One problem related to engine funny noise has been reported for the 2003 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford F-150 based on all problems reported for the 2003 F-150.
After a rainstorm and while driving, my windshield wipers stopped working, my radio/cd player started turning off and on, my panel light dimmed, and I heard a clicking noise under my driver side dash board. There was also a clicking noise coming from the engine. While stationary and key out of the ignition, I noticed water on the driver side floor, and when I looked under I could see drops of water sliding off I believe my emergency bake and brake pedal, and an ongoing clicking sound under the steering wheel. I left my truck in driveway overnight, and the next morning my battery was dead. I had aaa tow come and replace battery that afternoon. The next morning the battery was dead again. Aaa came and checked the starter and alternator, all were fine. As they recharged battery there was a weird noise heard in the engine area. I drove it to a mechanic with Ford truck experience. He stated the gem and fuse box were wet and attributed it to water leakage coming from the windshield weather stripping trim which was common in Fords vehicles. He recommended replacing gem, fuse box, and windshield trim. This water/electrical problem happens every year after a rainstorm. I never thought a vehicle in good condition could have outside water leaks getting inside and onto the fuse box and gem module. The mechanic told me it can become very dangerous for the gem and fuse box to fail because it controls everything in the truck. The gem and fuse box should be protected from outside elements. When water is introduced to these modules, it makes the whole system go wacky and can cause serious and possibly dangerous situations. Ford needs to acknowledge that this is a manufacture defect and fix and/or reimburse us consumers on the cost of fixing it.