Diagnosis And Testing - Coil Spring And Shock

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

A knocking or rattling noise from a shock absorber may be caused by movement between mounting bushings and metal brackets or attaching components. These noises can usually be stopped by tightening the attaching nuts. If the noise persists, inspect for damaged and worn bushings, and attaching components. Repair as necessary if any of these conditions exist.

A squeaking noise from the shock absorber may be caused by the hydraulic valving and may be intermittent. This condition is not repairable and the shock absorber must be replaced.

The shock absorbers are not refillable or adjustable. If a malfunction occurs, the shock absorber must be replaced. To test a shock absorber, hold it in an upright position and force the piston in and out of the cylinder four or five times. The action throughout each stroke should be smooth and even.

If the vehicle is used for severe, off-road operation, the springs should be examined periodically. Check for broken springs.

SPRING AND SHOCK ABSORBER

CONDITION	POSSIBLE CAUSES	CORRECTION
REAR OF VEHICLE SAGS	1. Broken spring.	1. Replace spring.
REAR OF VEHICLE SAGS	2. Spring fatigue.	2. Replace spring.
SPRING NOISE	1. Worn springs.	1. Replace spring.
	2. Worn isolators.	2. Replace isolators.
	3. Severely overloaded.	3. Check GVW of vehicle (Unload cargo).
SHOCK NOISE	1. Loose mounting fastener.	1. Tighten to specification.
	2. Worn bushings.	2. Replace shock.
	3. Leaking shock.	3. Replace shock.