fuel tank has two sending units?
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comet the dog
Topic author - Posts: 176
- Joined: Fri Mar 28, 2014 5:18 am
fuel tank has two sending units?
Why would my fuel tank have 2 sending units. I'm working on a 79 jeep j10. Pulled the tank out to clean it and there is the pickup tube with what looks like a arm that would have had a float on it "broken off" that is attached to a variable resistor. And directly in front of that is a sending unit, no pickup tube but it has a float. What's up with that?
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tgreese
- Posts: 7206
- Joined: Fri Jun 08, 2012 6:31 am
- Location: Medford MA USA
Re: fuel tank has two sending units?
According to the parts book, they are all the same, '74-79. They are a mostly rectangular tank with a central pickup and sender.
Does not sound like Jeep. Is the tank under the bed behind the driver (factory location), or behind the rear axle?
Does not sound like Jeep. Is the tank under the bed behind the driver (factory location), or behind the rear axle?
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
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comet the dog
Topic author - Posts: 176
- Joined: Fri Mar 28, 2014 5:18 am
Re: fuel tank has two sending units?
It's where it belongs. I'm sure it's factory tank.
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Dusty
- Posts: 486
- Joined: Wed Apr 18, 2012 11:41 pm
Re: fuel tank has two sending units?
The pick up tube has been replaced at some time or another.
Newer pick up tubes have a point on them where a sender should have gone, but is not there.
I think they just make one type of unit, then add the sender / float assembly to it if that particular vehicle had one? I know this as I just recently ordered both sender, and a pick up tube from BJ's.
Newer pick up tubes have a point on them where a sender should have gone, but is not there.
I think they just make one type of unit, then add the sender / float assembly to it if that particular vehicle had one? I know this as I just recently ordered both sender, and a pick up tube from BJ's.
If God is your co-pilot, you need to switch seats!
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comet the dog
Topic author - Posts: 176
- Joined: Fri Mar 28, 2014 5:18 am
Re: fuel tank has two sending units?
Ok. Thanks
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Cheap Hobby
- Posts: 649
- Joined: Tue Apr 22, 2014 12:53 pm
- Location: Central Valley
Re: fuel tank has two sending units?
Back in the dark days, late 80s early 90s it was impossible to get a lot of parts for these rigs. It is quit possible po grabbed what ever fit the hole and made it work.
79 Cherokee WT QT Golden Eagle white with gold windows "Pigger" only blows hubs the night before a road trip or the clodest night of year. Has only been towed cause of stupid.
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HeavyMetalThunder_81
- Posts: 740
- Joined: Sat Mar 17, 2012 5:01 pm
- Location: Haze Gray
Re: fuel tank has two sending units?
^^^THIS^^^Dusty wrote:The pick up tube has been replaced at some time or another.
Newer pick up tubes have a point on them where a sender should have gone, but is not there.
I think they just make one type of unit, then add the sender / float assembly to it if that particular vehicle had one? I know this as I just recently ordered both sender, and a pick up tube from BJ's.
The Wag/Chero tanks are the exact same way. The aftermarket pick up tubes have the spot for a sender but no arm. I'm assuming the same goes for the J-trucks. I just replaced mine and it was the same as you describe.
-Jonny B.
1979 Cherokee Golden Eagle - UNDER CONSTRUCTION
7" lift, 35x12.5x15
AMC 401 - Pro-FLo 4 FI
NV4500/NWFBB/NP205 - Triple Stick'd
F D44 - 4.10, Eaton E-Locker
R M23 - 4.10, Detroit Locker
1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
1979 Cherokee Golden Eagle - UNDER CONSTRUCTION
7" lift, 35x12.5x15
AMC 401 - Pro-FLo 4 FI
NV4500/NWFBB/NP205 - Triple Stick'd
F D44 - 4.10, Eaton E-Locker
R M23 - 4.10, Detroit Locker
1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
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chevelleguy
- Posts: 380
- Joined: Mon Oct 08, 2012 10:11 am
- Location: Hughes Springs, TX
Re: fuel tank has two sending units?
I think you all are missing what he is saying.
Sounds like the Previous Owner cut a hole and installed an aftermarket sending unit because (like Cheap Hobby suggested) he couldn't find the correct sending unit/pickup tube to replace his broken one with.
Sounds like the Previous Owner cut a hole and installed an aftermarket sending unit because (like Cheap Hobby suggested) he couldn't find the correct sending unit/pickup tube to replace his broken one with.
David
'83 Wag Limited, 360/727/pinned 229/D44 front/AMC20,lockrite,rear/6" BJ lift w/ 35/12.50/15 M/T Baja MTZ/ Pro-Jection EFI.
'16 Camaro SS
'98 STX1100 Jet ski
'96 ZXi 1100 Jet ski
'90 KDX 200
'83 Wag Limited, 360/727/pinned 229/D44 front/AMC20,lockrite,rear/6" BJ lift w/ 35/12.50/15 M/T Baja MTZ/ Pro-Jection EFI.
'16 Camaro SS
'98 STX1100 Jet ski
'96 ZXi 1100 Jet ski
'90 KDX 200
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Dusty
- Posts: 486
- Joined: Wed Apr 18, 2012 11:41 pm
Re: fuel tank has two sending units?
Look at the pick up tube unit.
Just like the OP said.
http://www.bjsoffroad.com/Fuel-Pickup-T ... p_833.html
Just like the OP said.
http://www.bjsoffroad.com/Fuel-Pickup-T ... p_833.html
If God is your co-pilot, you need to switch seats!