Quote:
Originally Posted by refgenius15
Hey. I agree it is the turbo. My Dad's Vito turbo diesel had a problem with the turbo once due to the wastegate being blocked. The wastegate is where the air flows through the turbo and as you can imagine if it becomes blocked, its not good. Because the Merc has an advanced engine management programme it cut the engine so no further damage would occur to the engine but same symptoms as you described, loss of power speed etc.
The problem is with Diesels people think "oh theyre great for fuel economy" and never drive them that fast or accelerated. But seriously if u don't use the turbo regularly, i.e. drive the thing and give it a good right boot every now and then it will affect performance and leads to blockage of wastegate as the valves on it are not opening regulaly. Id put a good bet on that being a problem and I know it is a Vito not a Civic but turbo diesels seem to have common problems. Was the mileage high from previous owner? Hope this helps and good luck
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The turbochargers used on all honda diesel engines DO NOT UTILISE A WASTEGATE they all use varible vane geometry to control boost pressure,the fault on your car is due to incorrect clearence between the turbine vanes & its casing which get clogged up with sooty deposits & stops it working correctly, once the ecu detects a fault in boost pressure it puts the car into limp home mode until the fault is repaired.
