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My 2.0 Cabriolet has a severe intermitant hesitation under load between 2-3000 rpm, also the revs sometimes drop to 500 at tickover. The coil pack, plugs and idle valve have all been replaced but to no avail. Any ideas?
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Has the ECU's fault code memory been interrogated for stored faults?
This is where I would start looking, although its not easy for DIYers...
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No it hasn't, does the engine management flash/light when a fault is logged because it hasn't.
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