Bouncing Birdie

[Curt Sprenger]

Kurt,
My guess is it's the 60 PSI switches in the air system. Our PT38 has 3 of them. One above the tag, one forward of the drive axle, one above the steer axle. R&R-ing the three switches resolved the same problem you are experiencing.  

Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA

On Wed, Sep 23, 2009 at 10:41 PM, bumpersbird <"kguns@hughes.net"> wrote:

 

Several weeks ago I made a run to IL from Tn and back. I encountered a problem I've not heard about or experienced.



On the highway I crossed an overpass with a rather abrupt transition. The coach hit hard and my drivers chair bottomed out. Not to unusual. But this time the suspension warning light & alarm came on. I pulled over as soon as I could to check out the problem. Everything appeared normal and within a minuet or so the alarm went out on it's own. I guessed that perhaps the bump had compressed the suspension enough to activate the alarm, maybe it was a real big bump.



It happened several more times that day, with it occurring in know stretches of interstate, that have never posed any such problems in the past. With it getting progressively worse. Small bumps would get the coach porpoising.



Stopped several times, I dumped and aired up the suspension several times to see if it was working and she aired up fine until the next bump in the road . Any ideas???



I'm thinking it's the air valve for the front suspension. Maybe the actuator arm is bent, broke or the valve itself is malfunctioning. I'm hoping it's not much more.



Any help would be great.

__________________

Kurt Horvath

95 PT 42

10AC