1987 ford ranger turn signals keep blowing fuses. have changed flasher fuse and switch on column. just keeps blowing?
first thing i guess to understand what is going on here ,is a little back to basics on how turnsignals work , first item you have is power fuse then it's off to flasher module than it goes to the turnsignal switch on colum ,of course anywhere on it way to there the power could got to ground and cause the fuse to trip, now the power depending on Left or right selection , is directed to lights on both front and back of truck,thankfully rangers don't have em on the side) now any place in this pathway the wire could go to ground and blow the fuse, now to troubleshoot and narrow down the area that fault is located , (1) replace fuse with correct size and ck for proper fit in fusebox and start and operate truck for a few minutes DO not use turnsignals, ck fuse is it still good if so go to step 2 if not stop and ck wire conditions in steering colum and switch(2) start truck and try right hand turn signal only verify lights working ,Ok yes/no if not replace fuse and try left side same way, Ok yes /no if right or left side only blows fuses take ALL bulbS OUT of lights and try again , if fuse still blows then look for wire fault on that side of truck if fuse is still good then look carefull at light bulb sockets for rust and powered corrosion (ill bet an 87 has some ) you may need to replace bulb sockets , they do sell em in autoparts stores .
Jun 30, 2014 |
1987 Ford Ranger