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Frodge Samba Member
Joined: October 04, 2006 Posts: 1991 Location: Dump
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Posted: Sun Jun 13, 2021 10:12 am Post subject: 1970 fuel sender |
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I asked this question last year and forgot about it. My original fuel sender gets flakey when the tank goes below a 1/2 or 3/8. It’ll just hover above
Empty. Fill it and it’s fine til that point. I know the new sending units have been deemed “crappy”. What alternative do I have in either a repair or nos? |
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Blue69Baja Samba Member
Joined: September 04, 2008 Posts: 1065 Location: Fair Oaks
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Posted: Sun Jun 13, 2021 10:20 am Post subject: Re: 1970 fuel sender |
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If you have a dvm and can read ohms scale you can verify that the problem is with the sender and not the gauge hanging up in the 1/2 to xx.
Set the ohms scale to the lowest setting, 200 ohms scale.
Remove the center wire from the sender and measure the resistance, key off.
When the gauge stops moving do the ohms measurements.
From the below chart the resistance should be <>33 ohms for 1/4 and around R 45 ohms...
Although the pix below is for a Type 1 the resistances are the same for all VW electronic gauges.
Jim _________________ 69 Baja with a 1914...
72 Super 100% orig...W/ factory air... 56,000mi
Even the spare is original..
Last edited by Blue69Baja on Sun Jun 13, 2021 10:25 am; edited 2 times in total |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51149 Location: Surrey B.C. Canada, but thinking of Ukraine
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Frodge Samba Member
Joined: October 04, 2006 Posts: 1991 Location: Dump
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Posted: Sun Jun 13, 2021 10:29 am Post subject: Re: 1970 fuel sender |
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It doesn’t look like that sender in the link.... |
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Blue69Baja Samba Member
Joined: September 04, 2008 Posts: 1065 Location: Fair Oaks
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Posted: Sun Jun 13, 2021 10:32 am Post subject: Re: 1970 fuel sender |
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Yes but the resistances are the same. Has to be for the gauge to work as it is a fixed resistance and the voltage from the vibrator or regulator is fixed at <>5.1vdc.
Jim _________________ 69 Baja with a 1914...
72 Super 100% orig...W/ factory air... 56,000mi
Even the spare is original.. |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51149 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Sun Jun 13, 2021 10:36 am Post subject: Re: 1970 fuel sender |
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Blue69Baja wrote: |
Yes but the resistances are the same. Has to be for the gauge to work as it is a fixed resistance and the voltage from the vibrator or regulator is fixed at <>5.1vdc.
Jim |
Agreed, same ohms regardless of style. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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Michael Ambrozik Samba Member
Joined: October 17, 2020 Posts: 631 Location: San Jose, CA
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Posted: Sun Jun 13, 2021 10:39 am Post subject: Re: 1970 fuel sender |
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That fuel sender is for a T2. He is I am hoping is working on a T1 standard bug |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51149 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Sun Jun 13, 2021 10:47 am Post subject: Re: 1970 fuel sender |
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Tube senders are all the same inside, the bus one is a little longer, but the repair method is identical. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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Frodge Samba Member
Joined: October 04, 2006 Posts: 1991 Location: Dump
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Posted: Sun Jun 13, 2021 10:50 am Post subject: Re: 1970 fuel sender |
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Mine looks like a linkage with a white float at the end of the wire. |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51149 Location: Surrey B.C. Canada, but thinking of Ukraine
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