On the ones I have seen the a/c cars have a fuel return line going back to the tank and the non a/c cars do not. Adding the return line helped with vapor lock. I don't know if you can seal up the return line from an a/c pump and have it still work properly. Steve B. **The parts book lists different fuel pump part numbers for cars with air **conditioning and without. Why would that be, and what would happen if **you **put an a/c fuel pump on a car without a/c ? ** **I recently bought a NOS fuel pump for my 58 Ply, but it turns out to be **for **a/c cars. ** **Thanks, ** **Ron ************************************************************* To unsubscribe or set your subscription options, please go to http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1
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