A couple fuse questions
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Joined: Sep 2007
Posts: 9,453
From: Houston, Texas
RE: A couple fuse questions
If only the temp gauge doesn't work, start by disconnecting the temperature sending unit (located below and slightly forward of the distributor) connector and then grounding the single wire to the engine with the key turned to ON. The temperature gauge reading should rise (disconnect before it reaches max temp). If the temp reading doesn't rise, the problem is the gauge itself. If the temp reading rises, then the sending unit is bad.
Here's the circuit diagram for the horn:
Here's the circuit diagram for the horn:
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HCF Member
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Posts: 50
RE: A couple fuse questions
So for the temp gauge, I disconnected it and stuck a wire inside the connector (so I didn't have to take it and re-strip it) and touched the wire to the top of the engine, turned the key to 'On' and the gauge did not move. Now, I'm assuming I must replace the gauge and hope they aren't too much.
As for the horn I have yet to do this.
As for the horn I have yet to do this.
Recognized HCF Member
Joined: Sep 2007
Posts: 9,453
From: Houston, Texas
RE: A couple fuse questions
Yeah, if the wire was making good electrical contact with the terminal of the sending unit connector and a metallic engine part, then the gauge itself is most likely bad. Another possibility is a bad wire running between the sending unit and temperature gauge, though this seems less likely if the wire looks fine.
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RE: A couple fuse questions
The gauge is powered from the same circuit that runs the gas gauge and the speedometer (if it is a 1992 or later model with electronic speedometer). So if those still work but the temperature doesn't go up to hot when you ground out the wire, it has to be the gauge itself or the wiring.
On the horn, start by testing the horn itself by jumping it to the battery. They get corroded and quit. If the fuse, button, and cable reel are good you should hear the relay clicking under the dash when you press the button.
On the horn, start by testing the horn itself by jumping it to the battery. They get corroded and quit. If the fuse, button, and cable reel are good you should hear the relay clicking under the dash when you press the button.
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RE: A couple fuse questions
ORIGINAL: mk378
The gauge is powered from the same circuit that runs the gas gauge and the speedometer (if it is a 1992 or later model with electronic speedometer). So if those still work but the temperature doesn't go up to hot when you ground out the wire, it has to be the gauge itself or the wiring.
On the horn, start by testing the horn itself by jumping it to the battery. They get corroded and quit. If the fuse, button, and cable reel are good you should hear the relay clicking under the dash when you press the button.
The gauge is powered from the same circuit that runs the gas gauge and the speedometer (if it is a 1992 or later model with electronic speedometer). So if those still work but the temperature doesn't go up to hot when you ground out the wire, it has to be the gauge itself or the wiring.
On the horn, start by testing the horn itself by jumping it to the battery. They get corroded and quit. If the fuse, button, and cable reel are good you should hear the relay clicking under the dash when you press the button.
When I press the horn button on the steering wheel I do hear a clicking sound. I believe I hear it coming from right where I push it, meaning right behind the button or somewhere near there.
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I know this post is a little old, but I totally forgot about taking care of this. I figure since I'm under the hood now, I can add it to my list again.
Which one of these is the wire that runs to my temp gauge?
The single wire correct? I've tried grounding it to the engine and turning the key on and it does not move.
Do I ground this piece or the piece at the other end of the plug?
Oh, forgot to mention the gauge don't work at all. It doesn't bounce, or go up, or go down. It does nothing and always has since I've had it.
Which one of these is the wire that runs to my temp gauge?
The single wire correct? I've tried grounding it to the engine and turning the key on and it does not move.
Do I ground this piece or the piece at the other end of the plug?
Oh, forgot to mention the gauge don't work at all. It doesn't bounce, or go up, or go down. It does nothing and always has since I've had it.
Last edited by CrunchyToast; Jul 20, 2009 at 01:17 PM. Reason: Update Info
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