rear air suspension - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-04-2004, 01:12 AM   #1
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well, as one of my x-mas gifts i'm wanting to get this fixed....

I don't belive the fuse is blown so i'm thinking eather a whole new motor or something is wrong with the wiring.....

What do ya guys think?
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Old 12-04-2004, 01:18 AM   #2
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Put about 300lbs in the trunk and see if it raises itself up like it'* supposed to.

Get power to the pump and see if it comes on to verify it works. There'* three wires, Exhaust solenoid power, Pump power and Ground.
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Old 12-04-2004, 01:21 AM   #3
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well, i know it dosen't work. at WCBF we tried to raise the rear end for the drag racing by having some of us sit on the truck, but it never pumped up....

I'll try to check the wires first thing tommarow morning...
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Old 12-04-2004, 01:25 AM   #4
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You need to do some experimentation to see what exactly isn't working.

Disconnect the level sensor rod and rotate it fully in the loaded direction to see if it senses.
Mine stopped working once and I did this. Rotated it in both direction fully a few times. It has been working ever since.

Check for open circuits.
If it still doesn't work, remove the pump and power it separately to make sure if it works or not.
Try taking it apart if it doesn't. Nothing to lose and you may learn something.
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Old 12-04-2004, 01:27 AM   #5
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Quote:
Originally Posted by 2000SilverBullet
Try taking it apart if it doesn't. Nothing to lose and you may learn something.
The pump is very simple, 12v motor, direct connect crankshaft, 1.5" bore, reed valves. If anything, I would assume the motor would be the first to go.
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Old 12-04-2004, 01:30 AM   #6
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does someone have a part # for the pump if that'* what is out?
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Old 12-04-2004, 01:34 AM   #7
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I've got them for the whole system.

Does the pump motor turn on?
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Old 12-04-2004, 01:35 AM   #8
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Quote:
Originally Posted by Damemorder
Does the pump motor turn on?
no
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Old 12-04-2004, 10:14 AM   #9
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Apply 12V to the pump motor, Now does it come on?
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Old 12-04-2004, 01:04 PM   #10
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what cars have this option ive never heard of it. whats it do and how doe sit work?
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