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on my car (meriva 1.3cdti) if the clutch is down in neutral, the engine will only rev to 3k rpm.... so... switch hidden somewhere that when operated bypasses the clutch position sensor and makes it think it's down... you operate the switch just before you get out the car at the mot station....
of course if clutch position sensor faulty throws up the engine management light as well as a DTC when the car is driven about the garage for the various tests, it'll fail for that instead,
maybe a remote operated switch then... you stand watching the test, and when it's smoke test time you press the remote in your pocket that halves the revs,
of course if clutch position sensor faulty throws up the engine management light as well as a DTC when the car is driven about the garage for the various tests, it'll fail for that instead,
maybe a remote operated switch then... you stand watching the test, and when it's smoke test time you press the remote in your pocket that halves the revs,