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Post by mississippimud on Apr 10, 2007 18:04:57 GMT -5
I have a 1983 TOy truck. The charging system is on the fritz, I am farely sure that the 7.5 amp fuse is the problem. According to my wiring diagram it is located under the hood. I found it and i have no continuity threw it so I figured its bad. I tried to put an inline 7.5 and POOF it blew. So that little (so called) fuse on my diagram is more than a fuse. Anone know what it is or called? the number on it is 90980-04038 about 3/4 inch square with wire lead in and a wire lead out I have voltage going in and none coming out. I have about pulled my hair out over this. I am a new guy to this forum. Maybe someone can help me.
Thanks Ya'll
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Post by 92rocdoc on Apr 10, 2007 19:56:04 GMT -5
Alright it is easy to say, but to do is a total different world. Here it goes. You got something wrong with the electrical system somewhere else. You could be looking at pulling the entire harness out stripping all of the ribbed protective tube off and taking a look. Things to look for:
Melted coating on wires causing an arc between two different wires
Pinched wires that will cut off the circuit
completely cut wires not allowing any charge and possibly arking out on the body or the frame.
check your other fuses, some of the fuses are linked in with other circuits (lights, switches, etc.)
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Post by mississippimud on Apr 11, 2007 21:37:30 GMT -5
ok 92rocdoc...i burnt(well trk did) the white with black tracer(ground and the redwith white tracer from the dimmer/headlight switch.. got that traced back but dont see any tie to the charging system, looks like i have 2 seperate issues. Ill keep feeding info till someone bites on it....like I said talkin out loud (or typing in this case)makes me think ..and my wife...lol...she dont have a clue what to tell me I think she said get another truck...hmm....lemme see if she wants a 1979 4x4 toyota....lol
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Post by fourwd1 on Apr 12, 2007 7:50:02 GMT -5
I have a 1983 TOy truck. The charging system is on the fritz, I am farely sure that the 7.5 amp fuse is the problem. According to my wiring diagram it is located under the hood. I found it and i have no continuity threw it so I figured its bad. I tried to put an inline 7.5 and POOF it blew. So that little (so called) fuse on my diagram is more than a fuse. Anone know what it is or called? the number on it is 90980-04038 about 3/4 inch square with wire lead in and a wire lead out I have voltage going in and none coming out. I have about pulled my hair out over this. I am a new guy to this forum. Maybe someone can help me. Thanks Ya'll It's a fusible link, between the alternator output/voltage regulator and the battery. A bad alt or reg could becausing a short to ground. Get a DMM and start troubleshooting. |
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Post by mississippimud on Apr 12, 2007 21:18:56 GMT -5
never found the fusable link between the out and reg. but I did get mad and knock the hell outta the alt and hmmm....starting puttin out. I aint sure where the person I got his truck got it from nut its a POS....I am gonna get a alt from a dependable source in the morning and go from there..by the numbers on it after calling around it was from oriellys....i carried up there and had them check it, its puttin out about 6 vlts you smack it good it will go to 13.7 or so...they had a replacemant but after the experience with the first one well I had to check it before i left the store.guess what it was puttin out.........................1.................2.................
NOtta not one volt...Thats why I always go to Carquest. Good Parts...Ill start fresh 2morrow with a good alty and let yall know if i have other issues. Thxyall for your help.cant wonder why it wont charge unless you knock the brushes around...hmm...cheapo depo parts.
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Post by mississippimud on Apr 15, 2007 13:08:12 GMT -5
still wont carge....I have voltage on the black wire coming out off the back of the alt. But if I plug my alternator connector up it arcs, and I dont know what else to look for. I have traced the black wire it goes to ground why should it have 12 volts?
Please help...I am so irriated and out of ideas.
Thanks
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Post by 92rocdoc on Apr 15, 2007 17:40:26 GMT -5
Check your voltage regulator and your brushes.
Scott
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Post by mississippimud on Apr 17, 2007 19:20:23 GMT -5
92rocdoc. We have checked ever thing n the world on this blame trk, with a couple jumper wires we can get it to charge. The bottom line is the wire on brown wire goin to the alt. is not getting grounded inside the voltage reg. that is what energizes the alt to charge. So with 2 volt regs and no way to make sure they are good. I am going to go get a third reg. Maybe these 2 are not anygood. oh well my trouble continues
thanks
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Post by mississippimud on Apr 18, 2007 20:24:27 GMT -5
Waiting on parts...l let yall know tommorrow if my woes come to a woeeeee...Hopefully so, I am ready to drive this BEAST...lol......
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Post by mississippimud on Apr 19, 2007 22:20:31 GMT -5
FIXED IT.(SMILE) after a week er two well in my extra tim I have redone the entire iwreharness and pulled all my hair out 2 bad reggys from a parts house but by golly I got it now....shes charging like a fresh bull with aints in his pants. The charge light relay was acting like a woman that thinks she is sassy as sas can get. I got me a charge light relay out of a 79(kinda looks like a alt reggy) metal case and 2 wires 1 in and one out, i grounded it good and wired it up. Works like a dream, I didnt get the 95 dollar relay from the dealer wasnt sure that was the prob, but 5 dollars later from a junk yard...HELL YEAH FIXED..ill have pics and stuff soon. I know i wore alot of you guys out worriing ya about this truck but its gonna be worth it..THXS ALL YALL
Bill
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Post by 92rocdoc on Apr 19, 2007 23:12:00 GMT -5
Good job, wiring can be a pain in the ass sometimes. Am I right, or am I right, or am I right?
Scott
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Post by mississippimud on Apr 21, 2007 20:35:26 GMT -5
ok heres the deal if anyone cares, the charge light relay is about a hundred bucks in my area and they are no 81-83 trucks to find in a salvage yard. you can take an earlier with is 2wd and 4wd get the charge light relay, looks like a metal box with 2 wires. right hand kick pahel, gorund the metal box and put the B to battery and the L terminal to the dash light.
92Rocdoc thaxs for your help...yall be good be back soon.
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