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fuel tank sending unit removal... |
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wetskier2000 
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Joined: September-07-2005 Location: New Hampshire Status: Offline Points: 367 |
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 Topic: fuel tank sending unit removal...Posted: March-01-2021 at 8:01pm |
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Found out that my fuel gauge which used to lie at about 1/8 of a tank, now lies and says I have 1/4 tank of fuel when I have none. Luckily, I was close to a dock where a random stranger kindly handed me 2 gallons of fuel... Can the sending unit be pulled from a 1997 without removing the tank? (you know, that tank I had out recently grrrrr).
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Current: 1997 Nautique
Previous: 1987 Nautique 1964 American Skier |
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 10640 |
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Posted: March-01-2021 at 8:09pm |
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Here's a recent thread by slmskrs in the link
He swapped his with the tank in place but had to bend the old one. Have you checked that your electrical connections are clean and tight? |
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wetskier2000
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Joined: September-07-2005 Location: New Hampshire Status: Offline Points: 367 |
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Posted: March-01-2021 at 9:56pm |
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thanks.. I'll check the connections first, but I did clean both tank connections when I had the tank out... Maybe I'll get lucky on the gauge end...
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Current: 1997 Nautique
Previous: 1987 Nautique 1964 American Skier |
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wetskier2000
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Posted: March-02-2021 at 5:15pm |
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Mystery solved.. pulled the back seat to jumper the sender and ground connections on the sending unit plate..... this worked fine as the gauge jumped right to full... Look closer at connections, sender looks tight and clean. Ground connection, not so much... look at fuel level in tank, maybe 1/4 prolly less..... Gauge reads 1/4+..... wiggle loose ground connection, nothing exciting happens... pull ground, clean connector, sending unit plate, bolt and lock washer... put it all together and tighten down... Gauge now reads 1/8.... I'll call that a win....
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Current: 1997 Nautique
Previous: 1987 Nautique 1964 American Skier |
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KENO
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Posted: March-03-2021 at 6:00pm |
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I guess it's a good thing you checked
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wetskier2000
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Posted: December-14-2021 at 11:25am |
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Sometimes you get the bear, sometimes the bear gets you...
Got the new style sending unit installed, now on to the wiring... New KUS unit has pink and black, says pink is the ground, black is the gauge... Oddly enough the existing 1997 wiring is pink or faded red to the gauge and green to ground. I assume the pink on the old unit post with the 1/4 nut is the gauge and the green with the phillips head screw to the plate is the ground... However, the KUS instructions also say "If your gauge has color coded hookups, maintain this coding as you connect the sender and ground wires."... what the hell does that mean? Keep pink to pink? Old one  New one  |
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Current: 1997 Nautique
Previous: 1987 Nautique 1964 American Skier |
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2840 |
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Posted: December-14-2021 at 12:09pm |
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When in doubt, try both ways. You can install spade connectors. Look at your gauge. Slide the float up and see what happens. You’ll know in a second which is correct. My Spidey-Sense says black is ground and pink is to the gauge.
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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KENO
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Posted: December-14-2021 at 2:47pm |
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Here's an old thread where a KUS sender was hooked up with Pink to ground and Black to the gauge indicator wiring............and it worked
A little "Googling" suggests that as long as one wire goes to ground and the other to the signal wire for the gauge, it'll work, but I'd start with Pink from the sender to ground and then try it the other way if I was feeling adventurous.  |
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wetskier2000
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Posted: December-16-2021 at 10:17am |
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KUS pink wire to Nautique green wire, ground. KUS black wire to Nautique red/pink wire, gauge. Works perfectly. As always, thanks for all the help!
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Current: 1997 Nautique
Previous: 1987 Nautique 1964 American Skier |
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2840 |
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Posted: December-16-2021 at 12:12pm |
Well done, lad.
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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KENO
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Posted: December-17-2021 at 5:12am |
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I guess you weren't feeling adventurous enough to try the JQ spidey sense wiring to see if that worked too?
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KENO
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Posted: December-22-2021 at 6:28pm |
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Well..............having a level sender in one hand and a gauge in the other (both 33 to 240 ohm) today, I figured I'd wire things up pink to ground and black to the signal wire and make sure everything worked correctly, since that's what the first part of the instructions say and we know that works like it did for wetskier.
Then I decided to reverse the wires so pink was to the signal wire and black to ground and see what happened. It was all pretty uneventful since the gauge worked exactly the same as the float was run up and down the shaft. So really the instructions should say something like............hook one wire to the signal wire and the other wire to ground, it doesn't matter which goes where. The instructions for the cheaper, no name versions that you can find on EBAY, Amazon etc. all have the same basic wording that the KUS instructions have, sometimes using different wire colors than pink and black. It's pretty much goof proof unless you're using a new good sender with an old dead gauge or a gauge with the wrong ohm range, or have broken or grounded wiring between the gauge and sender, in which case you'll have problems regardless of how you wire it. I'd only do this with these newer reed switch style senders, not the old style floating arm senders Once again, another example of more than one "right" way to do something
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