Thread: Auto Gearbox vibration

If it's a v8 then it may need some new plugs, leads , and/or coils.
If a TD5 , may have oil in the loom.
Please advise more details.
Regards Philip A

Hi Philip,


Thanks for your reply.
Forgot to say it`s a td5.
I put a new injector harness on about 6 months ago and checked it to be still dry at the ECU.


Thanks CharlieChap

If you have nanocom, check cylinder balances in gear , go from there

How does it behave in normal driving? Changing? Rough? slow? Unless there are some other gearbox symptoms it is unlikely to be gearbox, could be wrong. Could be a fueling related prob, showing up when the box is loading it. Check filters, air ,fuel, recheck the loom, check the fpr.

Hi Schuy 1


Thanks for your post.
The auto sounds slightly rough between 1st & 2nd gear when cold but runs pretty normal when hot.


Checked everything you suggested, all ok, but not sure what you mean by fpr?


Thanks CharlieChap

FPR = fuel pressure regulator
When you say no faults logged does that mean you have diagnostic equipment , if so check cylinder balances as this sounds like engine related, is it definitely when stopped or when coming to a stop? Td5's can hunt when on slight over run , no accelerator as the ecu cuts fuelling .

Air con compressor cycling in/out?

Originally Posted by discorevy

FPR = fuel pressure regulator
When you say no faults logged does that mean you have diagnostic equipment , if so check cylinder balances as this sounds like engine related, is it definitely when stopped or when coming to a stop? Td5's can hunt when on slight over run , no accelerator as the ecu cuts fuelling .

I do have an old Nanocom 1. I have checked cylinder balances and are all low figures and not much variation between them.
The hunting or vibration is when I`m stopped and in drive but if I put it in neutral the hunting stops.[ AUTO]


Thanks CharlieChap