Introduction
This document outlines potential causes and solutions for a knocking noise emanating from the front suspension of a Toyota Prado, particularly noticeable on light road undulations. The focus is on identifying and addressing the issue based on shared experiences.
Problem
A knocking noise is present, primarily from the front left side, when driving over slight bumps. Initial checks, including tie rod end replacement, strut removal/reseating, and bush inspections (sway bar, suspension), have not resolved the issue.
Potential Solutions
-
Strut Assembly:
- Inspect the lower strut bush for wear or damage.
- Consider a faulty strut or broken spring.
- Check the strut top hat for excessive wear.
-
Rack End:
- Examine the rack end for play or movement. Grip the rack end through the rubber boot and check for movement while the vehicle is on a shaker hoist.
-
Body Mounts:
- SOLUTION: Inspect the front left body mount for deterioration. Specifically, check the rubber cushion for wear around the inner circumference. A worn body mount can allow the steel inner sleeve to contact the body mount bracket, causing a knocking sound.
- To inspect, drop the nuts off the front body mounts and remove the lower cushion.
-
Flares:
- Check the front flares for looseness, especially the retaining clips. Secure the flare temporarily with masking tape to diagnose. SOLUTION: Replace clips if this resolves the sound
Diagnosis Tools
- Shaker Hoist: Using a shaker hoist can help replicate the knocking sound, making it easier to pinpoint the source.
This technical summary was auto-generated based on recovered archives. Do not rely on its factual accuracy. Refer to the original thread. Source: View Original Conversation
Continue the discussion below.