Question about 1988 Cadillac Sedan DeVille

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Lift sensor for rear of 1988 Deville

I just had my car inspected. The man at the shop said the headlights were shooting high because the rear end was low. He said that car had a lift system to level the car, but not working right. He guessed a sensor was bad, but I don't know where to begin.

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  • Joe Gill Apr 28, 2013

    Where would one find the "fuse" for the "ride level" sensor or the compressor? Checked BOTH fuse blocks under the dash. Looking like my compressor is out... but want to be sure. I set the car on jack stands and removed rear tires. Jacked up the drum on the P.S. to compress the ride level sensor (air line disconnected from shock) Compressor doesnt turn on... no air from the air line. Fuses?..



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Where would one find the "fuse" for the "ride level" sensor or the compressor? Checked BOTH fuse blocks under the dash. Looking like my compressor is out... but want to be sure. I set the car on jack stands and removed rear tires. Jacked up the drum on the P.S. to compress the ride level sensor (air line disconnected from shock) Compressor doesnt turn on... no air from the air line. Fuses?...

Posted on Apr 28, 2013

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To begin with, check the "ride level" fuse and make sure that the ride level compressor does work, and you should be able to hear that the ride level compressor is working when the ride level system is leveling the vehicle.

The ride level system uses an air compressor and either an air type of shocks or a type of air billow to raise and lower the vehicle, there is an adjustment to set the ride height and it is located under the vehicle and there is a control lever or rod that should be connected between the rear axle and a switch that is mounted on the body of the vehicle, and there will be an adjustment slot in the control lever between the switch and the body, and that is how you would adjust the ride level height, but be sure that the vehicle can not drop any further down if someone is under the vehicle trying to adjust the ride height.

However, you might find that the control lever to the ride level has fallen off from the switch on the body or it has come loose from the rear axle, and it is just hanging there not operating the switch on the body that controls the the ride level compressor, or there might be a blown out air shock or billow, or you might find that an air line from the compressor is leaking and the ride level compressor will just run continuously until it blows out the fuse, and if that is the case you might also find out that the air compressor has burned out from running continuously.

I hope that this information will help you to solve your ride level problem.

Posted on Jun 09, 2010

  • Brian Williams Jun 10, 2015

    This exactly my problem, gave fuses, relays, and even jumped the air compressor straight to battery. Im thinking its heught adjuster, got test light and checked, and its getting power, so I think thats my problem. But would like to onhear any more suggestions to check. Much help needed if you can spare.



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