Belts changed - PO 340 Warning Light on

Yorkshire GOC · 11th July 2022, 16:31

Just had belts, pump and tensioner changed - warning light on - error code PO 340 - Camshaft Position Sensor A circuit

So we are looking at a faulty cam sensor / wiring fault , faulty crank sensor but in view of the recent belt change the following listed cause for this code has grabbed my attention

Stretched or misaligned timing components

Booked back into the garage to look at the belts. They are confident the belt has been aligned correctly.

dave lincs · 11th July 2022, 20:26

Sounds like belt a tooth out, if was OK before and not now sounds like something they have done wrong

Yorkshire GOC · 13th July 2022, 17:16

Yep Dave - that the consensus of the various sites - if the cam wiring looks OK then it will be out by a tooth - the garage reckons they measured up correctly but i have asked the boss to give the belts the once over. Saying that she runs fine and the idle is OK.

dave lincs · 13th July 2022, 18:18

Bring it over if you want Martin I can soon check it for you

TourerSteve · 13th July 2022, 20:39

Quote:

Originally Posted by Yorkshire GOC

Yep Dave - that the consensus of the various sites - if the cam wiring looks OK then it will be out by a tooth - the garage reckons they measured up correctly but i have asked the boss to give the belts the once over. Saying that she runs fine and the idle is OK.

Even with the timing tool , some engines can still end up a tooth out

On One of our 1.8's we actually fit the belt a tooth out and once the engine is rotated by hand a couple of revolutions it aligns correctly Put the belt on with timing marks aligned it ends up a tooth out after a couple of revolutions

One of the reasons you should always rotate the engine by hand to check alignments
Not a hard job to check on a 1.8

Yorkshire GOC · 13th July 2022, 21:19

Quote:

Originally Posted by dave lincs

Bring it over if you want Martin I can soon check it for you

Thanks Dave - as they did the belts once before I will let them have a look - if no joy i will be in contact to take up your kind offer. Cheers Martin

trikey · 14th July 2022, 09:51

A tooth out won't throw a light up Martin, you might need to plug in and clear the fault as I have had this happen when timing a 1.8 T4 cleared the issue.

Sent from my SM-G780G using Tapatalk

Yorkshire GOC · 14th July 2022, 19:07

Cheers mate - the garage said the same as well.

11th July 2022, 16:31	#1
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,062 Thanks: 1,842 Thanked 623 Times in 469 Posts	Belts changed - PO 340 Warning Light on Just had belts, pump and tensioner changed - warning light on - error code PO 340 - Camshaft Position Sensor A circuit So we are looking at a faulty cam sensor / wiring fault , faulty crank sensor but in view of the recent belt change the following listed cause for this code has grabbed my attention Stretched or misaligned timing components Booked back into the garage to look at the belts. They are confident the belt has been aligned correctly. __________________ 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.

13th July 2022, 17:16	#3
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,062 Thanks: 1,842 Thanked 623 Times in 469 Posts	Yep Dave - that the consensus of the various sites - if the cam wiring looks OK then it will be out by a tooth - the garage reckons they measured up correctly but i have asked the boss to give the belts the once over. Saying that she runs fine and the idle is OK. __________________ 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.

14th July 2022, 09:51	#7
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,762 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	A tooth out won't throw a light up Martin, you might need to plug in and clear the fault as I have had this happen when timing a 1.8 T4 cleared the issue. Sent from my SM-G780G using Tapatalk __________________ Lest we forget..

14th July 2022, 19:07	#8
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,062 Thanks: 1,842 Thanked 623 Times in 469 Posts	Cheers mate - the garage said the same as well. __________________ 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.

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11th July 2022, 20:26	#2
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,409 Thanks: 380 Thanked 986 Times in 476 Posts	Sounds like belt a tooth out, if was OK before and not now sounds like something they have done wrong

13th July 2022, 18:18	#4
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,409 Thanks: 380 Thanked 986 Times in 476 Posts	Bring it over if you want Martin I can soon check it for you