Idler pulley :
Model Year
Skill Code
Factory Time
MOTOR Time
IDLER PULLEY, R&R
Expedition, Navigator,
One ...................................
2003-04
B
0.4
0.5
Two Or More ...........................
2003-04
B
0.4
0.5
Model Year...
Is the noise happening during low or high speed, or both?
Did you check the transfer case if it has enough fluid?
You can check the actuators right at the solenoid on the passenger firewall (engine)
The actuator is a common issue with the expeditions due to the way was designed and not protected...
Suggest to try going after the P0303 first.
Stick with the Motorcraft SP-479 Spark Plug and cant go wrong. Make sure the are gapped at .34 or so.
Swap #3 coil and plug with #1 coil and plug.
When removing coils and plugs make sure there is no coolant in the spark plug well
Run engine and see if...
Hello. I have a 03 . Issue on mine ended up being a bad flex brake hose. Did not look bad at all, but inside it developed an issue and was restricting fluid back to the reservoir, and not to the calipers. It acted almost like a one way valve and forced the caliper to be stuck intermittently...
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