i know how these trucks have these problems all the time. My suspension is sagging. I was going to take out the compressor and put the new one in but i had to wait cuz my dad said that the one in might just need to get something fixed(they somehow fixed it last time). The compressor wont turn on except for some weird noise it makes, it goes like POOFPOOFPOOFPOOFevery 2 seconds but nothing happends. I looked at the relay and it looked good, any suggestions??
Best thing to do is to go to junk yard and get coil springs off an expedition, get rid of air suspension
people have to keep in mind when the air suspension sag or not stay level its not the pump. the air suspension has lost air the compressor never causes it to lose air. so if its not level either valve or a bag or a line has a leak. You have to fix the leak and then because the pump has been trying to keep air in a faulty system with a leak it has burn out. So first you have to fix the problem then replace the pump if necessary.
