30 amp fuse keeps blowing

[STROKEN-J]

OK so my truck would not start the other day (cold out) so i replaced the glow plug relay with one from napa, it was there cheep one for $27.00, they did not have the better one so i said what the hell and went with it. Got home, replaced it and it fired right up. the next morning i was driving to work and it died so i pulled over and checked the relay and i for got to sung up the second big nut (not the one that is always hot the other one) so i snugged it up and when i terned the key the white to start light did not come on so i checked the fusees under the hood and they were OK but the 30 amp fuse under the dash was blown so i replaced it and i was off. So this morning it was about 15* out i went out and unplugged it and started it right up it ran for 30 seconds and blow the 30 amp fuse again, but now when i replace the fuse and turn the key to the on position the fuse blows right away. So with all that said i am going to buy a new glow plug relay form ford this after noon for $102.00 or should i get the good $70 napa one, or is something els going on? What do yall think? HELP

[Clay Henry]

Something is definatey shorting out. I think i heard someone say that the fuel heater runs on this same 30 amp fuse. Can you check amperage there and see what it draws? Check the amperage also of that relay.

[STROKEN-J]

Thanks CHenry i will check that out. Man this suck i just got the truck on the 17th. it just stated the morning after i change the relay so i will check that first. where is the fuel heater located on a 99

[Clay Henry]

Originally Posted by STROKEN-J

where is the fuel heater located on a 99

The heating element is in the filter bowl on top, but i assume there is a relay for that as well and probably located next to the fuel filter. I'm not real sure about the 99s so maybe someone esle should take that question...

[STROKEN-J]

I will pull the cover shield off and take a look see. i did take it off when i replaced the GPR to check the oil level in the high presser oil tank, maybe i bumped or move some wires. the weird thing is that i drove it a lot yesterday with long brakes in between trip (Eng cooled down to cold) and had no prob.. looks like i got some checkin to do.

p.s. your doin great CHenry

[Clay Henry]

Originally Posted by STROKEN-J

p.s. your doin great CHenry

Once in awhile a blind dog gets the rabbit!

[STROKEN-J]

LOL. If it is the GPR should i get the ford part or the good napa part are they about the same quality

[Clay Henry]

Originally Posted by STROKEN-J

LOL. If it is the GPR should i get the ford part or the good napa part are they about the same quality

I would think the NAPA part would be okay....

[STROKEN-J]

Thanks man, I will check it all out after work and let u know what i find out

[Clay Henry]

Hopefully it's just a bad GPR that you bought and you can exchange it for another one.