speedometer fault

Rover 75 Tourer · 4th October 2019, 19:07

Speedo has started to rise slowly to 9/10 mph and no further and is slow to return to zero when car stops. Stripped hub and cleaned area on and around reluctor ring and abs sensor, no juddering at low brakeing speed to indicate abs fault any ideas where fault may lie

trikey · 4th October 2019, 19:10

Do an ipk test to rule out a faulty speedo..

Rover 75 Tourer · 4th October 2019, 19:21

Can you run through how to do ipk test, cheers

trikey · 4th October 2019, 19:25

Turn ign on
Hold the trip reset button in until the display changes
Press the button until you select 2.0 on the display
the display will then change to 'on' 'off'
When it says 'off' press the button again until the display reads 2.1

This will then test the ipk.

Rover 75 Tourer · 4th October 2019, 20:22

Thanks will do tommorow let you know result

marinabrian · 5th October 2019, 12:29

Dick, take a look at the plug on the ABS modulator, it's common to find the pins damaged or corroded........battery box out I'm afraid

Brian

BigRuss · 5th October 2019, 14:34

As Brian said above check in the ABS ECU connector for corrosion.
I had one yesterday that was badly corroded and was causing an intermittent Speedo

Russ

Rover 75 Tourer · 5th October 2019, 16:53

Ran ipk test could only get to 2.0. However a test ran and showed all W/lights & fuel,temp,rev counter and speedo to be working. On going back to road test showed ABS light staying on and neither the speedo or mileage recorder working.Can I assume that the sensor needs to be replaced? Will check the condition of the plug on the ABS mod. Gives me an excuse to make & change the front brake pipes o joy, o bliss, o rapture.

Cheers for the sugestions.

Rover 75 Tourer · 13th October 2019, 21:36

Changed ABS sensor now W/light off but speedo fault still there. Will check plug on ABS unit tommorow. If I have to change Instrument pod is it a plug & play or does it need to be paired to car?

vitesse · 14th October 2019, 12:09

If after checking the ABS plug you find all is well, then if it's not the sensor in all probability it's the magnetic strip in the wheel bearing contaminated or worn.

Regards

4th October 2019, 19:07	#1
Rover 75 Tourer Avid contributor Rover 75 tourers(4)400turs(3 Join Date: Nov 2016 Location: Largs Posts: 216 Thanks: 3 Thanked 67 Times in 56 Posts	speedometer fault Speedo has started to rise slowly to 9/10 mph and no further and is slow to return to zero when car stops. Stripped hub and cleaned area on and around reluctor ring and abs sensor, no juddering at low brakeing speed to indicate abs fault any ideas where fault may lie

4th October 2019, 19:10	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,760 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Do an ipk test to rule out a faulty speedo.. __________________ Lest we forget..

4th October 2019, 19:21	#3
Rover 75 Tourer Avid contributor Rover 75 tourers(4)400turs(3 Join Date: Nov 2016 Location: Largs Posts: 216 Thanks: 3 Thanked 67 Times in 56 Posts	speedometer fault Can you run through how to do ipk test, cheers

4th October 2019, 19:25	#4
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,760 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Turn ign on Hold the trip reset button in until the display changes Press the button until you select 2.0 on the display the display will then change to 'on' 'off' When it says 'off' press the button again until the display reads 2.1 This will then test the ipk. __________________ Lest we forget..

4th October 2019, 20:22	#5
Rover 75 Tourer Avid contributor Rover 75 tourers(4)400turs(3 Join Date: Nov 2016 Location: Largs Posts: 216 Thanks: 3 Thanked 67 Times in 56 Posts	speedometer fault Thanks will do tommorow let you know result

5th October 2019, 12:29	#6
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	Dick, take a look at the plug on the ABS modulator, it's common to find the pins damaged or corroded........battery box out I'm afraid Brian

5th October 2019, 14:34	#7
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	As Brian said above check in the ABS ECU connector for corrosion. I had one yesterday that was badly corroded and was causing an intermittent Speedo Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

5th October 2019, 16:53	#8
Rover 75 Tourer Avid contributor Rover 75 tourers(4)400turs(3 Join Date: Nov 2016 Location: Largs Posts: 216 Thanks: 3 Thanked 67 Times in 56 Posts	speedometer fault Ran ipk test could only get to 2.0. However a test ran and showed all W/lights & fuel,temp,rev counter and speedo to be working. On going back to road test showed ABS light staying on and neither the speedo or mileage recorder working.Can I assume that the sensor needs to be replaced? Will check the condition of the plug on the ABS mod. Gives me an excuse to make & change the front brake pipes o joy, o bliss, o rapture. Cheers for the sugestions.

13th October 2019, 21:36	#9
Rover 75 Tourer Avid contributor Rover 75 tourers(4)400turs(3 Join Date: Nov 2016 Location: Largs Posts: 216 Thanks: 3 Thanked 67 Times in 56 Posts	speedometer fault Changed ABS sensor now W/light off but speedo fault still there. Will check plug on ABS unit tommorow. If I have to change Instrument pod is it a plug & play or does it need to be paired to car?

14th October 2019, 12:09	#10
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,528 Thanks: 395 Thanked 823 Times in 652 Posts	If after checking the ABS plug you find all is well, then if it's not the sensor in all probability it's the magnetic strip in the wheel bearing contaminated or worn. Regards

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