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Old 02-10-2008   #1
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Fiat Multipla JTD problem with overboost valve! please help

We hav a Fiat Multipla JTD 52 plate. The cylinder head gasket was changed in May , since then the engine warning lamp has been coming on with code P0236 over boost valve pressure. There are no intake or exhaust gas leaks. MAF sensor has been changed, and the overboost valve sensor has been changed, however the fault still keeps reoccuring. Now seriously fed up as car is running in limp home mode. Can anyone help us? The garage has no idea what else could be causing the problem.
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Old 03-10-2008   #2
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Re: Fiat Multipla JTD problem with overboost valve! please help

ah the good old p0236 code. its usually a sooty EGR valve, or a sticking/dead EGR valve. a good clean (including the piework) is usually all it takes to sort it.

ignore your dealer when they try to say the turbo needs replacing. that is their standard response and it never works.
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Old 03-10-2008   #3
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Re: Fiat Multipla JTD problem with overboost valve! please help

Thanks for your help!Will pass information on .
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