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
Notices

Reply
 
Thread Tools Display Modes
Old 12th February 2020, 17:36   #1
janker
Avid contributor
 
janker's Avatar
 
Rover 75 Saloon & MGZT 190

Join Date: Jun 2012
Location: Leek
Posts: 180
Thanks: 169
Thanked 17 Times in 13 Posts
Default MG cut out then restarted

Hi Everyone
I have a MG Zt 190 Petrol 2001 just today i came home from work started up as normal drove about 200 yds then just cut out tried restart turned over fine but didnt fire,Turned key off then on tried again and started and drove home all fine.

I have checked make sure the plenums are clear after all this bad rain and its dry as a bone,Also pluged into OB2 and scanned for codes but shows no Faults logged.

One thing i noticed when home when i rev it up its sounds great but just around 1000 rpm when letting throttle off there is a slight shudder from engine, When it is ticking over seems fine ?

It has had a new Camshaft sensor fitted a few months ago.Any ideas what to check next ??

cheers julian
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381
This vehicle was the 2,551st 75 CDT Club to be made out of 3,403
This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s

My New Addition
MGZT 190 Trophy Blue 2001 Petrol.
janker is offline   Reply With Quote
Old 12th February 2020, 21:19   #2
Yorkshire GOC
Gets stuck in
 
Yorkshire GOC's Avatar
 
MG ZT-T 1.8T

Join Date: May 2014
Location: Hull
Posts: 936
Thanks: 798
Thanked 279 Times in 210 Posts
Default

A failing crank sensor will cause a cut out and non starting (a failing cam sensor cannot cause a cut out) - i have had this issue and eventually she would not start - giveaway is the rev counter needle does not move when your turn her over. A failing crank sensor tends to fail as it warms up - but is OK again once it cools down.
__________________
  • 5,365th ZT-T to run off the production line, out of 8,249
  • 59th ZT-T 160 (1.8T) to be made out of 118
  • 894th ZT-T in XPower Grey to be made out of 1,673 XPower Grey ZT-T's

DISAPPOINTING GREY AND PROUD
Yorkshire GOC is offline   Reply With Quote
The Following User Says Thank You to Yorkshire GOC For This Useful Post:
Old 13th February 2020, 00:02   #3
janker
Avid contributor
 
janker's Avatar
 
Rover 75 Saloon & MGZT 190

Join Date: Jun 2012
Location: Leek
Posts: 180
Thanks: 169
Thanked 17 Times in 13 Posts
Default

Quote:
Originally Posted by Yorkshire GOC View Post
A failing crank sensor will cause a cut out and non starting (a failing cam sensor cannot cause a cut out) - i have had this issue and eventually she would not start - giveaway is the rev counter needle does not move when your turn her over. A failing crank sensor tends to fail as it warms up - but is OK again once it cools down.
Cheers Yorkshire GOC
Im not sure if the crank sensor has ever being changed as i have only had the car about 3 months,Good tip about the rev counter will check when it happens again,Which it will im sure many thanks for your advice appreciated.
julian
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381
This vehicle was the 2,551st 75 CDT Club to be made out of 3,403
This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s

My New Addition
MGZT 190 Trophy Blue 2001 Petrol.
janker is offline   Reply With Quote
Old 13th February 2020, 22:47   #4
janker
Avid contributor
 
janker's Avatar
 
Rover 75 Saloon & MGZT 190

Join Date: Jun 2012
Location: Leek
Posts: 180
Thanks: 169
Thanked 17 Times in 13 Posts
Default

If it was the Crank sensor would it not log a fault in the ECU as it says no faults found when i did a a diagnostics with Ob2 Scanner ??Its not happened today after going to and from work very strange.
cheers julian
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381
This vehicle was the 2,551st 75 CDT Club to be made out of 3,403
This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s

My New Addition
MGZT 190 Trophy Blue 2001 Petrol.
janker is offline   Reply With Quote
Old 14th February 2020, 00:06   #5
Chunky2778
Regular poster
 
MG ZT

Join Date: Mar 2019
Location: Plymouth
Posts: 37
Thanks: 0
Thanked 3 Times in 2 Posts
Default

Quote:
Originally Posted by janker View Post
If it was the Crank sensor would it not log a fault in the ECU as it says no faults found when i did a a diagnostics with Ob2 Scanner ??Its not happened today after going to and from work very strange.
cheers julian
Crank sensor failure is a common cause of cutting out on Fiat and Alfa JTD engines that also use Bosch set-ups, never saw an error code in over ten years with Fiat but replaced a large number of them.

As a previous poster said they fail when hot then sort themselves out as they cool, I think it's to do with the windings deteriorating in them, they were only around 25-30 quid for a Fiat so probably worth doing anyway while also checking for any damage to the phonic wheel if it's visible.
Chunky2778 is offline   Reply With Quote
The Following User Says Thank You to Chunky2778 For This Useful Post:
Old 14th February 2020, 16:25   #6
Yorkshire GOC
Gets stuck in
 
Yorkshire GOC's Avatar
 
MG ZT-T 1.8T

Join Date: May 2014
Location: Hull
Posts: 936
Thanks: 798
Thanked 279 Times in 210 Posts
Default

Quote:
Originally Posted by janker View Post
If it was the Crank sensor would it not log a fault in the ECU as it says no faults found when i did a a diagnostics with Ob2 Scanner ??Its not happened today after going to and from work very strange.
cheers julian
Not on my OB scanner showed no fault code on 2 occasions - if it happens again watch the rev counter. Also I went nearly 4 weeks between non starts
__________________
  • 5,365th ZT-T to run off the production line, out of 8,249
  • 59th ZT-T 160 (1.8T) to be made out of 118
  • 894th ZT-T in XPower Grey to be made out of 1,673 XPower Grey ZT-T's

DISAPPOINTING GREY AND PROUD

Last edited by Yorkshire GOC; 14th February 2020 at 16:28..
Yorkshire GOC is offline   Reply With Quote
The Following User Says Thank You to Yorkshire GOC For This Useful Post:
Old 14th February 2020, 20:33   #7
janker
Avid contributor
 
janker's Avatar
 
Rover 75 Saloon & MGZT 190

Join Date: Jun 2012
Location: Leek
Posts: 180
Thanks: 169
Thanked 17 Times in 13 Posts
Default

Quote:
Originally Posted by Yorkshire GOC View Post
Not on my OB scanner showed no fault code on 2 occasions - if it happens again watch the rev counter. Also I went nearly 4 weeks between non starts
Cheers
Ive ordered a new sensor on its way so hopefully will eliminate something and fingers crossed will post after fitting and thankyou to everybody for helping me.
cheers julian
__________________
This vehicle was the 53,401st 75 to run off the production line, out of 112,381
This vehicle was the 2,551st 75 CDT Club to be made out of 3,403
This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s

My New Addition
MGZT 190 Trophy Blue 2001 Petrol.
janker is offline   Reply With Quote
Reply

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 13:25.


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