Air gauge out of synch

[Vake]

Today I started up our 2006 DS after it had been sitting without power for several weeks. Both the engine shut off and "salesman switch" had been engaged since I did not have the ability to have the coach plugged in.

When I started the coach, the rear air gauge needle was 90 degrees out of line. The needle started at about the 12 o'clock position and immediately swung to about 5 o'clock, and totally off of the gauge calibration. It is like the needle has been moved 90 degrees so isn't in line with the calibration numbers on the face of the gauge. The amount the needle moved looked like it was getting the right reading, but just out of synch with the face of the gauge. The front air gauge, and all other gauges, were functioning normally.

I didn't have time to pull the gauge pod to see if there is an adjustment, but thought someone here would probably know. Thanks for any ideas!

[rvbiker45]

If your issue is only on one gauge, swap the leads to the air sending units located in front of the driver in the hood area. Two gold colored ball looking things with air lines and a couple of wires on one end of each ball. If the problem follows the swap, then the air sending unit is bad.
A new one can be purchased from Summit Racing online, about $55-60. Easy change out. The air sending units have a Packard connector, a race-track looking connection, as opposed to the standard air sending unit with a screw post. Look for the 0-150# rating.

[Skip426]

I believe your DS could be on a Freightliner chassis , or a Spartan like rvbiker45's, important info because the chassis builder supplies the gauge package.

Could you add your chassis manufacturer to your signature line.

[Vake]

Originally Posted by Skip426

I believe your DS could be on a Freightliner chassis , or a Spartan like rvbiker45's, important info because the chassis builder supplies the gauge package.

Could you add your chassis manufacturer to your signature line.

Will do, good idea. I do have the same setup as rvbiker45. thanks!