Compression Ignition Addict
Join Date: Dec 2007
Location: White Mountains, NH
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1999 - 2003 Ford F-250 Super Duty 7.3L
Bucking and/or stalling when wipers are turned on.
Body/Chassis Electrical, Emissions/PCM/Fuel, Engine Electrical
Faulty Wiper Motor
Test & Fix:
A symptom of bucking and/or stalling in the rain or any time the wipers are turned on, is likely due to a faulty wiper motor. To Test: Check ground G100, located in the left rear corner of the engine compartment. This is the ground for the Lefthand (LH) headlamp, the wiper motor, Powertrain Control Module (PCM) power relay and the fuel pump. A poor ground would generally also cause the LH headlamp to be dim. Repair the ground and recheck for proper operation. If the ground appears OK, check for excessive wiper motor current. If current is excessive, a 'band aid' would be to cut the wiper motor ground wire and run a separate designated ground for the wiper motor alone. The correct repair is to replace the wiper motor.
i have also heard the CPS can also be at fault...
Early 99 7.3 F350 auto,TN T-4 mount with a s467 thanks to unlimited diesel..shimmed 910's, DI push rod's, new alliant 315/200 hybrids, full fuel with a fuel lab 4202,TSD sump...tuned by Gearhead..i cant wait to drop her in the truck...
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88 F250 7.3 IDI plow truck - bone stock