Engine glitch on Hyundai i30

The engine on my Hyundai i30 diesel has started going into a limiter mode and will stick at 40mph. It is only rectified by stopping and restarting. No warning lights show and I can only fix the issue by stopping and restarting the engine. The main dealer says he can do diagnostic at £45, but may not find a reason as no warning appears. Any ideas?

Asked on 7 November 2013 by ronmg

Answered by Honest John
The first thing I would do is switch to Shell V-Power Nitro Plus. The additives in this 'superfuel' can sometimes fix problems like this, particularly if they are caused by hydrocarbon deposits.

Otherwise, read our engine malfunction section: www.honestjohn.co.uk/faq/unexplained-engine-malfun.../
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