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Old 03-26-2011, 08:27 AM   #1
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Air Suspension Problem

We have a 40' Coachmen Pathfinder--2008--and recently after going over a bumpy interstate or highway, will generate an Air Pressure Alarm and both gauges will fluctuates wildly for a short time and then back to normal. Happens at speed.
Anyone else experience this problem.
Thanks...
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Old 03-27-2011, 03:27 AM   #2
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One possible problem could be that a ride height control valve connection rod has broken loose or the valve is sticking open causing the loss of air sufficient to est off the low pressure warning. Get the coach into any good truck or RV shop for diagnosis and get this issue repaired. Hopefully it is a simple rod kit install. Also find out if the unit has an air filter/drier and have it serviced if you have not done so within the last two years. Good luck and keep us posted.
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Old 03-27-2011, 07:07 AM   #3
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Quote:
Originally Posted by RV Wizard
One possible problem could be that a ride height control valve connection rod has broken loose or the valve is sticking open causing the loss of air sufficient to est off the low pressure warning. Get the coach into any good truck or RV shop for diagnosis and get this issue repaired. Hopefully it is a simple rod kit install. Also find out if the unit has an air filter/drier and have it serviced if you have not done so within the last two years. Good luck and keep us posted.
Thanks for advice. Will take into local Freightliner shop. Would help if they hadn't made interstates in 10x20 cement squares, but that's what we all deal with.
Don
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Old 03-28-2011, 07:33 AM   #4
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Called Freightliner Help Line and they were very helpful. He suggested that when manufactured, they tie gauge wire bundles
tightly and eventually wires will loosen on gauges. In this case, the two pressure gauges which then are connected to alarm light and audio.
Makes sense that this only happens after bumpy section of road and I don't seem to be losing any pressure parked. He also suggested that gauges would most likely decrease gradually--not a rapid fluctuating gauge reading.
I will pull panel and check. We'll see...
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