Air Suspension Question

[yelgnissm]

Hi I thought I'd ask help with diagnosis.

My air suspension on my 1999 Expedition XLT sags once in a while. We live in a very hot climate, and sometimes, maybe once a month we go out and the car is sagging down fully on both rear sides.

Both sides evenly down.

Then, when we start the car the pump pumps it back up and we're fine.

I'm wondering if that was a part, what part would you replace first?
I thought if it was hoses or the struts it would happen each day. I'm wondering if there is a check valve that is intermittently failing.

Any help is wonderful Best cars in the world.

 

[Lostneye]

If they are the original bags I would probably just replace them. Most likely it is the bags or o rings. You can take a spray bottle with soapy water and spray them down and look for leaks to try and find the source but at that age the bags are close to end of life. Change the o rings as well.

 

[GAINMOB]

a lot of ppl do coil conversions to eliminate the problems

 

[yelgnissm]

Thanks!!

Thanks Lostneye and guys
I'll replace those, they aren't expensive.

I love to keep this car renovated. Love this car.

Thanks for helping!

Mark