Question about 2005 Chevrolet Venture

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Rear air shocks

Compressor for rear air shocks runs ALOT, obviously they are leaking and the pump is trying to fill them up. This is just a work van and doesn't haul much weight, so I would like to disconnect the fuse to the compressor and just do without the air shocks. Where do I find such fuse?

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  • Chevrolet Master
  • 76,630 Answers

In the underhood fues box or just disconnect the power to the compressor. You will have to live with a ride control warning light on though.

Posted on Mar 18, 2014

  • yadayada
    yadayada Sep 26, 2014

    Any tire shop can do this work, get a few estimates and don't waste the money on high end shocks, get an OEM equivalent, MONROE AND OTHER MAKE THESE.

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SOURCE: '98 Chevy Venture Air compressor quit working

i found one fuse under the hood its top left corner small one that is a 30a

Posted on Nov 27, 2010

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1 Answer

How do iservice ride control


this is for the Auto Level for the rear axle,in "most cases" the compressor is bad, and one or both rear shocks leak air. What happens is a shock leaks air and the compressor tries to keep it up, but runs so long that it burns up or is worn out from running too much. plan on at least $1000.00. but have it checked out, YMMV

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I have a 1990 Cadillac Deville with the 4.5. I was curious if that car came with air suspension stock. I noticed a little compressor like thing right be hind the battery turn on when I was jacking it up....


The compressor will turn on when the rear air shocks are low. These shocks will begin to leak with age, and if new, can be damaged if you raise the rear end without disconnecting the battery. The shocks will fill with too much air and create a leak. If your motor runs continuously, you may need to replace the shocks. May also have a leak in the air hose going to the compressor. Check the fitting. Short fix would be to disconnect the power going to the compressor, but your ride will suffer.

Jul 18, 2011 | 1990 Cadillac Deville

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Im tryn to locate the air conpressor so I can rise the shocks.


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What does the "leveling" light in the dash mean in my 2000 cadillac catera. why is it on and how do i fix it. put new rear shocks in it and now it stays on all the time.


What the leveling system is is basically a height sensor for the rear height, air shocks, an air compressor and air lines. What happens is the height sensor knows what is considered a normal ride height. When people or items are added at the rear seat or trunk the vehicle sits lower. The air compressor will turn on and attempt to pump up the air shocks to raise the height to normal again so the rear end doesn't bottom out.

What can happen is the compressor fails to turn on due to a blown fuse, faulty compressor or defective height sensor. If the compressor turns on the shocks might not be able to pump up due to a line leak or air shock leak.

If you are able to look at the lines or shocks you might find a problem. Otherwise going to your mechanic and have him/her inspect the system to see what the problem might be and then deside if you want to fix it or have them do the repair. Because the light turns on periodically and goes out I would suspect a leak somewhere.

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Where is the a.i.r. pump located



The air pump for the secondary air system (emission control device) is located under the battery. If you do replace it, replace the check valve too, it is on top of the exhaust manifold and connected to the pump with a hose. The check valve fails and ruins the pump. Source(s): http://repairpal.com/volvo-850-1997/comm…
http://repairpal.com/air-pump-check-valv…
http://repairpal.com/air-pump

OR


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OR



Rear Suspension Leveling Air Compressor
RH front of vehicle, attached beneath the fascia

Rear Suspension Leveling Air Compressor Relay K19
Lower I/P, to the RH side of the steering column, on the relay box


Automatic Level Control System Operation Check
Support the rear wheels or support the rear lower control arms when certain tests require raising the vehicle on a hoist. Use two additional jack stands in order to support the rear lower control arms in the normal curb weight position when a frame type hoist is used. Refer to Trim Height Specifications in Suspension General Diagnosis.

Refer to ALC Suspension System Check for electrical troubleshooting of the Automatic Level Control (ALC) system, or if DTC's are present.

Diagnosing Leveling Complaints Without DTCs Present Procedure
Perform the following preliminary inspections before performing the system performance test:

Inspect the ignition (pin A & pin H) at the ALC sensor connector.
Ensure that the ignition (pin A & pin H) at the ALC sensor connector connection is secure.
Inspect the ground (pin E) at the ALC sensor connector.
Ensure that the ground (pin E) at the ALC sensor connector connection is secure.
Inspect the ALC sensor link.
Ensure that the ALC sensor link is properly secured to the actuator arm.
Inspect the ALC sensor actuator arm for damage.
ALC Diagnosis Table Step
Action
Value(s)
Yes
No

1
Has the ALC compressor assembly and the air tube been replaced?
--
Go to Step 7
Go to Step 2

2
Raise and support the vehicle. Lifting and Jacking the Vehicle in General Information.
Inspect the air tubes running from the ALC compressor to both rear shock absorbers.
Inspect the air tube connection at the ALC air dryer.
Are the air tubes damaged and/or disconnected?
--
Go to Step 13
Go to Step 3

3
Squeeze the left rear shock absorber in the middle of the air sleeve.

Did the air sleeve slightly compress?
--
Go to Step 5
Go to Step 4

4
Operate the ALC system for 60 seconds.
Test the air tube-to-air dryer connection for leaks using a soap bubble solution.
Is a leak evident?
--
Go to Step 20
Go to Step 5

5
Disconnect the air tube from the ALC dryer.
Connect the Pressure Gauge to the ALC dryer.
Close the toggle valve on the Pressure Gauge .
Operate the ALC compressor.
Did the pressure build to the specified value?
80 psi
Go to Step 6
Go to Step 10

6
Shut off the compressor when the pressure reaches 80 psi.
Monitor the gauge for 1 minute.
Did the pressure leak down?
--
Go to Step 10
Go to Step 7

7
Connect the Pressure Gauge to the right rear shock absorber. Ensure that the toggle valve on the Pressure Gauge is away from the shock absorber.
Close the toggle valve.
Pressurize the shock absorber at the toggle valve on the Pressure Gauge to 80 psi.
Monitor the gauge for 1 minute.
Did the system leak down?
--
Go to Step 11
Go to Step 8

8
Use the toggle valve on the Pressure Gauge in order to slowly release the air pressure.
Disconnect the Pressure Gauge from the right rear shock absorber.
Connect the Pressure Gauge to the left rear shock absorber.
Pressurize the Pressure Gauge to 80 psi.
Monitor the gauge for 1 minute.
Did the pressure leak down?
--
Go to Step 12
Go to Step 9

9
Use the toggle valve on the Pressure Gauge in order to slowly release the air pressure.
Disconnect the Pressure Gauge from the left rear shock absorber.
Connect the Pressure Gauge , inline, at the tee near the rear of the vehicle.
Reconnect the air tube to the ALC dryer.
Open the toggle valve on thePressure Gauge .
Using shop air, pressurize the system to 80 psi at the service connection of the Pressure Gauge .
Monitor the pressure gauge for 1 minute.
Did the pressure leak down?
--
Go to Step 14
Go to Step 20

10
Replace the following components:

• Replace the ALC compressor. Refer to Air Compressor Replacement .

• Replace the air tube. Refer to Air Tube Replacement .

Are the replacements complete?
--
Go to Step 20
--

11
Slowly open the toggle valve on the Pressure Gauge in order to relieve the air pressure.
Replace the right rear shock absorber. Refer to Shock Absorber Replacement in Rear Suspension.
Reconnect all of the air tube connections.
Is the shock absorber replaced, and are all of the air tube connections reconnected?
--
Go to Step 20
--

12
Slowly open the toggle valve on the Pressure Gauge in order to relieve the air pressure.
Replace the left rear shock absorber. Refer to Shock Absorber Replacement in Rear Suspension.
Reconnect all of the air tube connections.
Is the shock absorber replaced, and are all of the air tube connections reconnected?
--
Go to Step 20
--

13
Are any of the air tubes damaged?
--
Go to Step 14
Go to Step 18

14
Replace the air tube that runs from the air dryer to the two rear shock absorbers.

Is the replacement complete?
--
Go to Step 15
--

15
Remove the ALC air dryer from the compressor assembly.
Shake the ALC air dryer with the head connection down.
Did water/moisture come out of the ALC air dryer when the dryer was shaken?
--
Go to Step 16
Go to Step 17

16
Replace the ALC air dryer. Refer to Automatic Level Control Air Dryer Replacement .

Is the replacement complete?
--
Go to Step 17
--

17
Replace the air compressor head. Refer to Automatic Level Control Air Compressor Head Replacement .

Is the replacement complete?
--
Go to Step 18
--

18
Install the ALC compressor on the vehicle.
Reconnect all of the air tube connections.
Is the ALC compressor reinstalled, and are all of the air tube connections reconnected?
--
Go to Step 20
--

19
Repair the air tube-to-air dryer connection leak.

Is the repair complete?
--
Go to Step 20
--

20
Reconnect all of the connectors that were disconnected.
Reconnect all of the components that were removed.
Clear all of the codes with the ignition ON and with the engine OFF.
Wait at least 5 minutes.
Is the rear of the vehicle trim level?
--
System OK
--






Aug 04, 2010 | 1998 Cadillac Catera

2 Answers

I have 94'crown vic with rear air ride suspension problems. The back end won't rise. Any help is appreciated.


Start by checking the fuses for the air compressor for the rear suspension. these will be listed in your owners manual. Failing this it could be the compressor motor or wiring to the motor, unless you can hear the compressor working. If the compressor is running but not adjusting the back of the car then you have an air leak in one of the shocks or air lines.
if you find it is a fuse, also listen for the compressor motor running and an air leak, if the system is running constantly to make up for a leak , that may be what blew the fuse.

Hope this helps
Ed

Mar 29, 2010 | 1994 Ford Crown Victoria

1 Answer

My Rear suspension stop working on my 97 Expedition. The rear Bags are about 6 mos old. The compressor is working. It was working fine yesterday but this morning when I started up my truck and drove away...


sounds like possibly the bags are blown or either lines leaking if it's the bags blown out there are a couple choices replace the bags obviously or you can get an aftermarket kit to do away with the air ride suspension and put regular springs and shocks under it which is alot cheaper than new bags. but make sure you don't have a line that has ruptured

Oct 22, 2009 | 1997 Ford Expedition

2 Answers

98 EB expedition rear end wont stay raised when truck is off


you have a leak somewhare in the system, i would check the suspinsion air bags on the rear first cause thay dry rot over time and start leaking

Jan 25, 2009 | 2000 Ford Expedition

2 Answers

97 catera leveling light flashes all the time


The problem is a leaking air shock(s). My 1997 catera had this problem also. I drove the rear wheels up on a set of ramps and went underneath. There is a sensor located close to the rear axle's that moves up when the car is loaded in the rear. (luggage/person in the back seat). When the car senses the extra weight, a small compressor located up under the hood pumps air to the air shocks until the car is back level again. With the key turned on, and the engine off, You can actually move this sensor with your hand and after about 45 seconds, you will hear the small electric compressor come on and see the rear of the car rise. Even if the shock is leaking, the car will still rise but you can hear/feel the air leak on the rubber boot of the shock. The reason the light never stops flashing is because of the air leak the car never really reaches proper leveling. I know what your thinking, "I didn't have extra weight in the car"..doesn't matter car still levels itself from time to time without extra load in the rear. Possible road conditions etc. and also the fact your basically riding around with only one rear shock working like it should. hope this helps......dave

Dec 10, 2008 | 1997 Cadillac Catera

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