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Ford Econoline
Ford F150 5.0L / 5.8L
Water Pump Repair


Removal and Replacement Instructions
(steps 31-40 of 40)

  1. Double-check the tightness of all the fan bolts. It's important that these are tight so that the fan doesn't become loose and wreak havoc under your hood later. The thread-loc you applied in the previous steps should help prevent this from happening as well.
  2. Re-install the upper radiator hose. Attached one end to the water pump and the other end to upper radiator outlet. Tighten the hose clamps on both ends of the hose. Again, if the hose looks worn or is soft and/or bulging this is an ideal time to replace this hose.
  3. Re-install the air intake hose. This is the tiwn-tube hose that attaches to the throttle body. It is secured secured with (2) built-in hose clamps. Make sure the hoses are pushed onto the the throttle body and tighten the hose clamps.
  4. Re-connect the IAT sensor and the PCV line to the air intake hose.
  5. Re-install the air intake box (with MAF attached). Re-install the 4 (8mm) bolts that secure the air intake box.
  6. Re-connect the round air intake hose to the MAF and secure the hose clamp. Re-connect the MAF electrical connector (see previous pictures for locations).
  7. Re-connect the PCV line to the side of the air intake box.
  8. Re-install the air intake snorkel and secure with 1 (8mm) bolt.


NOTE: We chose not to re-install the snorkel as it actually seems to restrict air flow to the engine. The main purpose of the snorket design appears to be to reduce noise (roar) from the air intake system. We opted for more potential power (and more noise).

  1. Make sure the radiator drain plug is in place and tightened. Refill the radiator with 50/50 mixture of anti-freeze and water and replace the radiator cap. You can also add a can of rust-inhibitor and/or water pump conditioner/lubricant to the radiator at this time. Our radiator was relatively new (and clean) and our water pump was new so we chose to do neither. You're call.
  2. Crank the engine and let it run for few minutes. MONITOR THE TEMPERATURE GAUGE. Once the engine reaches operating temperature the thermostat should open and allow coolant to flow into the engine. Look for leaks around (and under) the water pump as well as around any hoses you can see (it's hard to see much under the hood of a van). If you don't see any leaks, turn-off the engine and let it cool. Once cooled re-check the coolant level and add more coolant as needed (you may need to do this 2-3 times before the coolant level is completely full again). If you see leaks, if the engine won't crank, if your engine is making strange noises, etc., refer to the TROUBLESHOOTING page for this repair.

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