Chirp noise in the steering pump
Possible Source(s)
- Loose or worn accessory drive belt. Action(s) to take: INSTALL a new accessory drive belt. For additional information, refer to «SPECIFICATIONS & DRIVE BELT ROUTING»(ref-164247)
Whine type noise
Possible Source(s)
- Aerated fluid. Action(s) to take: BLEED the system. For additional information, «POWER STEERING SYSTEM BLEEDING - VIN RANGE: L00600->L86901»(ref-199531-S34110822662005101900000) .
Noise
| Condition | Possible Sources | Action |
|---|---|---|
| Accessory drive belt squeal | Incorrect accessory drive belt tension or accessory drive belt glazed. | CHECK accessory drive belt condition and INSTALL a new accessory drive belt as necessary. For additional information, refer to SPECIFICATIONS & DRIVE BELT ROUTING . |
| Chirp noise in the steering pump | Loose or worn accessory drive belt. | CHECK accessory drive belt condition and INSTALL a new accessory drive belt as necessary. For additional information, refer to SPECIFICATIONS & DRIVE BELT ROUTING . |
| Power steering pump noisy | Low power steering fluid. | CHECK steering system for signs of steering fluid loss. BLEED the power steering system. For additional information, refer to POWER STEERING SYSTEM BLEEDING - VIN RANGE: L86902->M45254 . |
| Power steering pump worn or otherwise defective. | CHECK for leaks. REPAIR as necessary. CHECK the power steering pressure. For additional information, REFER to the POWER STEERING PRESSURE TEST . INSTALL a new power steering pump as necessary. For additional information, refer to POWER STEERING | |
| Whine type noise | Aerated fluid. | BLEED the power steering system. For additional information, refer to POWER STEERING SYSTEM BLEEDING - VIN RANGE: L86902->M45254 . |
| Power steering pump. | CHECK for leaks. REPAIR as necessary. INSTALL a new power steering pump as necessary. For additional information, refer to POWER STEERING | |
| Noise during steering gear movement | Low power steering fluid. | CHECK steering system for signs of steering fluid loss. BLEED the power steering system. For steering. For additional, POWER STEERING SYSTEM BLEEDING - VIN RANGE: L86902->M45254 |
| Water contamination to the power steering fluid. | DRAIN the power steering system. BLEED the power steering system. For additional information, refer to POWER STEERING SYSTEM BLEEDING - VIN RANGE: L86902->M45254 . | |
| Cavitation due to restricted power steering feed hose. | CHECK and reposition power steering feed hoses and INSTALL new hoses as necessary. | |
| Continuous noise | Low power steering fluid. | CHECK steering system for signs of steering fluid loss. BLEED the power steering system. For additional information, refer to POWER STEERING SYSTEM BLEEDING - VIN RANGE: L86902->M45254 . |
| Power steering pump drive loose. | CHECK power steering coupling and power steering pump. INSTALL a new power steering coupling or power steering pump as necessary. For additional information, refer to POWER STEERING | |
| Incorrect accessory drive belt tension or accessory drive belt glazed. | CHECK accessory drive belt condition and INSTALL a new accessory drive belt as necessary. For additional information, refer to SPECIFICATIONS & DRIVE BELT ROUTING . | |
| Power steering pump drive pulley loose. | CHECK and TIGHTEN the power steering pump drive pulley retaining bolts as necessary. | |
| Power steering pump retaining bolts loose. | CHECK the power steering pump retaining bolts and TIGHTEN as necessary. | |
| Power steering hose/pipe in contact with the vehicles body. | CHECK and reposition power steering hoses/pipes, INSTALL new hoses/pipes as necessary. | |
| Power steering hose restricted/twisted. | CHECK and reposition power steering hose, replace hose as necessary. |
Steering Fault Diagnosis By Symptom - Noise
Vibration
| Condition | Possible Sources | Action |
|---|---|---|
| Feedback (knocking noises in the steering gear) - condition where roughness is felt in the steering wheel by the driver when the vehicle is driven over rough surfaces | Loose/worn tie-rods. | INSTALL a new tie-rod end. For additional information, refer to STEERING LINKAGE . |
| Steering gear retaining bolts loose or damaged. | CAUTION: DO NOT attempt to adjust the steering gear yoke. Failure to follow this instruction will result in the steering gear warranty to become invalid. CHECK and TIGHTEN the steering gear retaining bolts. INSTALL new retaining bolts as necessary. For additional information, refer to POWER STEERING | |
| Loose suspension bushing, bolts or ball joints. | TIGHTEN or INSTALL new components as necessary. For additional information, refer to FRONT SUSPENSION | |
| Steering column retaining bolts loose. | CAUTION: DO NOT attempt to adjust the steering gear yoke. Failure to follow this instruction will result in the steering gear warranty to become invalid. CHECK and TIGHTEN the steering column retaining bolts/nuts and pinch bolts if required. For additional information, refer to STEERING COLUMN | |
| Excessive wear in steering column assembly. | CHECK for steering column for wear in the universal joints and bearings. If wear is present, INSTALL a new steering column as necessary. For additional information, refer to STEERING COLUMN | |
| Nibble (Shimmy) Oscillation of the steering wheel (not vertical which is SHAKE). This is driven by road wheel imbalance. | Road wheel imbalance. | CHECK for road wheel imbalance. CHECK for relevant SERVICE BULLETINS/SERVICE ACTIONS. |
| Steering wheel replacement. | CHECK for relevant SERVICE BULLETINS/SERVICE ACTIONS. | |
| Rack replacement. | CHECK for relevant SERVICE BULLETINS/SERVICE ACTIONS. |
| CAUTION |
|---|
| DO NOT attempt to adjust the steering gear yoke. Failure to follow this instruction will result in the steering gear warranty to become invalid. |
| CAUTION |
|---|
| DO NOT attempt to adjust the steering gear yoke. Failure to follow this instruction will result in the steering gear warranty to become invalid. |
Steering Fault Diagnosis By Symptom - Vibration
Hum
Continuous sound of varying frequencies, like a wire humming in the wind.
Rattle
A sound suggesting looseness, such as marbles rolling around in a can.
Squeak
High-pitched sound like rubbing a clean window.
Column Rattle
Column rattle is a metallic sounding noise created when applying a highly impulsive force to the steering wheel. Column rattle is often used to combine the more general group of column noises including clonk and column knock. Column rattle noises can be caused by clonk, knock, loose column components, bonus parts etc. A series of parked, straight-line driving, and cornering test should be carried out to isolate the source/sources.
Rattles
Rattles are noises caused by knocking or hitting with components in the steering system. Steering rattles can occur in the engine compartment, the suspension, or the passenger compartment. Rattles can be caused by loose parts, movable and flexible parts, and improper clearances.
Squeaks/Scrapes
Squeaks/Scrapes are noises due to friction or component rubbing anywhere in the steering system. Squeaks/Scrapes have appeared in steering linkages and joints, in column components and in column and steering wheel trim parts.