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4 Wheel Drive/SUVs/1999 ford f150 wipers


QUESTION: 1999 ford f150 windshield wiper won't turn off,  stays on, will switch from low to high speed but no intermittent or off.. when turning off the key the wipers stay in whatever position they are in on the windshield. will come right back on when vehicle is started again...


This could be a couple of things, from a bad wiper switch, bad ground or the motor itself.  I have seen the contacts in the motor short out and do this.

Rather than sending you a detailed troubleshooting explanation, here is a site to go to that explains the possible causes, and repairs for this type of problem.


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QUESTION: the links for the pinpoint tests do not work.... still have no idea how to trouble shoot the problem.


Without being there, and able to trace out the wiring, I would suggest that you purchase a repair manual for the vehicle.  These are reasonable, and have troubleshooting tips, along with wiring diagrams.
If this doesn't help you, you may have to take it to a reputable auto electric shop.


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Carl Brandt


Will discuss suspensions, lifts, lockers along with tire suggestions. Trail ratings and possible requirements needed for specific type of trails. Safety equipment and what you should carry with you. Certified off-road instructor. I am not a mechanic, and 4-Wheeling is a hobby, so if I can't answer a technical question it is due to my mechanical knowledge being related to vehicles that I have owned, or have worked on. I do not have manuals on all vehicles, and I suggest that you obtain a repair manual for mechanical problems and do some research before asking your question. Most mechanical questions can't be answered completely without looking at, or listening to the vehicle in person.


40 plus years of 4 wheeling in a variety of vehicles. At the present time, my major off-road rig is a 94 Jeep Wrangler with a spring over and a 1 1/2" suspension lift. This gives me a total lift of 7" or so. I have lockers front and rear. I have removed the track bars, and sway bar for maximum articulation. I am running a stock 2.5 ltr 4 cylinder with a Jacobs ignition along with a cold air high flow filter. It has 4.56:1 gears with a Dodge NV4500 transmission along with a 3.8:1 Atlas II transfer case. This gives me a final ratio of 105:1 in low gear/low range. Other vehicles I own, are a 96 Ford F-250 with a 6" lift, posi rear end, 36" Hummer tires, 5 speed with a fuel injected 460 ci engine, an 87 Samurai with an 8" lift, Ford 9" rear end with a spool, Chevy Dana 44 front end with an electric locker, 5.88 gears, 16% reduction in high range and a 6.5:1 low range with 35" Baja Claws, and a stock 2003 Grand Cherokee Overland. Trails I have run are the Rubicon (10 times), Dusey Ershim, Fordyce Creek trail, McGrew trail, several trails in Moab, Utah along with local monthly runs.

Lost Coast 4x4's Cal 4-Wheel Corva UFWDA Blue Ribbon Coalition

Certified off-road instructor - Certificates in engineering/electronics

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