[sneeky]

Had the compressor go on the Mrs WQ Fiesta with about 40k km, expensive and annoying but what was worse was that for the last year the Fiesta has had an intermittent but consistently getting worse issue where it wouldn't start, constant stalling after start, but once driving never failed, ran perfectly.

Has been to various mechanics, including Ford who could replicate the issue, many parts replaced by default, but because it never threw a code couldn't pinpoint the fault.

Anyway, I put two and two together, took a punt and bought a second hand throttle body, fitted the part myself, fixed the problem. So if anyone has weird starting issues that can't be resolved on the Fiesta, think about the throttle body.