Please Conifrm My thoughts on fuel gauge reading

[Larry E]

OK I have scowered all the previous posts and cannot find the answer to my question so here is whats happening with my new fuel gauge and my thoughts on why it is maybe happening.

I just installed all new iEquus gauges on my 1974 Seaswirl GM 2.5 powered boat. All of the gauges are working except for the fuel gauge. Turn on the key and the gauge pegs past the full mark. I also have a new sender in tank which has the following ohm specs

Empty = 227-257 ohms
Full = 22-49 ohms
This is a Veethree sending unit (see diagram) No your eyes are not going bad. The picture is blurry.

Now the gauge is a GM gauge that has the following ohm specs

Empty = 0 ohms
Full = 90 ohms

I have the sending unit wired per diagram.
I have the fuel gauge wired per its instructions...

So can the difference in the sending units ohm requirement and the gauges ohm requirement be causing the pegged needel on the gauge as I suspect?

Thanks in advance for your input
Larry E

 

[Bondo]

Re: Please Conifrm My thoughts on fuel gauge reading

Ayuh,... Ya need the gauge that matches yer sender...

 

[Larry E]

Re: Please Conifrm My thoughts on fuel gauge reading

Ayuh,... Ya need the gauge that matches yer sender...

Thats what I thought...In my case I need the sender that matches my gauge...

Thanks for the reply
Larry E

 

[coreybv]

Re: Please Conifrm My thoughts on fuel gauge reading

Yep, wrong sender for that guage.

I'm guessing you tested it with an empty tank? (since the gauge pegged past full). I'd bet if you filled the tank your gauge would read right around the 1/2 mark.

Definitely need to start shopping for a matching sender.

 

[Silvertip]

Re: Please Conifrm My thoughts on fuel gauge reading

Yep, wrong sender for that guage.

I'm guessing you tested it with an empty tank? (since the gauge pegged past full). I'd bet if you filled the tank your gauge would read right around the 1/2 mark.

Definitely need to start shopping for a matching sender.

Jegs has 0-90 ohm senders but it is not apparentl if the mounting is the same as a marine unit.