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Forward Look Technical Discussions -> Electrical, Battery and Charging | Message format |
Chrome58 |
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Expert Posts: 1316 Location: Belgium, 40 miles south of Brussels | Hello, It's been bothering me for 2 years now : the fuel gauge does not work on my '58 Plymouth. It never worked since restoration ended. After start up, the needle goes approximatively to the middle of the range and stays there, whatever is in the tank. At first, I thought that the ground was faulty, since I did not have a metal thingy between the sender and the steel line. I bought one, installed it, but same thing. How can I check if it's the gauge that's faulty or not, before disassembling the sender ? Thanks. Edited by Chrome58 2019-04-29 11:53 AM | ||
56D500boy |
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Expert 5K+ Posts: 9911 Location: Lower Mainland BC | How easy is it to take the sender out of the tank. Since the sender is just a float with a contact on a variable resistor (rheostat), it sounds like the issue is with the rheostat or the float is hanging up/getting stuck and not going through the full swing that it should with a more than half full tank. Otherwise, it could be an issue with the gauge itself. (The ground must be good enough if you are getting any signal at all) Example (only) fuel gauge sender: | ||
57chizler |
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Expert Posts: 3778 Location: NorCal | Remove the wire at the sender and ground it to a GOOD ground, turn the key to ON and the gauge should climb to FULL. If it does the gauge is good. | ||
60 dart |
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Expert 5K+ Posts: 8947 Location: WHEELING,WV.>>>HOME OF WWVA | wrong sender --------------------------------------------------------later | ||
Chrome58 |
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Expert Posts: 1316 Location: Belgium, 40 miles south of Brussels | 57chizler - 2019-04-29 7:52 PM Remove the wire at the sender and ground it to a GOOD ground, turn the key to ON and the gauge should climb to FULL. If it does the gauge is good. Thanks, I did just that, and the gauge is working OK. Therefore, the problem is in the sender. | ||
wizard |
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Board Moderator & Exner Expert 10K+ Posts: 13054 Location: Southern Sweden - Sturkö island | Or in a bad ground between the tank and body/frame. Try to pull a temporary earth wire directly from the tank send to a good ground. If this is not helping, then the sender is gone (or blocked by rust and sand). | ||
ronbo97 |
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Expert Posts: 4043 Location: Connecticut | Is it the original sending unit or aftermarket ? Many of the aftermarket senders are not calibrated correctly and could cause this issue.Ron | ||
Chrome58 |
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Expert Posts: 1316 Location: Belgium, 40 miles south of Brussels | wizard - 2019-05-01 1:38 PM Or in a bad ground between the tank and body/frame. Try to pull a temporary earth wire directly from the tank send to a good ground. If this is not helping, then the sender is gone (or blocked by rust and sand). OK I'll try that. Thanks. ronbo97 - 2019-05-01 4:57 PM Is it the original sending unit or aftermarket ? Many of the aftermarket senders are not calibrated correctly and could cause this issue.Ron It's an aftermarket. | ||
Chrome58 |
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Expert Posts: 1316 Location: Belgium, 40 miles south of Brussels | This thread will be useful : http://www.forwardlook.net/forums/forums/thread-view.asp?tid=71260&... | ||
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