Engine loses power and unresponsive when the engine is hot

2008 Vauxhall Astra Z16XER 1.6 VVT 115hp Petrol Life
Car: Vauxhall Astra
Year: 2008
Variant: Z16XER 1.6 VVT 115hp Petrol Life
Categories: Running Rough, Starting & Power Loss
The runs and performs very well. has power and acceleration when driven from cold ,- but when the engine is hot 15 -20 miles miles running. There is a lack of acceleration and uphill puling power.
I have checked for OBD11 fault codes, none are listed.
All engine servicing is kept up to date.
Advice would be appreciated MJC.
Problem added: Sep 7, 2021 (2 years ago)
Could try changing engine coolant temp sensor , fuel filter . You need a scanner that is at least Tech 2/3 compliant as a lot of run of the mill scanners to not cover a lot of functions / modules
Answered Sep 7, 2021 (2 years ago)
whittingeham.
Thanks for you interest in the problem.
MJC
Answered Sep 8, 2021 (2 years ago)

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