Air Suspension Problems

Can anybody give me some advice on the air bag system on the 2000 Ford Expedition. Here's the problem, rear air bags completely deflated, compresser not kicking on, no warning light on dash. Ford had fixed this problem before about 3 years ago, but did not tell me what they exactly did to fix the problem. Now the warranty has expired and now it's my problem, any advice would be greatly appreciated.

2000 expedition
5.4 liter
2wdrv
rear air bags
Thank you, Jeff.

Can anybody give me some advice on the air bag system on the 2000 Ford Expedition. Here's the problem, rear air bags completely deflated, compresser not kicking on, no warning light on dash. Ford had fixed this problem before about 3 years ago, but did not tell me what they exactly did to fix the problem. Now the warranty has expired and now it's my problem, any advice would be greatly appreciated.

2000 expedition
5.4 liter
2wdrv
rear air bags
Thank you, Jeff.
could be a number of things, if the bags were leaking then chances are the compressor was working extra hard to keep them up and it fryed, another possiblity could be the power source for the compressor, maybe the relay that turns it on is screwed up.

strutmasters.com they are replacement springs and they ride better than the air ride system. order them for 280 that includes shipping and midas muffler will put them on for 130 bucks installed. believe me youll be happy i was.

If the pump is not working it is one of three things, the pump itself, the pump relay directly underneath the pump accessed from under the vehicle, it is black and grey and has fins on it bolted to the frame directly in front of the passenger front tire. or the fuses either under the hood or in the vehicle. Check all your fuses first. The reason the bags are sagging is prob cause they are old but if the pump is inop the bags are fine for now at least. My friends just did this. It was the pump. The pump online is about 150 and can be installed by you. It is very easy.