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On my 95 f-350 my turn signals will begin to flash normally, then after 4 or 5 flashes it will start to flash real fast like one of the bulbs it out, but both front and back signals are flashing, this happens on both sides, and then will go back to normal, then back to fast, im baffled, thanx
The other thing you can try is to wiggle the Multi Function Switch (MFS or turn signal switch) when it starts this. Mine acts up intermittently and if I just wiggle the stick it settles down. I need to pull it out and spray it out real good with contact cleaner. It's just not at the top of my to do list right now.
I know this is an old thread but did this ever get resolved because having the same exact problem?
I don't know about being resolved but I had the same problem. It was fun for a while to see what "beat" the flashers were going to take when you turned on the signal. But, for $2.98 I got a new flasher and it fixed the problem. It is a very high probability it is the problem and a low investment.