running badly

[Nicksta]

Hi im new here and have had problems with my cupra since ive had it which is about 5/6 weeks, it doesnt run very well keeps holding back and losing power its very juddery and quite fierce.
Ive changed the N75 valve have had a couple of split hoses thought that would do it but tonight it started doing it again can anyone help PLEASE!!!

 

[hyphon12]

Have you ever had it hooked up to VAGCOM? A dodgy MAF could be the cause but that's just a guess for many possible reasons

 

[virdi]

Coulld be a number of things. Get it on VAGCOM.

Give it a good service, Change the spark plugs do a boost leak test.

Depending on where you are, someone on here should be able to help you.

 

[Seal_LCR]

Coil packs are most common. Did the EML come on when juddering?

 

[Nicksta]

Im in norfolk if there is anyone around here that could help that would be great. Whats VAGCOM??

 

[285cupra-matty]

Vag com is the Volkswagen Audi group diagnostic system should give you some indication to what's going on.

 

[Nicksta]

PLEASE HELP!!!!!

Ive had vag com on it every fault its come up with ive done but the bloody thing still isnt right!! so far ive spent quite a lot of money on it in a very short time and have chaged the N75 valve,coil packs half a dozen vacuum pipes,coolent temp sensor!
It holds back quite badly and sometims i cant even pull away properly and it wont tick over properly either almost like its hunting!!

Is there someone who can help me please i dont know what else to do..

 

[hyphon12]

You tried unplugging the MAF?

 

[Nicksta]

No what will that do

 

[ibizacupra]

PLEASE HELP!!!!!

Ive had vag com on it every fault its come up with ive done but the bloody thing still isnt right!! so far ive spent quite a lot of money on it in a very short time and have chaged the N75 valve,coil packs half a dozen vacuum pipes,coolent temp sensor!
It holds back quite badly and sometims i cant even pull away properly and it wont tick over properly either almost like its hunting!!

Is there someone who can help me please i dont know what else to do..

have you taken it to a specialist?
chances are the fault could be found and without you just throwing random parts on at your expence... (too late now for you, but instead of poke and hope parts, get it looked at.)

where in the country are you?

 

[RDS1972]

If you're in Norfolk, I can recommend AP Tuning in Lenwade. Gary, the owner runs a Time Attack car and is well versed in sorting big power turbos!

 

[Nicksta]

yeah im in Norfolk...any idea what he charges im starting to run outta cash,have you any contact details??

 

[RDS1972]

Www.ap-tuning.co.UK no idea of price, but they're nice guys, just call them.

 

[Matty1986]

Same with mine!! Have changed, coilpacks, spark plugs, N75, maf, coolant temp sensor, new 007p dump valve! Full service! No fault codes! Doing my tits in thinking about getting rid of it! Wouldn't care it's only done 41k!!

 

[johnf949]

Mine doing the same lcr. Did you mange to get it sorted ?

 

[Matty1986]

Been told today it's the actuator! Weak/sticking! So going to change it and see how it goes!

 

[dandanibiza]

Was it the actuator in the end?

I've got the same symptoms. Boost is erratic, even when driving slowly in 1st and 2nd gear, it sounds like there is a massive build of vacuum pressure and then it'll get dumped and the car will jurk big time.

It also stutters when I floor it, 3rd, 4th and 5th.

I got quite a few codes come up when I checked it with a vag-com included map sensor faulty, maf sensor faulty, coolant temp sensor, n249 issue which I have now bypassed.

Havn't changed any sensors yet as I want to figure out what's going on, driving me nuts as I can't drive it normally, have to go proper slow in 1st and 2nd otherwise itll just build up pressure and then dump it for no reason.

Only thing I've got on the car is turbo back exhaust with decat and a cupra intercooler.

Cheers,

Danny

 

[Matty1986]

Got the forge actuator delivered on Saturday, just waiting for someone to fit it and set it up for me. Will keep you posted when I get it done

 

[Mattyboy1]

This is like what mines doing let me know how you get on.

 

[Matty1986]

Getting fitted next week so will let u guys know