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Model specific boards => Golf mk5 => Topic started by: Len on 09 March 2015, 13:27

Title: Low Boost Pressure
Post by: Len on 09 March 2015, 13:27

had an engine warning light and had it checked out an that's what came up (low boost)

Mate with code reader said it might be the variable turbo vanes sticking???

Has suggested a terraclean.

Ideas? Advice please

Title: Re: Low Boost Pressure
Post by: th3_f15t on 10 March 2015, 17:45

Terraclean will help the engine out due to the amount of oil that gets burnt onto the valves but whether it'll sort boost issues is another matter. Certainly cheaper than pulling the inlet off and investigating.

Title: Re: Low Boost Pressure
Post by: Len on 10 March 2015, 20:02

Yea what I was thinking! carbon deposits etc are inlet, but as the turbo is exhaust driven I assume they are there as well!

Could it be something more like the N75 valve?

Title: Re: Low Boost Pressure
Post by: Rhyso on 10 March 2015, 20:03

Split diverter valve??

Title: Re: Low Boost Pressure
Post by: Len on 12 March 2015, 20:06

Rhyso mate I know nothing about these cars yet! Please explain what and where this is

Title: Re: Low Boost Pressure
Post by: topher on 12 March 2015, 20:22

i'd take anything your mate with a code reader says with a pinch of salt if he thinks your petrol turbo has variable vanes. on a 200ps GTI the diverter valve is bolted to the turbo compressor housing with 3 5mm allen head bolts, very common for failing.

Title: Re: Low Boost Pressure
Post by: Len on 13 March 2015, 14:05

Thanks Topher

he did have an Audi that he blew the turbo after a remap! :grin:

Title: Re: Low Boost Pressure
Post by: Len on 13 March 2015, 14:07

He does work for Honda so maybe he confused it with vvt ??? lol