Vauxhall Tigra 2009 vauxhall tigra twin port keeps losing power

If the management light is on there should be a stored fault code that can be retrieved with Tech 2/3 diagnostic scanner or similar rather than guess and replace parts that may not have been needed or guessing

Thanks for your reply , the only fault that was showing was the throttle pedal & he changed it but still doing the same . .The mechanic thinks it’s a false signal . Seems to have mechanics scratching their heads but surely there must be an answer

May be his scanner is not capable of scanning all Vauxhall modules / circuits . Is there an inline fuel filter on that car , have they checked for a partially blocked exhaust or cat convertor

Thanks for your reply , I will speak with the mechanic and ask this question, thanks again for helping