Ford Ranger owners have reported 4 problems related to cooling fan (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Ford Ranger based on all problems reported for the Ranger.
Carquest water pump new 18420011 (t4188) complete failure after 100 miles. A new water pump was installed onto a 2003 Ford Ranger v6 3. 0 VIN-v truck. He vehicle was driven between 25 - 60 mph off and on for approximately 1 week totaling about 100 miles. Under normal driving conditions (30-35 mph) and with slight acceleration, the bearing housing sheared off from the water pump body launching the cooling fan/clutch into the radiator. Power steering failed (no drive belt) and the cooling system dumped it's contents. The body of the pump is still intact to the vehicle, but the rest of it came off. Upon inspection of an identical part from the same store, there is an apparent casting color difference on the pump. It appears that there is a casting defect present in the pump and the installed pump broke almost perfectly aligned to the casting color differentiation.
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Truck pulls to the right especially at highway speeds. At times severe vibration and rubbing noise. Safety definetly an issue when driving vehicle. More recently 4x4 engaged & truck tilted to front right and made loud grinding noise, could only drive 5mph or so. Put in reverse and was able to drive it at highway speeds but still pulls, vibrates and is getting worse. Now, a oil leak found. Also, anti lock brakes are locking up. Fan motor cooler not working correctly.
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Clutch slave cylinder bolts came out knocking hole through transmition case. Transmission cross member had to be cut out after speed nuts broke loose. Heater failed three times. Thermostat replaced twice didn't help. Bolts holding cooling fan on came out. Switch for dome light failed, and brake rotors warped.
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all problems of the 1998 Ford Ranger
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Intermittently while driving there was vibration in the rear end of the vehicle. Tires were rotated 4 times, but the vibration still occurred. Also, at 5,000 miles, cooling fan bearing/hub squeaked because of moisture build up. The fan belt was replaced. Squeaking noise recurred at 10,000 miles. Dealership lubricated the fan belts. But, the squeaking noise recurred at 35,0000. The fan belt needed to be replaced again.