1999 Cadillac Deville Shocks air themselves up constantly

BASSMUSICIAN

MEMBER
1999 CADILLAC DEVILLE
V8
FWD
AUTOMATIC
13,900 MILES

I mentioned in my How do I put Spark Plugs and wires in the back of the engine question, alot of the things that have happened to this car recently, well one other thing is this, the Air shocks or whatever, are constantly refilling themselves. I NEVER heard this before all those other problems occured. This was JUST after my mechanic fixed a broken brake line to the rear, where he pulled the gas tank to get to the brake line. I feel he must of not connected the shocks on the rear correctly to the little compressor, is that feasable? Thanks to anyone who will answer.

3 Replies

MADMIKE1735

MECHANIC
951 POSTS

If a line was hooked up incorrectly, you would hear an air leak. It sounds as if the leveling valve arm may have been bent. Also, did your mechanic disengage the air suspension before lifting the vehicle? (The shutoff is in the trunk)

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Friday, October 29th, 2010 AT 11:22 PM

FACTORYJACK

MECHANIC
4,159 POSTS

Either he left the sensor disconnected, and it thinks that it is too low, a line was routed improperly and was worn through or damaged, or left disconnected. What is the profile of the vehicle. Is it riding high in the rear. If it is still riding low, there is probably an air leak. If it is jacked up to maximum, there could be a fault with the sensor or arm. There is no shutoff for the system, it shuts off when the elc fuse blows.

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Saturday, October 30th, 2010 AT 4:40 PM

BASSMUSICIAN

MEMBER
38 POSTS

Well, first off, thanks to both of you for replying. I looked in the trunk and I dont see a shutoff for it. The mechanic is closed cause its Sunday, but I will ask him tomorrow if he shut it off. (He gets real smart with me, but I cant help he's put like 6 altenators on it due to getting defective ones from HIS part supplier)
Anyway, it doesnt seem to be all ljacked up, nor too low to the ground, and it rides great, BUT it makes this LOUD growling sound, like an air compressor makes when refilling itself. I sat at a KFC the other day for 4 or 5 minutes, and that noise kept going on, stopping, then going on then stopping, around 5 or 6 times before getting my order. I NEVER heard this annoying sound before getting all that work done on it. Thanks again, Jack

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Sunday, October 31st, 2010 AT 6:22 PM