Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Search Today's Posts Mark Forums Read

Thread Tools Display Modes
Old 6th April 2021, 14:31   #1
Regular poster
MG ZT-T 190

Join Date: Dec 2017
Location: Manchester
Posts: 36
Thanks: 3
Thanked 5 Times in 5 Posts
Default ZT 190 belt slipping noise?

Hi there,

My 190 makes a sort of intermittent chittering noise when the engine is cold. (It's not a constant squeel.)

It sounds to me like a belt is slipping, but I had all three drive belts replaced two or three years ago, and from what I remember, they all had teeth so I assume they can't slip.

Is there another (presumably non-toothed) belt that could be causing this noise? If not, perhaps it's a bearing somewhere.


Last edited by Reebs; 7th April 2021 at 17:36.. Reason: Thread moved to Technical Help section for better coverage.
TBennet is offline   Reply With Quote
Old 8th April 2021, 10:32   #2
This is my second home
Rover75 and Mreg Corsa.

Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,514
Thanks: 327
Thanked 3,494 Times in 2,824 Posts

Hello Tim. The toothed timing belts won't slip so are not likely to be the cause of your noise. It's much more likely coming from the external auxiiary drive belt. Rather than slippage, it will most probably be from the tensioner pulley bearing. There are lots of discussions about this and your best fix may be a new tensioner unit. If so, they're are widely available.

Example: https://www.dmgrs.co.uk/products/kv6...ebef2342&_ss=r


Last edited by T-Cut; 8th April 2021 at 10:37..
T-Cut is offline   Reply With Quote
Old 8th April 2021, 11:26   #3
Regular poster
Rover75 tourer

Join Date: Jun 2018
Location: ashton under lyne
Posts: 47
Thanks: 6
Thanked 24 Times in 17 Posts

As T-cut says the tensioner can give a similar noise.

How long does the noise last for and does switching on aircon, operating the steering make it any louder or last longer ?

After a cold start the alternator puts a high load out and this can cause that twitter on a belt with a bit of glazing till the load falls off,

To see if it is the belt or tensioner bearing, before a cold start give the belt and pulleys a misting with water, if it stops the twitter it is more than likely from the belt/pulleys.
Common sense isn't a gift, it's a punishment because you have to deal with everyone who doesn't have it.
Ducati750cc is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT +1. The time now is 15:44.

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright © 2006-2020, The Rover 75 & MG ZT Owners Club Ltd