I was planning on replacing both the rear Air Springs thinking that these are original, probably leaking and time to replace.

But the problem I have. Are loosing Air randomly. usually deflates after going over bumps, or while driving on the HWY few bumps and then rides like go cart! Once I start the truck the springs will inflate, If I park the Air will hold for days until I ride and some bumps. I visually inspected and see no leak. The truck deflates really fast. Wonder if the label controlling having issue not the Springs.

Any suggestions would be appreciated.

 

Is it both sides, equal amounts? If so, I'm stumped.

If not:

When you do the visual inspection, spray soapy water on the air bags, then have someone bounce the car up and down in the back and look for bubbles.

It seams like you have a small leak that is aggravated by the bumps, I am guessing.

If you remove them and use an air compressor it would be easier to find the leak

 

you might want to check the chassis height sensor arm, could be when your hitting a bump its telling the solenoid to dump.

 

^ or probably more likely what Drowsap said!

 

Rear driver side is slightly more tilted than the passenger side. but that does not explain why both the rear drops at the same time. one possibility is one looses the air and the chassis height sensor arm balances the height. So my task this week is to go under take out One arm at a time, clean, make sue all the linkages are moving freely and connections are good. If that does not help, I will replace the Springs and go from there. Unless someone here has other idea to test.

I really appreciate your help.

Thanks

 

If it's a slow bag/spring leak, but some green slime in it. I read an article about that and I was shocked how well it worked. It lasted for years.

 

If you put green slime in the bag, it will only seal a hole in the bottom of the bag. When you put green slime in a tire the centrifugal force spreads it around on the inner surface of the tire. In the bag there is no spreading around of the slime it sits in the bottom.

 

I get what your saying, but it worked. Again, if it's a leak in the bag, try it and see. They usually leak at the "fold" at the bottom so the stuff will get to that area. There was some discussion back and forth about this before when I did at the suggestion of someone else...some said it worked, some said it didn't and that there's no way it would. In my situation it worked great.

The stuff doesn't fix every flat tire either, but it might be worth a try. If it doesn't work, whats the harm if the spring is already bad?

 

In fact most tire slime is a 'get you home' fix and destroys the tire internally. On many occasions it doesn't even work. If one airbag is leaking the other is close behind and LR suggest replacement every 5 years in any event. Just replace the two rear SLS airsprings as 500 miles drive home on the rear bump stops ain't good for the hemorrhoids or the truck and you may need even more expensive fixes.

Oh, if the airbag continues to leak it will overrun the compressor and that will wear or burn out and then that will cost a lot more $$$$$$$$$$$$$$$.

2x airbags @ $$$00's plus 3 hours work ............... simples

 

Thank you all. Air Bags are in the mail. I am replacing them regardless. Hopefully that will solve the problem once for all.