Insignia 2.0 CDTi 163 limp mode stuck at 40mph?

[Lee-CDTi 160]

Hi everyone

Yesterday I drove around 3 hours to Bristol and back from London with no issue until I was about 40 minutes from home on a residential road and put my foot down in second to drive around someone. It was fairly spirited driving but in any case as the revs hit a level I cannot remember power seemed to go and it would not go above 40mph. There was no turbo I am sure of that and it flashed service soon.

I was actually a few minutes from my Grandad so thought I would pop in and say hello, after 45 minutes I got back in the car and started it up and all was back to normal. I never need to go above 3000 revs at any point in this car with the power it has so I am not sure if it flicked up above this level and cut out and whether it would do it again but I didn't want to test it, I had about 30 minutes on the A3 to get home so 40mph would have been awful.

I wondered if anyone had ideas? I have done a number of long motorway journeys in the past month so from my basic knowledge of the DPF I would hope that gets regularly regenerated by the car...

Thank you in advance.

Lee

[Nick_H]

Does sound like a diagnostic session is in order - regeneration won't affect the max speed of the vehicle, aside increase in fuel consumption/possible slight smell the process occurs in the background. 'Service vehicle soon' indicates a non emissions related engine management fault also.

[0011728]

I would put money on there being a split in the intercooler hose. get this checked out asap as this will affect DPF regens and result in the DPF becoming clogged.

[exclusiv.]

as above,get the hoses checked out,sometimes the split is very small,and hard to find

[Lee-CDTi 160]

I would put money on there being a split in the intercooler hose. get this checked out asap as this will affect DPF regens and result in the DPF becoming clogged.

Thank you all for the quick responses, I will try and get to a garage this weekend.

Are these splits an expensive fix at a garage if they prove to be the issue? Also, how straight forward are they to find if I suggest this to a mechanic?

[0011728]

https://www.ebay.co.uk/itm/VAUXHALL-INSIGNIA-2-0-CDTI-DIESEL-INTERCOOLER-TURBO-HOSE-PIPE-13242121-2008/272990565337?hash=item3f8f8173d9:g:ZQYAAOSwdnZaTQy3

[Lee-CDTi 160]

Thank you, will order one and see if I feel up to changing it myself. Need to identify it later when I check under the bonnet.

If it is an easy changeover then I will do it myself and check the hose afterwards.

[0011728]

https://www.youtube.com/watch?v=CINAcP44Cdc&t=762s

[Lee-CDTi 160]

Just a quick update, I know this probably doesn't rule out the hose and I will try to replace it or at least remove and inspect it.

I put my hand in and felt all around the pipe while fitted to see if my hand would come out with any oil on it or felt a break in the pipe. I revved the engine a bit to try again and no sign of oil leaking, probably is a crack I just can't feel.