-94 RANGER
1991-94 EXPLORER
This article is being republished in its entirety to add 1993-94 4.0L Ranger, 1993-94 3.0L Ranger and 1993-94 4.0L Explorer vehicles.
ISSUE:
Reports have been received of internal engine damage caused by water entering the engine through the air intake system. This condition may occur when the vehicle is driven in normal wet conditions, such as water splash/spray from other vehicles, or when driven through shallow water. Improvements were made to the EFI engine air intake systems that have greatly reduced the number of reported incidences.
ACTION:
Dealers should be assured that warranty repairs will be covered unless there Is evidence of owner misuse. This warranty repair policy will remain effective unless you are notified that a waterproof air intake system has been released.
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 91-21-10
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 497000, 499000
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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.
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