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Hello All,
Firstly let me apologise in advance for posting about this topic. I know it's been done to death. The only reason I'm posting on here is because in my eyes you guys are the real experts and not the Money grabers at VX. I started with the EML coming on about 2 weeks ago. Took it to a local independant garage informed me it was showing codes for the MAF sensor, so I reluctantly purchased a new one at the cost of £130. I say reluctantly as I never trust these diagnostic machines as the just seem to move from one thing to another. Back to the problem anyway. So new MAF fitted, and everything going well, well for 2 days anyway. All of a sudden the EML is back on and I'm now scratching my head. I've seen quite alot about the EGR valve clogging up so I've decided that this could be my next port of call. Could anyone please tell me where I'll find this and the best way to clean it. Once again sorry for posting about this but it's driving me mad.

Thanks for any help you can provide.

Cheers.
 

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A.O.N - Approved Vauxhall Specialist (Anthony)
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5,025 Posts
There is nothing wrong with the diagnostic machines - it is the nut operating it that you should be wary of!

The DTi engines are notorious for having problems with the vacuum control system that operates the boost control and swirl flaps. The whole system needs to be checked for leaks, as well as making sure that the vacuum pump is doing its job properly, as a small leak on one of these can throw up fault codes that don't seem to bear any relation to the actual fault when it is found.

First off, try the pedal test or get the codes read again and post them back here - it may be a co-incidence that you now have a completely different fault code stored.
 
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