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Originally Posted by rnj
when did the roadie wagon come with self leveling systems? If it is not raising the height, what can I look for? I have a 92 rm estate, and I looked at the shocks (rear), and they look like air shocks. They have a sort of rubber boot at the around 3/4 of the way down. The car sits noticably low in the rear, the wheel well sits lower than the top of the rim. If you can help me out I would appreciate it!!!
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Check the compressor for operation first and if it is pumping, you have a leak in the air bladders on the struts and need to replace the air struts. Monroe Sensa Trac will work very well for a replacement.
Basically, this is how the system works;
System activates when ignition is turned on, and remains active until 6 min after switching ignition off.
Compressor head houses the dump valve. There is an 8-15 second delay in the sensor circuit, to prevent compressor/dump valve operation during normal driving.
Sensor also limits compressor run time/dump valve, cycle to 6 min incase of severe system leak - turning ignition on & off resets the run time. This is known to cause the fuse to blow, or the compressor to fail. (Too many cycles in a short period of time)
An air replenishment cycle is initiated when the ignition is turned on. If the vehicle is a the correct height, a timer starts and after 35-40 seconds, the compressor will run for about 4 seconds to ensure that the shocks are filled with adequate residual pressure.(8-14 psi)
If weight is added to the vehicle during the replenishment cycle, then replenishment is over ridden.
To reduce compressor starting current, the dump valve is opened for 1.5 sec. each time the compressor starts.
After turning on the ignition and allowing the replenishment cycle to complete add 300 pounds (1,2or3 friends depending on size) to the rear tailgate and observe the drop in ride height. After 8-15 seconds you should hear the compressor start (listen closely near the compressor and you will even hear the 1.5 second dump valve operation). Then with the 300 pounds still on the tailgate, observe the body trim moving up to the correct ride height. The compressor should then cut off, and your car will stay at the correct height.
Remove the load (car will rise too high) and listen again near the compressor, after 8-15 seconds, you should hear the air escaping through the dump valve.
The link below will give instructions on how to check the bladders for leaks;
ELC Strut Options for Bonnevilles