Brake light

rungunner · #1 (**permalink**) 05-15-2008, 05:33 PM

Driving down the road the brake light will pop on for a minute and then go off. what do you think would cause this problem? Brakes are new all the way around and work very well. 1997 f-350/ 7.3 diesiel
Thanks

alchymist · #2 (**permalink**) 05-15-2008, 05:38 PM

My guess would be a loose brake switch...if it's a mechanical switch on the brake pedal and it's loose, it can bounce around and activate itself......easy enough to check ...should be mounted next to the brake pedal arm.

projectSHO89 · #3 (**permalink**) 05-15-2008, 06:20 PM

If you are referring to the red BRAKE warning lamp, check your brake fluid level.

If that's okay, the e-brake switch is probably flaky or the e-brake lever is not retracting completely.

Steve

rungunner · #4 (**permalink**) 06-26-2008, 02:47 PM

I replaced both switches and still have the brake light come on. I think something is hanging up in the right rear wheel because after driving for awhile the rim gets hotter than drivers side. I changed the brake caliper on the right side and the drum and shoes are new and everything looks good, I am not sure what is going on but it is driving me nuts. Any suggestions?

Lazy K · #5 (**permalink**) 06-27-2008, 07:51 AM

If your truck has a vacuum brake booster then the vacuum pump may be down a bit. Low vacuum can cause a warning light. If you have hydraboost then I don`t know about it.