 fuel gauge sender, Bench testing |
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| 80cap |
 Dec 5 2016, 01:46 PM
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#1
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Member  Group: Members Posts: 317 Joined: 6-February 15 From: ohio Member No.: 18,405 Region Association: None  |
Before I install my fuel tank is there a way to bench test the fuel level sending unit?
Thanks Brian |
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| Dave_Darling |
Jan 25 2017, 10:29 PM
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#2
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914 Idiot Group: Members Posts: 14,981 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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The warning light contacts are on the same float as the gauge sender stuff, so it is unlikely that the float is getting stuck.
It could be that there is a short or problem in the resistance wire inside the sender, or it could be that the gauge is wonky. We tell people to always trust the light over the needle on the gauge. --DD |
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| HansJan |
Jan 25 2017, 10:52 PM
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#3
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Member Group: Members Posts: 394 Joined: 5-April 16 From: Sugar Land TX Member No.: 19,860 Region Association: Southwest Region
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QUOTE(Dave_Darling @ Jan 25 2017, 10:29 PM)  The warning light contacts are on the same float as the gauge sender stuff, so it is unlikely that the float is getting stuck. It could be that there is a short or problem in the resistance wire inside the sender, or it could be that the gauge is wonky. We tell people to always trust the light over the needle on the gauge. --DD Thanks Dave, I will start looking for a new/used gauge. Br, Hans Jan |
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| bdstone914 |
Jan 26 2017, 09:42 AM
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#4
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bdstone914 Group: Members Posts: 4,515 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(Hans Jan @ Jan 25 2017, 10:52 PM) QUOTE(Dave_Darling @ Jan 25 2017, 10:29 PM) The warning light contacts are on the same float as the gauge sender stuff, so it is unlikely that the float is getting stuck. It could be that there is a short or problem in the resistance wire inside the sender, or it could be that the gauge is wonky. We tell people to always trust the light over the needle on the gauge. --DD Thanks Dave, I will start looking for a new/used gauge. Br, Hans Jan I have several fuel tank gauges. Cheap. What year is the car ? Silver dot center? The connectors on the fuel gauge are different. You can just replace the fuel gauge portion. You can test the gauge by grounding the sending unit wire and it should peg the gauge. Bruce |
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| seatosummit |
Jul 20 2021, 10:55 PM
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#5
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Newbie Group: Members Posts: 19 Joined: 23-December 20 From: Berkeley Member No.: 25,012 Region Association: None |
QUOTE(bdstone914 @ Jan 26 2017, 08:42 AM) QUOTE(Hans Jan @ Jan 25 2017, 10:52 PM) QUOTE(Dave_Darling @ Jan 25 2017, 10:29 PM) The warning light contacts are on the same float as the gauge sender stuff, so it is unlikely that the float is getting stuck. It could be that there is a short or problem in the resistance wire inside the sender, or it could be that the gauge is wonky. We tell people to always trust the light over the needle on the gauge. --DD Thanks Dave, I will start looking for a new/used gauge. Br, Hans Jan I have several fuel tank gauges. Cheap. What year is the car ? Silver dot center? The connectors on the fuel gauge are different. You can just replace the fuel gauge portion. You can test the gauge by grounding the sending unit wire and it should peg the gauge. Bruce Hey bdstone914- Do you still have fuel level gauges available? If so, I would love to buy one. Please PM me. Cheers, Austin |
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Posts in this topic
80cap fuel gauge sender Dec 5 2016, 01:46 PM
Dave_Darling There should be three (possibly four) electrical c... Dec 5 2016, 02:18 PM 80cap Thanks Dave!
Well like most things so far on m... Dec 5 2016, 03:07 PM 914Bryan Does anyone have pictures of this? Dec 6 2016, 10:03 AM jim_hoyland :agree: Just went through this. The inside of the... Dec 6 2016, 09:49 PM Hans Jan Just ran out of gas this evening. The reserve ligh... Jan 25 2017, 09:59 PM
Dave_Darling
I will start looking for a new/used gauge.
I su... Jan 26 2017, 02:23 PM fixer34
The warning light contacts are on the same float ... Feb 12 2017, 02:14 PM Hans Jan Have not yet figured out how to read the resistanc... Jan 26 2017, 06:51 PM Hans Jan See pic Jan 26 2017, 06:51 PM Dave_Darling One of the three pins is ground, one is the signal... Jan 26 2017, 10:50 PM Hans Jan After removing I find the following readings:
Upsi... Jan 27 2017, 03:10 PM Dave_Darling We had similar trouble when we bought the wife... Feb 12 2017, 09:15 PM 914Sixer Take the sending unit and let it soak in a some la... Feb 12 2017, 09:57 PM forrestkhaag For what it is worth, I had to open my sender tube... Feb 13 2017, 11:52 AM Costa05
For what it is worth, I had to open my sender tub... Nov 30 2020, 11:46 PM Red76 The real thin wires on the outside edges of the fl... Nov 3 2017, 02:11 PM neilbardsley I'm having a problem with my fuel sender/gauge... Apr 13 2021, 01:39 PM Retroracer So that would point to either wiring or gauge bein... Apr 13 2021, 02:25 PM neilbardsley
So that would point to either wiring or gauge bei... Apr 14 2021, 12:50 AM Cairo94507 I just replaced my fuel sender. It was sticking a... Apr 14 2021, 07:17 AM neilbardsley Ok. It's not the wiring. 1 ohms resistance o... Apr 16 2021, 01:21 PM euro911 Here's a good thread on testing and refurbishi... Apr 16 2021, 02:07 PM neilbardsley
Here's a good thread on testing and refurbish... Apr 16 2021, 02:51 PM Retroracer Neil - so it does sound like a sender issue. Pres... Apr 16 2021, 04:50 PM neilbardsley Thank you. Yes connecting directly to ground move... Apr 16 2021, 11:53 PM |
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