Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club General Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 9th September 2020, 14:52   #1
davidbooker
Gets stuck in
 
davidbooker's Avatar
 
'51 Rover 75 2.5 V6 Conn. Purchased 02/05

Join Date: Dec 2006
Location: Whitby
Posts: 571
Thanks: 8
Thanked 33 Times in 22 Posts
Default EP Message

We went for lunch in the 75. When I tried to restart her, the EP message came up, and, despite turning vigorously, the engine would not restart. I disconnected the battery for half an hour, with no luck. The AA man came and, after checking the plenum, he cleaned some large connectors under the air box, and the car started instantly. He assured me that I would have no further trouble.
Two days later, we had lunch at the same place, and exactly the same thing happened. This time, a two minute disconnection of the battery did the trick, and I was able to drive home.
What could be causing this? I usually only use the car on Sundays (we are off this week), and I usually disconnect the battery after use, as it tends to go flat during the week, particularly in cold weather.
Many thanks.

Last edited by davidbooker; 9th September 2020 at 14:55..
davidbooker is offline   Reply With Quote
Old 9th September 2020, 14:59   #2
suzublu
This is my second home
 
suzublu's Avatar
 
rover 75 1.8 vvc club se wedgwood blue

Join Date: Aug 2009
Location: Seaton Carew
Posts: 26,880
Thanks: 65
Thanked 7,142 Times in 4,642 Posts
Default

Some possible clues here David https://the75andztclub.co.uk/forum/s...d.php?t=305081
suzublu is offline   Reply With Quote
Old 9th September 2020, 18:20   #3
Mike Noc
This is my second home
 
Mike Noc's Avatar
 
Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4.

Join Date: Jul 2009
Location: Hampshire
Posts: 11,531
Thanks: 3,470
Thanked 3,119 Times in 2,247 Posts
Default

When it fails to start does the oil light come on with key to position II as it should?
Mike Noc is offline   Reply With Quote
Old 10th September 2020, 09:09   #4
Jamiewelch
Posted a thing or two
 
Jamiewelch's Avatar
 
Alpina D3

Join Date: Sep 2014
Location: Cheslyn hay
Posts: 1,002
Thanks: 58
Thanked 294 Times in 227 Posts
Default

Quote:
Originally Posted by Mike Noc View Post
When it fails to start does the oil light come on with key to position II as it should?
I've got the same thinking, ECU fault. @OP has the ecu ever been wet and do you check the plenums regularly?
Jamiewelch is offline   Reply With Quote
Old 10th September 2020, 09:16   #5
tourer
Posted a thing or two
 
Rover 75 Tourer CDT Auto.

Join Date: Oct 2011
Location: Long Eaton
Posts: 1,341
Thanks: 30
Thanked 220 Times in 160 Posts
Default

Personally, I think I would find somewhere else to have lunch.
Simples!😁😁
tourer is offline   Reply With Quote
Old 10th September 2020, 10:20   #6
Yorkshire GOC
I really should get out more.......
 
Yorkshire GOC's Avatar
 
Rover 75 connoisseur se v6 auto

Join Date: May 2014
Location: Hull
Posts: 2,058
Thanks: 1,842
Thanked 623 Times in 469 Posts
Default

Are not MGR petrol ECU's sealed - mine certainly is - only the Diesels are prone to water damage/ingress
__________________
She came off the Longbridge Line on 20-05-2003

The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.
Yorkshire GOC is offline   Reply With Quote
Old 10th September 2020, 10:25   #7
Jamiewelch
Posted a thing or two
 
Jamiewelch's Avatar
 
Alpina D3

Join Date: Sep 2014
Location: Cheslyn hay
Posts: 1,002
Thanks: 58
Thanked 294 Times in 227 Posts
Default

Quote:
Originally Posted by Yorkshire GOC View Post
Are not MGR petrol ECU's sealed - mine certainly is - only the Diesels are prone to water damage/ingress
I assumed diesel

Do you have a sunroof?
Jamiewelch is offline   Reply With Quote
Old 10th September 2020, 11:01   #8
genpk
Posted a thing or two
 
Rover 75 Saloon MGZT

Join Date: Jul 2012
Location: Perth, AUSTRALIA
Posts: 1,662
Thanks: 3
Thanked 461 Times in 299 Posts
Default

I had the EP warning which affected the transmission .
Thought the auto was knackered.
Turned out the large plug that comes from the auto box (under the airbox) had twisted a little loose
Re connected it tightly and all has been good since.
genpk is offline   Reply With Quote
Old 10th September 2020, 16:53   #9
davidbooker
Gets stuck in
 
davidbooker's Avatar
 
'51 Rover 75 2.5 V6 Conn. Purchased 02/05

Join Date: Dec 2006
Location: Whitby
Posts: 571
Thanks: 8
Thanked 33 Times in 22 Posts
Default

Quote:
Originally Posted by genpk View Post
I had the EP warning which affected the transmission .
Thought the auto was knackered.
Turned out the large plug that comes from the auto box (under the airbox) had twisted a little loose
Re connected it tightly and all has been good since.
This is effectively what the AA man did on mine - he undid the plug and said the contacts were dirty and oily. He did a thorough clean-up, and all seemed fine, until a couple of days later, when the problem recurred, albeit momentarily. It may be just a glitch. I'll try taking the car out for runs without stopping, so any further problems would occur on my driveway......

Last edited by davidbooker; 12th September 2020 at 13:37..
davidbooker is offline   Reply With Quote
Old 11th September 2020, 12:46   #10
genpk
Posted a thing or two
 
Rover 75 Saloon MGZT

Join Date: Jul 2012
Location: Perth, AUSTRALIA
Posts: 1,662
Thanks: 3
Thanked 461 Times in 299 Posts
Default

I noticed on my plug somone had wrapped the joint of the plugs with gaffa tape to stop it un twisting.
genpk 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. The time now is 00:04.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd