hello i was wondering if anyone can help i drive a diesel 2000 X reg 2.0 16v di vauxhall astra it has done 130,000 it has been great so far but a orange emission light come on at around 50mph it goes very sluggish and i have found it only revs up to 4K not 6K i took it to vaxhall they charged me £100 for diagnostics and told me it was the air flow sensor so i bright one changed it for another £100 i changed it and then the light always stayed, vaxhall told me they would have to do further diagnostics at another £100 so i told them where to go and went to another garage he diagnosed it it came with 2 faults the vacum pump which i replaced and the boost pressusolenoidoid valve which i replaced but it still comes on after putting it on the diagnostics again the boost pressusolenoidoid valve still was the error shall i replace the part or could it be anything else?? help please?
my answer is try to check it out first on auto repair shop..
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