1986 345 fuel pump question

[bigtrains]

Howdy, I am a new member and the proud owner of a 1986 Airstream 345.
We have done a lot of work on it and it is ready for our first trip this summer. Although with this virus problem that might not happen.
The rear fuel pump mounted on the chassis near the fuel tank is the one I am questioning. It is working but never shuts off unless I turn off the ignition. It just seems to run on and on and I wonder if this is normal. It is also very noisy. It is made by Holley Model # 12-802-1. I have ordered a new one which just arrived. Should i replace it or is it functioning normally.I bought the new one just in case the original is getting ready to fail.
Any information or advice would be greatly appreciated. The unit has just under 50,000 miles on it.
Regards
David

[Waipio Rim]

The pump on our 345 does the same thing, I have more or less learned to live with it. Our 310 has a toggle switch on the dash to control the pump. I have found that I can leave the pump turned off most of the time.

[BayouBiker]

It shouldn't be too noisy but it is more or less designed for race cars so sound was not much of a concern. You might get some rubber material to put between the pump and the mount. Also as the previous post indicates, it is designed to run full time.

[bobmiller1]

When Airstream built these Classic motor homes they elected not to install the optional isolation kit that is available for the frame mounted fuel pumps....another cost savings to them... the kit includes 2 or 3 rubber bushings with threaded steel posts extending from either side of the bushing. One post goes through the fuel pump mounting plate and the other goes through the frame. There are pictures on my thread "370LE Start to Finish". Regards, Bob