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 24th August 2019, 19:33   #1
hogweed
I really should get out more.......
 
Rover 75 Connoisseur CDTI; MG TF 135

Join Date: Jan 2010
Location: Carnmoney
Posts: 2,228
Thanks: 657
Thanked 207 Times in 178 Posts
Default ABS/speedo problem?

Was driving along earlier today when I heard a faint tapping from under the front of the car somewhere Ė shortly after that, the ABS light came on. Carís driving normally, but the light has come and gone all day (mostly come).


This all happened a long way from home. As I was driving back, suddenly the speedo needle dropped to 0. It stayed there a long time, then began a pattern of slowly climbing up to 30 or 40 (I was doing 70 or so), then dropping back to 0 again for a while. Them every so often, it would indicate my correct speed (amazing at how good I proved to be at guessing!)


Do these symptoms indicate a single fault, or worse? Any advice appreciated.


PS donít know if itís relevant, but about Ĺ an hour before it happened, the front o/s wheel got a bit of a thump in a potholeÖ


Ta
__________________
Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.
hogweed is offline   Reply With Quote
Old 24th August 2019, 21:30   #2
Tim JMGRs
Regular poster
 
MG ZT

Join Date: Jul 2018
Location: Leigh
Posts: 97
Thanks: 72
Thanked 29 Times in 26 Posts
Default

ABS sensor, right hand front wheel.
Tim
Tim JMGRs is offline   Reply With Quote
The Following User Says Thank You to Tim JMGRs For This Useful Post:
Old 24th August 2019, 22:27   #3
Dawn
I really should get out more.......
 
MG ZT 180+ auto

Join Date: May 2016
Location: Ilkeston, Derbys
Posts: 2,711
Thanks: 281
Thanked 1,097 Times in 488 Posts
Default

What Tim says. I had it on my first 75. The fuel gauge can actcweird with it as well, bizarrely!
Dawn is online now   Reply With Quote
The Following User Says Thank You to Dawn For This Useful Post:
Old 24th August 2019, 22:34   #4
hogweed
I really should get out more.......
 
Rover 75 Connoisseur CDTI; MG TF 135

Join Date: Jan 2010
Location: Carnmoney
Posts: 2,228
Thanks: 657
Thanked 207 Times in 178 Posts
Default

Thanks chaps. Yes haven't had the fuel gauge (I think) but the Range went up to 750 miles at one stage, on less than Ĺ a tank... then back to normal a bit later.


I've read a whole pile of posts since posting, and I was cautiously coming to that conclusion, but best to hear it directly. I wonder if the pothole could have dislodged something... anyway, sounds like it's relatively safe to drive till the man with the T4 gets back from his honeymoon
__________________
Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.
hogweed is offline   Reply With Quote
Old 24th August 2019, 23:58   #5
p2roverman
Gets stuck in
 
Rover 75 Connie Tourer & Connie SE Saloon & Club SE Tourer

Join Date: Sep 2014
Location: Leeds
Posts: 796
Thanks: 176
Thanked 62 Times in 52 Posts
Default

You don't need a T4 check, just fit a replacement OSF ABS sensor.
p2roverman is offline   Reply With Quote
Old 25th August 2019, 08:22   #6
hogweed
I really should get out more.......
 
Rover 75 Connoisseur CDTI; MG TF 135

Join Date: Jan 2010
Location: Carnmoney
Posts: 2,228
Thanks: 657
Thanked 207 Times in 178 Posts
Default

Quote:
Originally Posted by p2roverman View Post
You don't need a T4 check, just fit a replacement OSF ABS sensor.

Cheers. I need him to do the job for me though
__________________
Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.
hogweed is offline   Reply With Quote
Old 25th August 2019, 11:31   #7
hogweed
I really should get out more.......
 
Rover 75 Connoisseur CDTI; MG TF 135

Join Date: Jan 2010
Location: Carnmoney
Posts: 2,228
Thanks: 657
Thanked 207 Times in 178 Posts
Default

Or... could I do it myself? Realise that's hard for anybody else to answer, but it would really depend on how much dismantling would be needed. Don't fancy much more than taking the wheel off!
__________________
Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.
hogweed is offline   Reply With Quote
Old 25th August 2019, 11:39   #8
vitesse
Posted a thing or two
 
Rover 75 Saloon Auto Conn

Join Date: Jul 2011
Location: Gšvle, Sweden
Posts: 1,330
Thanks: 193
Thanked 397 Times in 319 Posts
Default

Depends really on a) if itís just the sensor or b) the bearing playing up, and how much the existing sensor likes its home. Sometimes these sensors donít like being evicted and need to be drilled out (without damaging the bearing!). You could try unbolting the sensor and see if it comes out (I doubt it) and if it does then itís very easy to fit a new one. Otherwise itís much more than just a wheel off job.

Regards
vitesse is offline   Reply With Quote
The Following User Says Thank You to vitesse For This Useful Post:
Old 26th August 2019, 15:53   #9
ratchet
Posted a thing or two
 
ZT-T + CTDI

Join Date: Oct 2014
Location: Gone walkabout
Posts: 1,190
Thanks: 181
Thanked 361 Times in 289 Posts
Default

Just in case it turns into a pig of a job, and whilst the speedo is still working - take it for a run and note down what revs and what gear you need to be in to keep within speed limits.......or keep your sat nag switched on when driving.

I'd also check the cable and connections are good before attempting to remove the sensor.
ratchet is offline   Reply With Quote
The Following User Says Thank You to ratchet For This Useful Post:
Old 26th August 2019, 16:18   #10
hogweed
I really should get out more.......
 
Rover 75 Connoisseur CDTI; MG TF 135

Join Date: Jan 2010
Location: Carnmoney
Posts: 2,228
Thanks: 657
Thanked 207 Times in 178 Posts
Default

Quote:
Originally Posted by ratchet View Post
Just in case it turns into a pig of a job, and whilst the speedo is still working - take it for a run and note down what revs and what gear you need to be in to keep within speed limits.......or keep your sat nag switched on when driving.

Already noted

Quote:
Originally Posted by ratchet View Post
I'd also check the cable and connections are good before attempting to remove the sensor.

Yes, thinking that, as it happened after banging the front wheelÖ is it obvious where the sensor is when you take the wheel off?
__________________
Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.
hogweed 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 18:18.


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