blowing fuse 19

[super_stroke]

alright i need some help. for the past two months my truck has been blowing #19 fuse. aux powertrain control module, inst cluster, GEM module, OD cancel switch, idle validation switch, overhead console, diesel PCM via clutch. there is no consistancy to it as time of day, position of the wheel, speed etc. but every time it happened it seem i let off the throttle and hit the brakes and when i let off the brakes it blow's it. it does set off the door locks and the key dinger. door locks go up and down, dinger dings and i have no gauges. now, if i touch the accel pedal just enough to hear the ivs click it stops all that but still have no gauges. usually good for a fuse every few day's to a week. i thought maybe (for a second) that the speed control recall might fix it. Don't know why, just did. but it didn't. any idea's?

[Zaairman]

Unplug your fuel bowl heater

[NCHornet]

I don't think this is a heater problem, they will usually blow right away, not be intermintent like this. Sounds like a short and applying the brakes just makes it make contact and short out and thus blowing the fuse. You need to check for any codes first and do a complete visual inspection of the wiring harness.
Good Luck, I hope it is obvious.

[super_stroke]

there are no codes. i forgot to say i replaced the throttle pedal awhile back too. i put two and two together and figured if the ivs made it stop that was it. but it wasn't. why would it be the heater? unless i lost the line the diagram i have show's no connection to fuse 19.

[Zaairman]

I know its not listed in the manual, but trust me, when the fuel bowl heater shorts out, it blows the PCM fuse, which is fuse #19. I realize that this might not be your problem, however, it is free and easy to unplug and unplugging it won't hurt your truck any.

[NoRalPh]

Originally Posted by Zaairman

I know its not listed in the manual, but trust me, when the fuel bowl heater shorts out, it blows the PCM fuse, which is fuse #19. I realize that this might not be your problem, however, it is free and easy to unplug and unplugging it won't hurt your truck any.

I think you're confusing #19 with #30....

[super_stroke]

no i think he's right. it list's the PCM on 19. but when that fuse blows shouldn't the whole truck die? it still runs and drives fine with that fuse blown it just does the stupid stuff i listed before.

[NoRalPh]

The fuse for the fuel heater is #30.....

A good indication of your PCM not powered is that the WTS (wait-to-start) light won't come on when you turn the key.

[doug_oman]

My fuse blew today for no reason. I stop, and shut the truck off to speak with a guy for a second, and started it back up, and I push the accelerator, and nothing. I didn't have any spare fuses so I had to rob from the dome light.

[super_stroke]

Originally Posted by NoRalPh

The fuse for the fuel heater is #30.....

A good indication of your PCM not powered is that the WTS (wait-to-start) light won't come on when you turn the key.

yeah, when it blows there are no dash lights. wts, batt,abs, nothing.