Volvo 740 replace rear shock absorbers - 1989 Volvo 740

Check universal joint first.
Check suspension bushes next.
Then check Shock absorbers.

check the vans rear shock absorbers if they are faulty the car can exhibit this type of behaviour and braking will be less efficient. Also tyre wear will be affected to.
I am not a shock absorber expert but had recently my four shock absorbers replaced as the fluid had ruptured in the front shockers and the rear mounts for the rear shockers were corroded and unsafe. (shock absorber expert at repair place mentioned the symptoms you are describing as a rear shock problem or the rear leaf springs are faulty)

Removal & Installation

1. Raise and safely support the vehicle.
2. Support the rear axle and slightly lower the vehicle enough to lessen tension on the shock absorber.
3. Remove the lower shock absorber retaining nut and washer.
4. Disconnect the lower end of the shock absorber from the mounting stud.
5. Remove the shock absorber upper end retaining nut and washer.
6. Remove the shock absorber from the vehicle.

To install:

1. Install the shock absorber onto the upper and lower mounting studs of the vehicle.
2. Install the washers and retaining nuts. Tighten the upper and lower retaining nuts to 22-30 ft. lbs. (30-41 Nm) on 2001-02 models or 22 ft. lbs. (30 Nm) for the upper bolts and 47 ft. lbs. (64 Nm) on the lower bolts.
3. Lower the vehicle.

u may have to get in trunk and there be rubber inserts in holess above the shock where they mount

REMOVAL & INSTALLATION 1983-86 Models

1. On 4-door sedan, remove the package tray and vent duct.
2. On hatchback, remove the speaker grilles.
3. Disconnect the brake line from the wheel cylinder. CAUTION
   Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if you have taken brake fluid internally, IMMEDIATELY seek medical assistance.
   
4. Remove the brake line from the brake hose.
5. Disconnect the brake hose from its bracket on the shock absorber.
6. Loosen, but do not remove, the nut holding the suspension support to the shock absorber.
7. Unbolt the shock absorber from the rear arm.
8. Unbolt and extract the shock absorber from the body. To install:
   
9. Attach the shock absorber to the body and tighten the 3 nuts to 17 ft. lbs. (25 Nm).
10. Engage the shock absorber bracket with the carrier and install the hardware. Tighten the nuts to 119 ft. lbs. (162 Nm).
11. Tighten the center suspension support nut to 36 ft. lbs. (49 Nm). There is a bearing located under the suspension support dust cover. Remove the dust cover and pack the bearing with multi-purpose grease. Once packed, reinstall the dust cover.
12. The remainder of installation is the reverse of removal. Tighten each component to specifications.
13. Have the rear wheel alignment checked.

1987-88 Models

1. On wagon models, remove the toneau cover holder.
2. Loosen the rear wheel lug nuts, raise the rear of the vehicle and support it safely. Block the front wheels.
3. Remove the rear wheels.
4. Using the proper size flare nut wrench, disconnect the backing plate hardware.
5. With a flare nut and a back-up wrench, disconnect the brake tube from the brake hose and use a small plastic container to collect the brake fluid.
6. Undo the clip and disconnect the brake hose from the shock absorber. NOTE: Before the axle bolts are removed, the axle carrier must be supported with a jack.
   
7. Support the axle carrier with a floor jack and remove the mounting bolts and nut. Disconnect the axle carrier from the shock absorber.
8. Support the shock absorber firmly by hand and remove the three mounting nuts. Remove the shock absorber from the body. To install:
   
9. Position the shock absorber onto the body and support it firmly by hand. Install the three nuts and tighten them to 23 ft. lbs. (31 Nm).
10. Attach the axle carrier to the shock absorber with the nuts and bolts. Tighten the nuts to 166 ft. lbs. (226 Nm).
11. The remainder of installation is the reverse of removal. Tighten each component to specifications.
12. Bleed the brake lines as described in Section 9.
13. Have the rear wheel alignment checked.

1989-96 Models

1. On the 4-door sedan, remove the package tray and vent duct. On 1992-96 models, it will be necessary to remove the rear seat back.
2. On the hatchback, remove the speaker grilles.
3. On the wagon models remove the tonnue cover and rear seat back.
4. Loosen the rear wheel lug nuts, raise the rear of the vehicle and support it safely. Block the front wheels.
5. Remove the rear wheels.
6. Disconnect the brake hose and the ABS speed sensor from the shock absorber.
7. If equipped with ABS, disconnect the Load Sensing Proportioning Valve (LSPV) spring from the lower arm.
8. Disconnect the stabilizer bar link from the shock absorber.
9. Support the rear axle and loosen the 2 bolts from the lower end of the shock absorber.
10. From inside the vehicle, unbolt the upper support. Fig. 1: A rubber cap covers the rear shock absorber tower nut
    Fig. 2: The upper shock absorber tower is retained by the center nut (circled) and three surrounding nuts
    
    
11. Lower the rear axle carrier and remove the two bolts.
12. Remove the shock absorber from the vehicle. To install:
    
13. Install the shock absorber assembly onto the vehicle.
14. Connect the brake hose and the ABS speed sensor to the shock absorber.
15. Connect the stabilizer bar link to the shock absorber.
16. Install the wheel and tire assembly.
17. During installation, please observe the following tighten specifications:
    1. Tighten the shock absorber-to-body bolts to 29 ft. lbs. (39 Nm).
    2. Tighten the shock absorber-to-axle carrier nuts to 166 ft. lbs. (226 Nm) on 1988-91 vehicles and 188 ft. lbs. (255 Nm) on 1992-96 vehicles.
    3. Tighten the suspension support-to-shock absorber nut to 36 ft. lbs. (49 Nm) on 1988-91 vehicles. On 1992-96 models, tighten the stabilizer bar link to shock absorber retainers to 47 ft. lbs. (64 Nm).
18. Install the rear seat back, vent duct and the package tray as required.

Shock Absorber -The rear already has air shocks on the 1999 Cadillac Deville: REMOVAL & INSTALLATION Rear

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Rear wheel Fig. 1: Exploded view of the rear shock absorber mounting
     
     
   • Negative battery cable
   • Shock absorber electrical connector from the rear suspension support, If equipped
3. Support the lower control arm with a jack to relieve the tension on the shock absorber.
4. Remove or disconnect the following:
   • Lower shock absorber mounting bolt and nut
   • Upper mounting nut, retainer, and insulator
   • Shock absorber compress by hand and remove through the upper control arm
   To install:
   
5. Position the top of the shock absorber with the insulator attached into the suspension support.
6. Install or connect the following:
   • Upper shock insulator, retainer and nut. Torque the nut to 55 ft. lbs. (74 Nm).
   • Shock absorber lower mounting nut/bolt. Torque the nut to 75 ft. lbs. (102 Nm).
   • Shock absorber electrical connector to the rear suspension support, if equipped
   • Rear wheel
   • Negative battery cable

If you have the self-leveling Nivomat rear suspension system, you can replace your Nivomat shock absorbers with standard shock absorbers. You also have to replace the coil springs with standard coil springs. Please note that a combination of standard springs and Nivomat shock absorbers, or Nivomat compatible springs and standard shock absorbers, will not work.

If it is just the cost of springs that you are concerned about, try purchasing your springs elsewhere, and having your local mechanic install them. Two good sources online are; usautoparts.net and autopartswarehouse.com . You can find Nivomat compatible coil springs for less than $120 per pair.

try removing the boot/trunk liner, the access is usually found there

Fuel pump is located on drivers side below rear driver door area near rear axle. Fuel filter is located next to pump.