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Fuel sending unit compatibility


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I have a 94 Legacy wagon AWD who's sending unit does not work - the pump seems fine.

 

I have a 90 FWD wagon that I pulled the pump/sending unit combo out of - 2 hoses.

 

Is there anyway to just swap sending units that may actually work?

 

The 90 only has a unit on the right side. The 94 has 2 units (one on the left - 1 hose, and one on the right - 3 hoses).

 

I read here that on the AWD's the right pumps fuel over to the left side of the tank. Is the sending unit the same?

 

I confess that I haven't removed the right side unit in the 94 AWD yet - I hate to make a mess that I can't tidy up and fix correctly.

 

Thanks,

 

Dave

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I know the assemblies are different. At first glace the sending unit part looks the same. Tomorrow I hope to get the 2 of them together and perhaps try a swap of the sending units since they are both out to see what happens.

 

If I get them to work ( or not work) I'll post the results here.

 

Dave

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The sending unit itself is different as well. The FWD unit has a resistance of around 0-95 ohms, while the AWD units have a resistance of around 0-45 ohms each, which gives a combined resistance of around 0-95 ohms.

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