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Old 04-10-2005, 02:17 PM
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Bad Air Valve

I recently did a complete air ride system in my 66 Impala. The kit was purchased from Air Ride Tech.

The kit has a ECU that controls the air pressure and also controls the air valves. My passenger front air valve keeps shorting out. The valve will deflate but not inflate.

From the ECU are weather pak connectors that connect to the air valves. I checked the power coming from the ECU that goes to the passenger front valve and have power when I hit the button for inflate. I have also checked the weather pak connector at the valve and have power. Both ends have power when I hit the inflate button.

Air Ride Tech has sent me 3 new air valve and each one worked for a day and then goes out. I realize there probablly is not enough information here for you to help diaganose this problem. But I figured someone might have experience something like this with a air ride setup...

I have double checked the wiring directions and have everything wired correctly. The air valves get their power from the ECU unit and no where else. And the air valve ground to the frame.

I sent my system back to Air Ride Tech and they said everything worked fine. They sent it back to me and it did not work. My car has all new wiring. And no other electrical component has any issues. Air Ride Tech has never had this problem. What is strange to me is that the same air valve goes out each time. So that make me think the ECU is bad. Hopefully someone can shed some light on this subject..... thanks......

And please ask questions if you need more info......

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Old 04-10-2005, 02:50 PM
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Air Valve

Doc here,

Just a shot here...


Where is the ground for the air valve located? Wouldn't happen to be on a Movable Suspension part would it?

If so the suspension parts not only are movable, but mounted on rubber bushes...making them a bad candidate for a good ground. The current could be loading up at the valve looking for hard ground , heating and taking out the coil.

You would read power on both sides of the coil if it did not have a hard ground...except the ground side will have no real current (being used up by the coil windings) making you think it had source Voltage on both sides.

Since it worked Fine on the tech bench, this would be the only thing I could think would affect the system in the car...

Hope it helps...

Doc
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Old 04-10-2005, 05:14 PM
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Valve

Hey Doc,

I just narrowed the problem down. The valve will not work when the air tank is at a 150 psi. If I raise and lower the car a few times to lower the tank psi the valve will work again. I sent a email to Air Ride Tech to see if there is something in the system that would shut down a valve if it senses to much psi. The valve works fine when I bench tested it. Both the inflate and deflate worked fine on the valve. Something is causing the valve to stop working after the air tank's psi rises...


I will double check the grounds.

Thanks Doc....

Last edited by black66; 04-10-2005 at 08:26 PM.
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Old 04-10-2005, 06:43 PM
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I would check all of the connections and grounds, what it seems like to me if it wont work at the higher pressure, it is not getting enough amperage to overcome the 150psi of air pressure, and when the pressure is lower, it can open correctly. I would check all of the connections again, even the weather pack connectors might have a bad solder/crimp connection on it.

Subman
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Old 04-10-2005, 08:29 PM
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Valves

Subman I have changed the weather pak connectors with new ones and still have the same problem. Once I check all the connections I will post my findings.... Thanks...
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Old 04-11-2005, 04:52 PM
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Compressor Check Valve

Doc here,

Check to see if your compressor has an electrical / pressure Shut off valve, and if so if it's wired correctly. The Valve is used to shut off the compressor to keep from over pressuring the tank.

Doc
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Old 04-11-2005, 08:09 PM
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Valve

Doc the compressor 150 psi shut off switch is working fine. I am so frustrated at this point I am about to tear the air ride system out. Air Ride Tech can not figure out what is the problem, and I have run out of things to check....
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Old 04-11-2005, 08:52 PM
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Bingo

Doc I found the problem...... I originally had the valves mounted on a piece of aluminum that was bolted to my truck floor. The valves ground to the aluminum plate that was bolted the the trunk floor. I re mounted the valves on a piece of plywood covered with carpet. There are two vavle blocks with 4 valves on each block. Each block has all four valve ground wires going into on connection.



You can see how on the picture the ground wires all come into on wire. Instead grounding the ground wire as close as possible. I was using a longer wire to ground farther away from the valves. I guess to long of a ground wire caused the problem...
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Old 04-12-2005, 12:44 PM
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Kewl!

Doc here,

Glad to hear you got it!

Sounds like the extended ground wire was on a bad (ungrounded) area , or the wire connections were putting in a high resistance...Either way...If it works.....Well you know!

Thanks for posting back with the cure!

Doc
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