I have a similar problem that started yesterday, perfect one second then running like a sweaty sock the next, violently shuddering revs low then high and the exhaust getting extremely hot felt through the floor in the back, and keeps konking out,also if I turn to much that turns off engine.
Help needed please
Marc (2004 Kangoo Auto 1.6 Brisbane Australia)
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Try fixfault.com to fix vans.