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1993 Cadillac Fleetwood Brougham
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9 Posts
Discussion Starter #1
While the car looks really nice sitting that low, it makes highway bumps a little worrisome as the car bounces all over the place so I figured its about time I looked into fixing it or at least narrowing it down.

I currently have the fuse pulled but with the fuse in, the system just makes a loud noise, but before I get into buying a new motor I wanted to know for sure so, without getting too involved (removing big parts and stuff) where do I start?
 

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1977 Coupe (blue), 1977 Coupe (yellow), 1977 Coupe (green)
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1,493 Posts
I currently have the fuse pulled but with the fuse in, the system just makes a loud noise, but before I get into buying a new motor I wanted to know for sure so, without getting too involved (removing big parts and stuff) where do I start?
A loud noise? Is it constant? Constant means the pump runs. Loud: means it could be deadheading. Meaning it is making pressure, but the air isn't going anywhere. Follow the air lines and disconnect at a connect point ( like a Tee or a shock). See if there is air at this point. Loud: At the pump - Is air coming from some point around the pump? You may have a blown seal. You may have a connector which has cracked. The system is pretty straight forward. You may have to get under the car to investigate, but if there is a broken line or compressed line, it has to be repaired. You have to raise the car and crawl under to check the shock lines. If you have an air compressor, you can disconnect at the "T" and put air to the "T". If the shocks lift, your shocks are Ok. If they don't lift You may find that one or both have failed. Disconnect at one side at a time and try applying air. If one lifts and not the other, you've found your bad shock. Replace them both. Far better than to have the other fail shortly after replacing the one.
If you run your car for a long time without air in the shocks, there is a good chance they have both become damaged.
 

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1993 Cadillac Fleetwood Brougham
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9 Posts
Discussion Starter #6
Lots of great info there, thanks. And yes the noise is constant.

One question though, where exactly is the compressor? lol
 

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1995 Fleetwood
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84 Posts
Under the air filter box.

As an aside, I ended up returning the new air pump I ordered last week. I opted to instead keep the schrader valve I installed by the license plate instead. It was intended to be a stop gap until I installed the new pump, but now, no more noisy pump, and a consistent ride height. The parts were $13.
 

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1993 Cadillac Fleetwood Brougham
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9 Posts
Discussion Starter #8
I didn't see it when I looked and I remember the last time I had the fuse in it sounded like the noise was coming from the back I think so maybe mine is in a weird area.

Quick random question, what type of wheels do I have? So I can buy the proper cleaner/wax/polish whatever. They are stock. GEDC2506.JPG
 
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