Supercharger problem

[pologti18t]

Could be fuel, I experience that problem from time to time on the Subaru, if I run the tank too low and sludge gets into the system it can take a new tank to clean it out and a long highway run. or I go get some Fuel line cleaner and dump it in the tank.. sorts it quick smart.. my 2 cents anyway ( yes I run 98 as well)

That makes no sense... the feed for the fuel tank is at the bottom of the tank. It's always going to pick up "sludge" whether the tank is full or close to empty.

[SilvrFoxX]

Well whatever I have had bad fuel 4 -5 times and it clears after doing what I said.. debate it if you wish

[robmyster21]

OP,

I'm having the exact problems with my 118TSI Golf. I found that on a hot day, combined with a low fuel tank the supercharger would not and will not engage. Which leaves you with no boost to the engine and a slow crawl to 3500 rpm (turbo time). I believe this is a serious issue that volkswagon needs to look at. As this effect of no boost would be considered pinging (labouring the engine). As it would be dumping alot of fuel into the cyclinders, thinking a large quantity of compressed air is going to mix, which it isn't.

I have taking it into volkswagon and told them about the loss of boost. They had a look and told me it had the wrong ECU code and that they have updated it and everything should be fine. But the problem is still there.

So I'm very worried about this issue I'm having and was wondering did you actually fix the problem and if so how to did you come to a solution.

Cheers.

[buzuki]

Supercharger clutches are pretty common to be replaced. robmyster, no need to worry bout excess fuel being dumped in, the car knows there is no boost so will fuel accordingly

[triode12]

No Boost from the supercharger could also be caused by a faulty PCV or DV.
That was the problem in my case with my GT, the PCV failed and the supercharger wasn't able to produce boost. The PCV and DV in the Golf are common points of failure. The Dealer replaced both the PCV and DV to be sure.

As logger has mentioned, the only way to be sure is to VAGCOM it.

[buzuki]

could also be the regulating flap, its at the top near firewall, it controls the blend between supercharger and turbo, if it stays open you will have no supercharger boost

[SLA14h]

Yes I still have this problem intermitantly the dealer has not been able to identify what is going on.
The reason I am looking at this is because we have had some hot days lately and the problem has returned in the afternoon on the way home.
No power until 3500 when the turbo comes on.