Engine misfires and cooling fan not switching off for about 7-10 minutes. Happens every six weeks approx.

2020 Vauxhall Grandland X 1.2 turbo
Car: Vauxhall Grandland X
Year: 2020
Variant: 1.2 turbo
Categories: Running Rough, Starting & Power Loss
ENGINE LOOSES POWER
When the engine starts to misfire it's always been hot or at least warm and the engine has been switched off a while; say 20 mins to 2 hours on average. The cooling fan seems to run on for too long but does switch off eventually. spark plugs have been changed, spark coils checked and compressions checked. Have just started then stopped a warm engine and the cooling fan comes on for no apparent reason and runs for a while. I am now wondering if the cooling system has a 'dodgy' thermostat and the scan tool is missing this? Could this cause the CPU to misinterpret a message and over-fuel the cylinders, causing the engine to jump about? (or am I just 'clutching at straws')?
Problem added: May 23, 2022 (1 year ago)
. Reminds me of the similar symptoms when a diesel engine DPF is regenerating
Answered May 23, 2022 (1 year ago)
Thanks for the reply but I have a petrol engine therefor no DPF involved.
Answered May 24, 2022 (1 year ago)
Replying to post by whittingehame:
. Reminds me of the similar symptoms when a diesel engine DPF is regenerating
Did you get the bottom of this my Grandland X is doing the exact same thing, The garage told me they had fixed it got round the corner same thing happened. Now they are saying they can’t fix it and to take it somewhere else. Refusing to refund me as well!
Answered Apr 2, 2024 (2 weeks ago)
Replying to post by David Coull:
Thanks for the reply but I have a petrol engine therefor no DPF involved.
Did you get the bottom of this my Grandland X is doing the exact same thing, The garage told me they had fixed it got round the corner same thing happened. Now they are saying they can’t fix it and to take it somewhere else. Refusing to refund me as well!
Answered Apr 2, 2024 (2 weeks ago) Edited on Apr 2, 2024 (2 weeks ago)
No up[date since posting May 23, 2022 (1 year ago)
Answered Apr 2, 2024 (2 weeks ago)

Post a reply

Helpful & Related Pages on AutoInsider

More problems with the 2020 model year Vauxhall Grandland X

We have 11 problems and solutions in our database for this model year of the car.

View all Vauxhall Grandland X Problems