Question about 1981 Chevrolet Corvette

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Suspension problem on 81 corvette

I have an 81 corvette and it leans lower on the drivers side by a quarter inch. I replaced the rear mono spring, shocks and body mounts and nothing fixed the problem. I tried to adjust the mono spring to even the ride height out. As I adjust the passenger spring bolt to raise the car, only the passenger side lifts as expected, but as I adjust the drivers spring bolt to raise the car, both sides lift and thats not expected. I've had this problem for years and no mechanic that I brought it to can figure out the problem, can you PLEASE help me figure out this problem. Thank you for your help.

Frustrated owner,

Sandro

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  • nico
    nico Jul 30, 2018

    i have this issue on an 81, 9 leaf metal spring. First..be sure your rubber or poly bushes are sound and the same..cheap enuf to obtain new..recommend the poly. Use the optional 8 inch extra length outer spring bolt on the too hi side..adjust the nut downward lowers that side. use stock 6.5 inch outer spring bolt on left side, (th too low side)..titen nut up raises that side. May need a second or even third lower thick washer if you run out of threads. Measure at hi point of wheel arch from floor. (tip..its easier to adjust the nuts if you take just a little weiht off the sprin ends with a jack at outer ends..use a pad..and raise only a little...measure the body wheel arch..adjust with jack..move nut up/down once you have it close..final adjust when no jack..drive it a bit..a few turns..re-check..final adjust.

  • nico
    nico Jul 30, 2018

    by the way..also..first check that the spring leaves are "centered"..measure top most leaf each side..the center small bolt has a tiny bit of adjustment..maybe 1/8 in leaf side to side.

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  • Master
  • 867 Answers

Just an idea, have you tried using spring blocks(rubber wedges) ?

Posted on Nov 05, 2009

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Posted on Jan 02, 2017

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1 Answer

I have a 1999 Chevy S-10 and it leans to the right at about an 1" and has no torsion baron the truck to adjust it any thoughts on this besides new Leaf Springs or helper springs.. I need to fix the leaning...


Does the vehicle behave differently when driving? Thumps when hitting pot holes or bounces more than usual.
Park the vehicle on level ground and with a good bright torch take a very good look at the suspension on both sides. This lets you compare one side with the other.
You'll need to examine the suspension for obvious damage. Try the method below. If the spring and shock look OK it could be the suspension has a 'soft' spring or a faulty damper on one side.
You are looking for broken or missing pieces. The spring should also look symmetrical. Check the mounting points front and rear especially the rear swinging mount. Chock the wheels, (front AND rear of one wheel), and get someone to bounce up and down in the back of the vehicle. Without getting under the vehicle watch the springs and mounts move. It should be the same both sides.

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Shock Absorber Replacement
Removal Procedure
Raise and support the vehicle. Refer to Vehicle Lifting
Remove the lower shock bolt.
For right side only, remove splash shield.
Remove the upper shock bolt.
Remove the shock from the vehicle.
Installation Procedure
Install the shock to the vehicle.
Notice: Refer to Fastener Notice in Service Precautions.
Install the upper shock bolt.
Tighten the bolt to 110 Nm (81 ft. Lbs.).
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Tighten the bolt to 110 Nm (81 ft. Lbs.).
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For complete step by step guide with diagrams click the link below:
http://carrepairworld.blogspot.com/2016/06/how-to-remove-rear-suspension-on-2006.html
This will help.
Thanks

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Land rover Discovery 2004, rear right hand side down 2 inches


If you have the coil spring suspension, then your spring for that corner has really sagged[doubtful] I suspect you actually have the rear air suspension ,and the air spring for the Right/Rear has lost air, allowing the rear end to lower down greatly. Usually, you need a new air spring when one develops a leak. You may or may not be able to see the leak with a spray solution of soapy water after the spring is removed for inspection. Sometimes you have to apply about 20psi of air pressure into the spring to inflate it a bit, then put the spring under water in a big enough tank/tub of water to catch the leak that way.

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1 Answer

I need to know how to get to the rear suspension (tower)


i don't think you have to do any repairs from the top end. I will list most fromFord shop manual. Please rate as Fixya if this answers your questions. Please report back. Good luck.

Section 04-02: Suspension and Wheel Hubs, Rear 1994 Town Car, Crown Victoria/Grand Marquis. Workshop Manual
REMOVAL AND INSTALLATION Spring Rear
Removal
  1. Position a hoist under the rear axle housing, and raise the vehicle. Refer to Section 00-02 . Place jackstands under frame side rails.
  1. Remove rear stabilizer bar as outlined.
  1. Disconnect the lower studs of the two shock absorbers from the mounting brackets on the rear axle assembly .
  1. Unsnap the RH parking brake rear cable and conduit (2A635) from RH upper arm retainer before lowering the rear axle assembly .
  1. Lower the hoist and axle housing until the rear springs are released.
  1. Remove rear spring and rear spring center mounting insulators (5741) from vehicle.
    -----------------------------------------------------------------
Shock Absorber Removal
Raise the vehicle on a hoist. 1. To assist in removing the upper attachment on shock absorbers using a plastic dust tube, place an open end wrench on the hex stamped into the dust tube's metal cap. For shock absorbers with a steel dust tube, simply grasp the tube to prevent stud rotation when loosening the retaining nut.
  1. Remove the shock absorber retaining nut, washer, and insulator assembly from the stud on the upper side of the frame. Discard nut. Compress the shock absorber to clear the hole in the frame, and remove the inner insulator and washer from the upper retaining stud.
  2. Remove the self-locking retaining nut, and disconnect the shock absorber lower stud from the mounting bracket on the rear axle tube.
  3. Perform Shock Absorber Checks. Refer to Section 04-00 to determine shock absorbers performance.
Installation
  1. Properly prime the new shock absorber . Refer to Section 04-00 , Shock Absorber Checks.
  1. Place the inner washer and rear spring insulator (5536) on the upper retaining stud, and position the shock absorber so that the upper retaining stud enters the hole in the frame. While holding the shock absorber in this position, install a new rear spring insulator , washer and nut assembly on the upper side of the upper frame. Be sure to seat the rear spring insulator in the frame attaching hole. Tighten nut to 34-46 Nm (25-34 lb-ft).
  1. Extend the shock absorber , and place the lower stud in the mounting bracket hole on the rear axle assembly housing. Install a new self-locking retaining nut. Tighten nut to 76.5-103.5 Nm (56-76 lb-ft).
  1. Lower vehicle.
-----------------------------------------------------------------------------
Arm Lower
Removal
Refer to the illustration in Description and Operation. NOTE: To improve rear axle assembly noise and vibration concerns, the rear suspension should be fastened to the frame and rear axle assembly at the curb height position.
NOTE: If one rear suspension lower arm requires replacement, also replace the opposite rear suspension lower arm .
sra~us~en~file=ani_caut.gif~gen~ref.gif WARNING: TURN REAR SUSPENSION LEVELER COMPRESSOR SWITCH OFF (IF SO EQUIPPED).
NOTE: If both rear suspension arm and bushings and both rear suspension lower arms are to be removed at the same time, remove both rear springs as outlined under Rear Spring Removal. For air spring removal, refer to Section 04-05 .
  1. Mark rear suspension shock absorber relative to protective sleeve with the vehicle in a static, level ground condition.
  1. Remove rear stabilizer bar as outlined.
  1. Raise the vehicle on a hoist, and place jackstands under the rear axle assembly . Refer to Section 00-02 .
  1. Lower the hoist until the shock absorbers are fully extended to relieve rear spring pressure.
  1. Support rear axle assembly under differential pinion nose as well as under rear axle assembly .
  1. Remove and discard the lower arm pivot bolt and nut from the axle bracket. Then, disengage the rear suspension lower arm from the bracket.
  1. Remove and discard the pivot bolt and nut from the frame bracket, and remove the rear suspension lower arm .
-----------------------------------------------------------------
Upper
Removal
SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Suspension Bushing Service Set T79P-5638-A1, A2 and A5 Rear Axle Control Arm Bushing Tools T86P-5638-AH
sra~us~en~file=ani_caut.gif~gen~ref.gif WARNING: TURN OFF REAR SUSPENSION LEVELER COMPRESSOR SWITCH (IF SO EQUIPPED).
  1. Raise the vehicle, and support the frame side rails with jackstands. Refer to Section 00-02 .
  2. Support the rear axle assembly .
  3. Lower the rear axle assembly , and support the rear axle assembly under differential pinion nose as well as under rear axle assembly .
  4. Unsnap parking brake rear cable and conduit from upper arm retainer.
  5. Remove and discard the nut and bolt retaining the rear suspension arm and bushing to the rear axle assembly housing. Disconnect the rear suspension arm and bushing from the housing.
  6. Remove and discard the nut and bolt that secures the rear suspension arm and bushing to the frame bracket, and remove the rear suspension arm and bushing . If upper arm rear bushing is to be replaced, use Suspension Bushing Service Set T79P-5638-A and Rear Axle Control Arm Bushing Tools T86P-5638-AH and the following procedure:
  7. Place the upper arm rear bushing remover tool in position, and pull bushing out. Using Suspension Bushing Service Set T79P-5638-A install bushing assembly into bushing ear of rear axle assembly.
------------------------------------------------
Stabilizer Bar
sra~us~en~file=ani_caut.gif~gen~ref.gif WARNING: TURN OFF REAR SUSPENSION LEVELER COMPRESSOR SWITCH (IF SO EQUIPPED).
Removal
  1. Raise vehicle on hoist, and place jackstands under the frame side rails. Refer to Section 00-02 .
  1. Lower the hoist and rear axle assembly housing until the shock absorbers are fully extended.
  1. Disconnect rear stabilizer bars from rear stabilizer bar link and bushing (5C488) . Remove bolts and stabilizer bar bracket (5486) retaining rear stabilizer bar to rear axle assembly .

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1 Answer

EXPEDITION REAR AIR RIDE PROBLEM


do you have just rear air suspension? here's rear only. 4 wheel different. Deler an run a diagnostic test with WDS machine and get fault codes.
-------------------------------------------------------------------------------------
The air suspension system is designed to improve ride, handling and general vehicle performance for static, on-road and off-road driving conditions:
  • Ride is improved by using an air type spring (the soft ride is inherent).
  • Handling is improved by maintaining constant vehicle attitude.
The system consists of unique rear air springs, the air compressor, air lines, air spring solenoids, height sensor, air suspension control module, attachments and associated signals derived from both driver and road inputs. With these components and signals, the air suspension control module commands changes in vehicle height that are necessary for the load leveling features.
The load leveling feature rear air suspension (RAS) systems shall automatically make adjustments in vehicle height so that the vehicle is always at trim height and constant front-to-rear vehicle attitudes are maintained over the expected load range of the vehicle. Adjustments in height that are necessary to correct height differences between the vehicle's left and right sides for the RAS system shall be restricted to what can be reliably achieved with one air suspension height sensor.
The system uses one air suspension height sensor, a steering sensor, generic electronic module (GEM) and other vehicle sensors to measure driver and road inputs. The system changes vehicle height using an air compressor, two air lines and the use of air springs with air spring solenoids.
The air suspension system holds vehicle height when the rear hatch or any door is opened. The system stores rear vehicle height the moment any open door is detected. The system then maintains this height regardless of the addition or removal of a load. The system will return to its commanded height when all doors are closed or the vehicle speed exceeds 16 km/h (10 mph).
----------------------------------------------------------------------------------------
Air Suspension Height Sensor
One air suspension height sensor is mounted on the vehicle. The air suspension height sensor sends a voltage signal to the air suspension control module. The output ranges from approximately 4.75 volts at minimum height (when the vehicle is low or in full jounce), to 0.25 volts at maximum height (when the vehicle is high or in full rebound). The air suspension height sensor has a useable range of 80 mm (3.2 in) compared to total suspension travel of 200-250 mm (8 to 10 in) at the wheel. Therefore, the air suspension height sensor is mounted to the suspension at a point where full rear suspension travel at the wheel is relative to 80 mm (3.2 in) of travel at the air suspension height sensor. The air suspension height sensor is attached between the No. 5 frame crossmember (upper socket) and the panhard rod (lower socket).
When the air suspension height sensor indicates that the rear of the vehicle is lower than trim under normal driving conditions, the air compressor will turn on and pump compressed air to the air springs. When the sensor indicates that the rear of the vehicle is raised above trim under normal driving conditions, this will cause the air to be vented from the air springs to lower the vehicle back to its trim height level
------------------------------------------------------------------------------
  • Uneven vehicle height
  • Circuitry.
  • Rear pneumatic fault.
  • Air compressor assembly.
  • Air suspension control module.
  • Go To Pinpoint Test I .

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1 Answer

Lean on driver side 1996 honda civic


The front springs are different from the rear,it sound like you may have the front springs on the driver side and the rear springs on the passenger side (or visa versa)You will be able to see the longer 2 of the set,They go in the rear and are not as thick or stiff as the front.


Please rate this a fixya

Jan 19, 2009 | 1997 Honda Civic

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