No speedo - help please! - Page 2

Arctic · 28th February 2022, 09:30

Quote:

Originally Posted by Odd Job

Not sure what I'm doing wrong, but I cant find Big Russ on the user list to send him a message.

Can anyone help put me in touch with him please ?

.

Hi Richard.
You could always take out the ECM and check to see if it as been wet, link blow on how to remove the ECM.

https://www.the75andztclub.co.uk/for...d.php?t=281582

A few photos from me below.

1

2

3

press in the tag and slide the clip down.

4

5

move on to the next connector same as above & so on.

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Then slide out the ECM.

10

11

You can then get the ECM on a work bench in a clean area.

12

flip it over and undo the small torx screws lift the back off.

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Check for any wet area or green/white deposits.

15

Lift the board out and check the other side.

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If you do see any deposits you can clean them with switch cleaner only and a soft brush, then some have put it in a warm airing cupboard to dry out, re-fitted it and see if it started.

Either way that is how you remove the ECM

bionicarm666 · 1st March 2022, 06:42

Hi, I pretty much have the same problem, but a few differences. And I live in Sweden, so my Rover 75 is left hand drive (2003 2,0 KV6).

I had a mouse living behind the glove compartement and she had built a nest behind the fuses. I catched her and let her out a few hundred meters away, and since then there has been some strange electrical flaws much like "Odd job" but the list of things not working is longer.

Speedo`s not working, but odometer is working.
Handbrake light on all the time.
Wind shield wipers, electric chair, electric windows, ac-unit does not work when I start the car, but begins to work after a minute or so (but not speedo)
One strange thing is that everything works fine when I just turn the key to position no. 1 (ign.) but not in position no 2 or when I start the car.
I have done the Instrument cluster check and it seems to work fine. The speedo cable in the RH front wheel is newly replaced.
The plenum is dry, and i looked for loose grounds on the right a-pillar. The carpet is dry.
It feels like some bad ground, or maybe the ignition lock as it behaves differently depending on the key position.
Any suggestions are much appreciated

Best regards,

Jonas Paradis, Sweden

Yorkshire GOC · 1st March 2022, 17:21

I would check the wiring to both fuse boxes especially look at the wiring going into the bottom of the under bonnet fuse box looks like your mouse has been nibbling the wires so may have also damaged the CANBUS wiring - CANBUS faults do manifest in multiple electrical glitches.

bionicarm666 · 3rd March 2022, 13:48

Thank you, I`ll try to checka that! Would there be a point in taking out the instrument cluster to see if there is any damage behind?

stevestrat · 3rd March 2022, 14:01

Quote:

Originally Posted by Odd Job

Not sure what I'm doing wrong, but I cant find Big Russ on the user list to send him a message.

Can anyone help put me in touch with him please ?

Lose the space, its BigRuss. Here's the link to his message page. https://www.the75andztclub.co.uk/for...o=newpm&u=1792

Yorkshire GOC · 3rd March 2022, 19:18

Quote:

Originally Posted by bionicarm666

Thank you, I`ll try to checka that! Would there be a point in taking out the instrument cluster to see if there is any damage behind?

I would check both fuse boxes first

bionicarm666 · 11th March 2022, 13:04

No visual damage that I can see...

1st March 2022, 17:21	#13
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,068 Thanks: 1,842 Thanked 623 Times in 469 Posts	I would check the wiring to both fuse boxes especially look at the wiring going into the bottom of the under bonnet fuse box looks like your mouse has been nibbling the wires so may have also damaged the CANBUS wiring - CANBUS faults do manifest in multiple electrical glitches. __________________ 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.

1st March 2022, 06:42	#12
bionicarm666 Newbie Rover 75 Tourer Join Date: Sep 2017 Location: Kinna Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	Hi, I pretty much have the same problem, but a few differences. And I live in Sweden, so my Rover 75 is left hand drive (2003 2,0 KV6). I had a mouse living behind the glove compartement and she had built a nest behind the fuses. I catched her and let her out a few hundred meters away, and since then there has been some strange electrical flaws much like "Odd job" but the list of things not working is longer. Speedo`s not working, but odometer is working. Handbrake light on all the time. Wind shield wipers, electric chair, electric windows, ac-unit does not work when I start the car, but begins to work after a minute or so (but not speedo) One strange thing is that everything works fine when I just turn the key to position no. 1 (ign.) but not in position no 2 or when I start the car. I have done the Instrument cluster check and it seems to work fine. The speedo cable in the RH front wheel is newly replaced. The plenum is dry, and i looked for loose grounds on the right a-pillar. The carpet is dry. It feels like some bad ground, or maybe the ignition lock as it behaves differently depending on the key position. Any suggestions are much appreciated Best regards, Jonas Paradis, Sweden

3rd March 2022, 13:48	#14
bionicarm666 Newbie Rover 75 Tourer Join Date: Sep 2017 Location: Kinna Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	Thank you, I`ll try to checka that! Would there be a point in taking out the instrument cluster to see if there is any damage behind?

11th March 2022, 13:04	#17
bionicarm666 Newbie Rover 75 Tourer Join Date: Sep 2017 Location: Kinna Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	No visual damage that I can see...