Tractor syndrome - MG-Rover.org Forums
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post #1 of 7 (permalink) Old 05-09-2016, 02:39 Thread Starter
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Tractor syndrome

Hi,


Over my couple of years of reading the posts here I've often read about tractor syndrome. After hearing my son move my car the other day I have become concerned that the loud metallic clack might be my 45 developing tractor syndrome.


The problem is I don't really know how loud it's supposed to be. I've listened to clips on youtube and some L-series cars seem a lot quieter and some seem about the same as mine.


I downloaded a free decibel meter app and measured my car on cold and warm tickover. It's about 85-90 decibels cold and a few decibels quieter after a run. Does anyone know how loud a healthy L-series should be? How about one with tractor syndrome?


Strange one I know but thought someone might be able to help.


Cheers, Jeremy.
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post #2 of 7 (permalink) Old 05-09-2016, 06:35
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its a very subjective thing, but as a general rule I tend to say if you think you've got it then you haven't.

basically IME it's so knocky you will know, could always post a video up i guess if you wanted members opinions but wouldn't be a solid diagnosis



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post #3 of 7 (permalink) Old 05-09-2016, 21:03
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If you are old enough to remember the noise that old transit vans used to make on a frozen morning then if it doesn't sound that bad then all is normal!.
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post #4 of 7 (permalink) Old 06-09-2016, 18:17 Thread Starter
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its a very subjective thing, but as a general rule I tend to say if you think you've got it then you haven't.

basically IME it's so knocky you will know, could always post a video up i guess if you wanted members opinions but wouldn't be a solid diagnosis
If you think you've got it you probably haven't make a lot of sense Kris.

I was probably a bit sensitive to the girl after a long night shift. Still pull like a train.
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post #5 of 7 (permalink) Old 06-09-2016, 18:19 Thread Starter
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If you are old enough to remember the noise that old transit vans used to make on a frozen morning then if it doesn't sound that bad then all is normal!.
Thanks E_T_V, I definitely do remember the old transits on a winter morning.

It's not that bad!
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post #6 of 7 (permalink) Old 08-09-2016, 19:35
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VP 30 pumps arn't that bad in my experience. I had one fail on my V reg at 185k, have 194k on my 53 plate and no failure as yet and 127k on my 45 as yet no failure. I once heard a 45 which I think must have had tractor syndrome and it is a scary and uncomfortable noise to say the least when the car accelerated. The 3 L series I have all give a metallic knock, the 45 is worse than my 25s and sometimes is a bit uneven on idle, but it has not failed yet and it has been that way for the 30k I have owned it.
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post #7 of 7 (permalink) Old 09-09-2016, 13:22 Thread Starter
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VP 30 pumps arn't that bad in my experience. I had one fail on my V reg at 185k, have 194k on my 53 plate and no failure as yet and 127k on my 45 as yet no failure. I once heard a 45 which I think must have had tractor syndrome and it is a scary and uncomfortable noise to say the least when the car accelerated. The 3 L series I have all give a metallic knock, the 45 is worse than my 25s and sometimes is a bit uneven on idle, but it has not failed yet and it has been that way for the 30k I have owned it.
Cheers Bunny_Brain that's reassuring.

I get that occasional uneven idle as well, and it does make the metallic knock louder, maybe it was that I was hearing. I know quite a few on here experience the same thing but as yet no-one knows what causes it.

Mine is 'reset' by turning off and on again and doesn't trigger a fault code. Happens once every six weeks or so,
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