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 15th December 2021, 13:21   #11
biffa75
Trader
 
biffa75's Avatar
 
Mk1 2004 tourer cdti + MK1 2003 Saloon CDT

Join Date: Nov 2015
Location: west yorkshire
Posts: 481
Thanks: 106
Thanked 91 Times in 57 Posts
Default

Thanks, I'll take a look at the alternator for anything obvious.

On a side note I did check the wiring around the ECU for any issues and found a small green wire with a red stripe that has broken. Looks to have been like it for some time as the copper wire inside was all dark and no longer shiny. Trying to waggle the wire with the ignition on, the fault does not appear so.. a little unsure what this wire could be at this point.

https://ibb.co/Wn89KRS
__________________
"A Rover doesn't breakdown.... It merely fails to proceed"
biffa75 is offline   Reply With Quote
Old 20th January 2022, 13:03   #12
biffa75
Trader
 
biffa75's Avatar
 
Mk1 2004 tourer cdti + MK1 2003 Saloon CDT

Join Date: Nov 2015
Location: west yorkshire
Posts: 481
Thanks: 106
Thanked 91 Times in 57 Posts
Default Small update/question

Still not arranged to meet with big Russ as yet due to other commitments.
However tried a new battery as the old one was old and undersized. New battery an 096 unit. Abs and brake fault appears for a few seconds and then goes away.. worse when Raining.

So.. got the multimeter out today, car pared up over night. Battery vtage shows 12.5v
Starting up (rear demister possibly on) check voltage again. 14.9v

So.. having a quick Google the BMW E46 forums, shows other people have experienced over charging and this can bring on abs and brake fault and transmission fault warnings etc.

My question at this point is... Would you expect the alternator on a car that has been standing overnight and so only started, idling would you expect the voltage to be 14.9 or... Could this be a sign the regulator is packing up? Could a too higher voltage really cause the abs and brake fault to flash up. If so... Why does rain make the issue worse, I tried to replicate the issue with the hose pipe and It would flash up with the fault.

Thanks
Rob
__________________
"A Rover doesn't breakdown.... It merely fails to proceed"
biffa75 is offline   Reply With Quote
Old 20th January 2022, 18:39   #13
Typhoon190
This is my second home
 
MG ZT-T 190 Monogram Typhoon

Join Date: Jan 2009
Location: Oxfordshire
Posts: 4,704
Thanks: 328
Thanked 557 Times in 443 Posts
Default

I don't know whether there is a shared earth for both the engine loom and abs circuit. Perhaps worth looking into?
Typhoon190 is offline   Reply With Quote
Old 20th January 2022, 20:42   #14
biffa75
Trader
 
biffa75's Avatar
 
Mk1 2004 tourer cdti + MK1 2003 Saloon CDT

Join Date: Nov 2015
Location: west yorkshire
Posts: 481
Thanks: 106
Thanked 91 Times in 57 Posts
Default

If there is I'd be very interested to know where I'd be willing to give the earth a clean and a check over.
__________________
"A Rover doesn't breakdown.... It merely fails to proceed"
biffa75 is offline   Reply With Quote
Old 21st January 2022, 20:45   #15
biffa75
Trader
 
biffa75's Avatar
 
Mk1 2004 tourer cdti + MK1 2003 Saloon CDT

Join Date: Nov 2015
Location: west yorkshire
Posts: 481
Thanks: 106
Thanked 91 Times in 57 Posts
Default

Another quick update.
Visited big Russ today over in liversidge
Cleared a load of fault codes that were stored, he test drove the car while monitoring the wheel speeds and found it to be okay. Battery voltage shown in t4 was fine too.
Couldn't get the abs or brake fault to flash up all the time we were there (sods law!)
So.. at this point Russ has advised I check the engine bay fuse box which I'll do when the weather warms up if the fault shows itself again.

A huge thanks to Russ for the time he gave today. Very knowledgeable friendly fella

Thanks
Rob
__________________
"A Rover doesn't breakdown.... It merely fails to proceed"
biffa75 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 18:43.


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