Blower fuse overheating
#2588526
12/07/18 12:18 PM
12/07/18 12:18 PM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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Posts: 2,412
Weatherford, Texas
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This seems to be a common problem on mid 70s Dodges...is there a common problem/cure. I've already changed the blower motor. This happens to be on a 74 truck but I've seen it occur on others also? 20amp fuse gets extremely hot but doesn't blow out?
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: Blower fuse overheating
[Re: rustbuckett68]
#2588594
12/07/18 02:11 PM
12/07/18 02:11 PM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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Thanks for the input guys, been laying under the dash checking wires and connections, pulled the glove box liner and was able to disconnect this from the bottom of the melted fuse location, the other connection looks about the same but is part of a "bar" and not removable...could this be it?
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: Blower fuse overheating
[Re: Slotts]
#2588607
12/07/18 02:27 PM
12/07/18 02:27 PM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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It's tight but corroded and as a side note this came from the melted side which is also the ground side. May not mean anything but it shows continuity from end to end.
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: Blower fuse overheating
[Re: RapidusMaximus]
#2588608
12/07/18 02:28 PM
12/07/18 02:28 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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As said yes. A HF $9.99 dremel tool/kit works perfect for getting the inside of those tangs to bare metal. In addition there may be poor continuity in the crimp/rivet of that fitting but for a good start I would dremel it & hook it up under the hood with some jumpers from battery to fuse terminal to blower & run it & see if that terminal assy all stays cool by hotwiring the blower for several minutes. EDIT then if all good, reinstall it in the fuse holder box in the pic.
Last edited by RapidRobert; 12/07/18 02:35 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Blower fuse overheating
[Re: RapidusMaximus]
#2588622
12/07/18 03:06 PM
12/07/18 03:06 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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up yours
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Rusty connections are poor conductors and can cause your issue.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Blower fuse overheating
[Re: RapidusMaximus]
#2588688
12/07/18 05:38 PM
12/07/18 05:38 PM
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Joined: Jan 2003
Posts: 21,079 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,079
Niles , Ohio
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They had problems with the blower speed switch also.I replaced quite a few when I had my Rams.Rocky
Chrysler Firepower
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Re: Blower fuse overheating
[Re: therocks]
#2588714
12/07/18 06:37 PM
12/07/18 06:37 PM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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Well, after a couple hours standing on my head...ugh...under the dash looks like a lot of the wiring has been "warm", gotta love these old vehicles, guess I'll just take it wire by wire, plug by plug. The three way switch may be a good call, it's plug in's are cracked and broken and mechanically it isn't very smooth. Thanks for everyone's input, I'll keep plugging along
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: Blower fuse overheating
[Re: TJP]
#2589508
12/09/18 06:53 PM
12/09/18 06:53 PM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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Update: thanks to everyone's suggestions and input, disassembled and cleaned every connection I could, including the grounds, put it all back together and now the fan blows on all three speeds without warming the fuse...sweet...but what a pain, lol
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: Blower fuse overheating
[Re: RapidusMaximus]
#2589527
12/09/18 07:39 PM
12/09/18 07:39 PM
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Joined: Jan 2008
Posts: 3,886 Lost and Spaced
bboogieart
master
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master
Joined: Jan 2008
Posts: 3,886
Lost and Spaced
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Glad you got it sorted. Got some wiring to do myself this winter. At least I have the seats out of the way. Werkin upside down under the dash aint quite what I consider fun. Nice once you get it done though.
I have mechanical Aptitude. I can screw up anything.
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Re: Blower fuse overheating
[Re: bboogieart]
#2589652
12/10/18 12:12 AM
12/10/18 12:12 AM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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Glad you got it sorted. Got some wiring to do myself this winter. At least I have the seats out of the way. Werkin upside down under the dash aint quite what I consider fun. Nice once you get it done though. Thanks! Yes, working under the dash is no fun
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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