Thread: Limp Mode ????
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Old 05-28-2013, 12:00 AM
big bob big bob is offline
Join Date: Jun 2006
Location: UK
Posts: 698
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I suggest spending thousands on repairing parts that people guess might be wrong, rather than buying a code reader and checking the fault. Remember a diesel needs a special code reader.

As for the DPF, it's part of the exhaust, similar to the catalytic convertor on a petrol. Some companies offer a replacement where the DPF is removed and the engine software adjusted to prevent warning lights etc. You need to make sure it will get through an MOT.

You could also clean the EGR valve, which I would do first.

You could look into the fuel filter.

I don't know a huge amount about diesels but I do know that you start with the cheapest fixes first.

Blocked or sticking valves or filters may not show up on a code reader since sensors may not be monitoring them for marginal performance.
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