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Topic: VDO mechanical air gauge replacement (Read 464 times) previous topic - next topic

VDO mechanical air gauge replacement

Hi everyone

Has anyone on the forum replaced a faulty VDO dash air gauge?  Our top gauge hasn't worked properly sense we've owned the coach.  At first it was approximately 40# high and after tapping it lightly it is now 60# off.  We've replaced the air governor on the compressor in case that was the issue but to no avail.

I've found a site that looks like the gauge I have but was hoping for some feedback before ordering it.. 
VDO Vision Series Analog Gauges 150112 - Free Shipping on Orders Over  at

Re: VDO mechanical air gauge replacement

Reply #1 –
Before I replaced the gauge, I would bring the air pressure up to the governor setting / popoff of dryer, then compare the resistance of the two senders that provide the dash gauge Reading's.  If both with in 5% of each other, then look at the dash gauge. Problem could be the sender on tank.
Some have replaced the original gauges with mechanical gauges, an easy update.
Dave M