253 Built

I got a 1994 Del Sol and i as driving today and it just shut off and had no power. I discovered the battery fuse was blown and I had extras so i tried another one (100A), and it blew as soon as I started screwing it in. So I decided to try one more and same thing.

I was just wondering if anyone else has had this problem before, if so what caused it, and what are the possibilities of things that could be causing it to keep blowing the fuse. I figure its just a bare wire somewhere grounding itself out and shorting out the fuse, but I am not good with wiring and electrical.

Please Help, my drivers side window is stuck down since i have no power without a fuse.

Thanks in Advanced

Fliptard

FIrst, check your grounds. From battery, valve cover to frame, and there is one on the thermastat housing, clean them off and make sure they are tight and the wire is connected to the connectors good and tight. Also, go over your wire harness and just see if you can't find a wire somewhere that is rubbing and shorting out.

253 Built

Yeah i already checked all ground wires and they are good, i will have to wait til thursday to go through the harness though. Also i got a alarm, should i check the wiring under the dash and make sure there are no exposed wires rubbing on something? and is there anyway to roll my window up? cause in washington we never know when its gonna rain lol.

Thanks Flip

apexi_rsx

i would definately look over the alarm harness because ive found alot of these run to the fuse box and not to a direct power source.

253 Built

Yeah i will check over it in the morning before work, anyone know anyway i could get my window rolled up so I dont gotta leave it down all night?

lazlong

^^ You need your cordless drill battery and 2 wires. Remove the inner door panel and unhook the connector for the window motor. Both the motor and the cordless battery have 2 posts so, you can't really screw it up. Run 1 wire from 1 post on the battery to 1 post on the motor connector and the other wire from post to post. As soon as you connect the second wire the motor will start to turn so, I hope you're not jumpy. lol. If you don't have a cordless battery run wires to the battery or remove the battery and take it to the window.

***DO NOT TOUCH THE WIRES TOGETHER***

253 Built

Got it!

Thanks Lazlong.

253 Built

Now just too find out why my car is hsorting out the battery fuses left and right. Anyone know any auto parts stores that sell the battery fuse? cause they are shorter than all the ones i have found at any auto parts stores.

Former User

Did the fuse blow with the ignition switch turned off? If so, check whether unplugging the connectors to the ignition switch prevents the fuse from blowing. Do you have a multimeter?

By the way, don't install a 100A fuse in that slot. Use only a 50A fuse. Otherwise you may burn up your wiring and start a fire.

253 Built

Yes it blows without the key even in the ignition at all. if I unplug the ignition switch connectors and it doesnt blow what does that mean? and also where can i get a 50A battery fuse?

Former User

Do you have a multimeter?

253 Built

yes i got a mutimeter.

253 Built

what would you like me to test with the multimeter?

253 Built

can anyone tell me what unplugging the ignition switch will solve?

Former User

Just to verify, 50A hood fuse 39 is blowing, right?

For this test, fuse 39 can be blown - no need to install a good fuse. Key is off.

Set the multimeter to read DC voltage (on the lowest voltage scale, such as 20V, if it is not auto ranging). There are two metal screws on either side of fuse 39. Touch your red meter probe to one of the screws and the the black meter probe to the ground post of the battery. Note the voltage reading. Do the same test but for the other screw flanking fuse 39. Note the voltage reading.

Post the two voltage readings.

253 Built

its fuse 41 blowing, according to my fuse diagram that's the battery fuse...

Former User

Does your hood fuse box look like the one I posted?

Fuse 41 should be an 80A fuse.

----------------
Revised:
For this test, fuse 41 can be blown - no need to install a good fuse. Key is off.

Set the multimeter to read DC voltage (on the lowest voltage scale, such as 20V, if it is not auto ranging). There are two metal screws on either side of fuse 41. Touch your red meter probe to one of the screws and the black meter probe to the ground post of the battery. Note the voltage reading. Do the same test but for the other screw flanking fuse 41. Note the voltage reading.

Post the two voltage readings.

253 Built

Yes it does, and I just went and looked at my fuse box again and and fuse 39 is my ign fuse

And my dad took his multimeter to work so i will have to check the readings in the morning when he gets home. and i will let you know.

egvera89

when did you get the alarm? did this happen before you installed the alarm?

something is getting too much power and causing a short. check your alternator ground also. maybe there's something grounding out like you say. also check all the fuses under your dash to make sure none of those are blown and maybe causing the battery fuse to blow. check the ACG fuse under the dash.

253 Built

No i never had the problem before the alarm was installed. and whats the ACG fuse?

@RON thank you for your help, i will get back to you on the readings in the morning

253 Built

Bump!

Thanks for all the help so far.

253 Built

Just going through all my fuses, and gonna double check all my grounds.

253 Built

If looking at the fuse box from the front of the car, the left screw reads 0.2 and the right screw reads 12.58. what could that mean?

Former User

Very good. Your tests verify that the fuse is blown. But more important, they tell you the screw that read 0.2V is the one to do more tests on (below).

Now set your multimeter to read Ohms (on the lowest Ohm scale if the meter does not have auto ranging). With the key off, touch one meter probe to the (0.2V) screw and the other to the ground (-) post of the battery. What is the Ohm reading?

253 Built

I just tested it and my Ohm reading on that screw is 0.1