Ford F - SeriesThe Ford F-Series lineup offers a plethora of models for every occasion or occupation, starting below $20,000 and climbing beyond double that. The F-Series line offers something on the order of 75 permutations, more than some car companies' entire lineups. All are capable of work or play, even those models with luxurious interiors, and all have four doors.
is this gas or diesel? see if you have water around or over the fuse box (windshield leak) getting GEM wet, also check the wiring harness laying on the engine for damage(rubbing). if diesel check plug at cam sensor,clean and grease it.
My 99 F350 7.3 shuts down or misses when raining, all the above I have been told can make this happen, I done all this but it still happens, will post if I get it fixed.
Last edited by olddude; 11-02-2007 at 10:03 AM..
Reason: more info
Rain causing the vehicle to run poor is usually evidence of poor plug wires, and/or a comprimised cap and rotor, sometimes is it is also evident of a MAP sensor, but try a good tune up first.
mine got to where it would do it even on dry days for some reason the wires from the turbo to under the battery where getting chafed cut wire back about two inches from plug solderd and shrink wrap them back together and ran great i had changed turbos and that box on side twice and of all things this fixed the problem. hope this helps lol:
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2002 F350 misses in the rain 
ford f 350 missing in rain 
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