XC90 Engine vibration fixed with 2 engine mounts

Summary

In this video, the presenter tackles a common issue with the Volvo XC90—vibration while idling or in reverse. After diagnosing the problem, the presenter identifies faulty engine mounts as the culprit. He walks through the process of replacing the rear and side engine mounts, detailing the tools and steps needed. The result is a smoother ride, with the steering wheel no longer vibrating and the car feeling like new. The video is a helpful guide for DIY enthusiasts looking to fix similar vibration issues in their own vehicle.

Takeaways

• 😀 The Volvo XC90 has a vibration issue, especially noticeable when in reverse or on a banked surface.
• 😀 The problem was traced back to a leaking rear engine mount, and the front engine mount was also inspected for wear.
• 😀 The mechanic checks various components like the prop shaft, drive shafts, and engine mounts to identify the source of the vibration.
• 😀 The procedure for replacing the rear engine mount involves lifting the engine, removing bolts, and swapping out the old mount for a new one.
• 😀 Special attention was given to the vacuum pipe connection that needed to be disconnected before removing the mount.
• 😀 A Snap-on socket and ratchet were used to remove tight bolts, and the mechanic used a quarter-inch ratchet for better control in tight spaces.
• 😀 When installing the new engine mount, the metal shield must be positioned correctly before securing it in place.
• 😀 The new engine mount was installed with a new vacuum fitting, and the vacuum pipe was re-routed to prevent rubbing.
• 😀 After replacing the rear engine mount, the mechanic proceeded with the front engine mount, which didn't need replacement due to its good condition.
• 😀 Once the mounts were replaced, the vibration issue was resolved, and the car now runs smoothly, feeling like a brand new vehicle.
• 😀 The mechanic encourages viewers to like and subscribe to the channel and leave comments with any questions or feedback.

Q & A

What is the main issue with the vehicle in this video?

The main issue is vibration that occurs when the car is in reverse, which is especially noticeable when parked on a bank.

What did the mechanic check first to diagnose the vibration problem?

The mechanic first checked the prop shaft, the drive shafts, and the mounts for any excessive movement or damage.

What was discovered about the rear engine mount?

The rear engine mount was leaking vacuum and had a split at the bottom, which was causing the vibration.

What tools are required for replacing the engine mounts?

Tools needed include a 17mm bolt, a 19mm nut, a 14mm nut, a 15mm nut, a quarter-inch ratchet, and a snap-on socket.

Why is the mechanic using a jack under the gearbox?

The jack is used to lift the engine slightly in order to create enough space to remove and replace the engine mount.

How is the vacuum pipe related to the engine mount replacement?

The vacuum pipe is connected to the engine mount, so it needs to be disconnected before removing the mount.

What steps are involved in installing the new engine mount?

To install the new engine mount, the metal shield is put in place, the new mount is positioned, the vacuum pipe is connected, and the engine is lowered before bolting the mount into place.

Why did the mechanic re-route the vacuum pipe?

The mechanic re-routed the vacuum pipe to avoid it rubbing against other components, which could cause damage over time.

What was the result after the new engine mount was installed?

After the new engine mount was installed, the vibration in the steering wheel and the pedals was significantly reduced, making the car feel much smoother, almost like new.

What parts did the mechanic not need to replace?

The front engine mount did not need replacement because it was still holding its vacuum and was in good condition.