1.9 tdi issue.

[CarlSl1.9]

About a month ago, I went to JabbaSport in Peterborough to get my Seat Leon 1.9 tdi remapped. After a few hours, the guy came to the conclusion that the turbo was surging and that there might be an issue with the EGR valve. Also there seems to be a fluttering noise coming from the engine? although that may be the dump valve, but it's quite a loud flutter?

But anyway, yesterday I had my service at Seat, and they said there was nothing wrong with the turbo.....

....so could it be anything else?

 

[sssstew]

firstly TDIs dont have dump valves so it wont be that.

To me it sounds like the N18 EGR control valve is faulty, i had this sort of surging or stuttering which you mention which was fixed with a new N18. Start by swapping the N75 and N18s and see what you get.

 

[strugers1]

when you say surging what do you mean by this??overboosting??

 

[CarlSl1.9]

when you say surging what do you mean by this??overboosting??

Well the guy from Jabbasport says it's like waving, boost, then no boost, then boost etc.... no consistant boost.

 

[strugers1]

thats like mine

 

[fenwick458]

this is what surge sounds like.

[EDIT: can't put the link in for some reason i'll do it later

what sort of turbo is on it that they are trying to map?

i would not describe surge as on boost, off boost, on boost......thats what mine's doing now and looks like a problem with the vnt or actuator

 

[sssstew]

so have you swapped the valves to test?

 

[CarlSl1.9]

so have you swapped the valves to test?

Not yet, need to find them first.

Also it's finding the time, I haven't had a day off since I started this thread.

 

[sssstew]

far back right on the firewall... small black and grey capped valves with the black vacuum hoses going into them.