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.
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HOMESERVICE MANUALSFORD1996F 150 4WD PICKUP L6-300 4.9LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSROAD TEST
1996 Ford F 150 4WD Pickup L6-300 4.9L
Road Test
1996 Ford F 150 4WD Pickup L6-300 4.9LSECTION Road Test
IMPORTANT POINTS TO REMEMBER
To determine if the problem is in the front or rear braking system, first apply the service brake pedal, then apply only the parking brake.
- If the condition (i.e. pull, vibration, pulsation) occurs only with the service brake, the problem is in the front system.
- If the condition occurs when the parking brake is applied (and does not occur with the service brake applied), the problem is in the rear system.
WARNING: Be careful not to inadvertently lock up the wheels when braking with the parking brake, you may not be able to quickly release it.
The brake system should be tested at different vehicle speeds using both light and heavy brake pedal pressure.
Avoid locking the brakes and sliding the tires. Locked brakes and sliding tires do not indicate brake efficiency.
Proper rear brake adjustment is crucial in diagnosing brake problems. Rear drum brakes which are out of adjustment will result in a low pedal and a loose emergency brake.
If there is a problem with the "feel" or travel of the brake pedal or parking brake always adjust the shoes/linings first.
WARNING: Before test driving any vehicle, perform the following checks:
1. Depress the brake pedal to check for adequate pedal reserve (minimum of 25%). If the pedal sinks to the floor, do not test drive the vehicle.
2. Check the fluid level in the master-cylinder and refill as necessary.
3. Test the emergency brake. Adjust or repair as necessary prior to test driving the vehicle.
4. Obey all traffic and safety regulations.
5. Perform a series of low speed stops and verify the brakes have sufficient stopping power for a safe test drive.
WHERE TO TEST DRIVE
The test drive location should be:
- Free of all other traffic.
- Relatively smooth, level, and uncrowned.
- Free of gravel or bumps.
To determine if the problem is in the front or rear braking system, first apply the service brake pedal, then apply only the parking brake.
- If the condition (i.e. pull, vibration, pulsation) occurs only with the service brake, the problem is in the front system.
- If the condition occurs when the parking brake is applied (and does not occur with the service brake applied), the problem is in the rear system.
WARNING: Be careful not to inadvertently lock up the wheels when braking with the parking brake, you may not be able to quickly release it.
The brake system should be tested at different vehicle speeds using both light and heavy brake pedal pressure.
Avoid locking the brakes and sliding the tires. Locked brakes and sliding tires do not indicate brake efficiency.
Proper rear brake adjustment is crucial in diagnosing brake problems. Rear drum brakes which are out of adjustment will result in a low pedal and a loose emergency brake.
If there is a problem with the "feel" or travel of the brake pedal or parking brake always adjust the shoes/linings first.
WARNING: Before test driving any vehicle, perform the following checks:
1. Depress the brake pedal to check for adequate pedal reserve (minimum of 25%). If the pedal sinks to the floor, do not test drive the vehicle.
2. Check the fluid level in the master-cylinder and refill as necessary.
3. Test the emergency brake. Adjust or repair as necessary prior to test driving the vehicle.
4. Obey all traffic and safety regulations.
5. Perform a series of low speed stops and verify the brakes have sufficient stopping power for a safe test drive.
WHERE TO TEST DRIVE
The test drive location should be:
- Free of all other traffic.
- Relatively smooth, level, and uncrowned.
- Free of gravel or bumps.
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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.