HELP !

I just purchased a 05 tacoma v6 with air bag suspension. It has an valve stem behind rear lic. plate. How much air pressure should I keep [max]-[min]?

 

I would ask the previous owner or go to the air bag website. Does it ride OK now?
I am sure the manufacturer can give you some general PSI.
Had height adjustable shocks on a 69 Camero(about 100 years ago),
Just depended on how stiff or spongy you wanted the ride.

 

15-50 psi. (it is rated to 100 but NEVER inflate it that high) I found that 20 was good for everyday driving and the most I ever had them at was 45 psi with a super heavy load for a Baja camping trip. Mine was an '05... is the truck silver?

Oh, I see you say just one valve... Mine had seperate air valves on each side of the license plate.

 

Googled
"Auto air bag suspension recommended PSI"
Should get you the info your looking for.

 

I already gave him a range... as it sounds like he had the same set up as I did (RideRite).

 

I've been ride'n with 20 psi & it rides pretty good thanx again

 

Excellent... and when you load up the truck... just add air to level it... 35-45 psi may be fine!