Help with turbos?!?!

n1ff · May 1, 2011

Hello everyone, I have been reading posts for quite a while now but as time has now become precious I would be grateful for some urgent help!!

I drive a Leon Cupra T, I've put a pipecross panel filter, Forge dv, Milltek cat-back, and a Revo remap on it. I'm already booked in to get my car fixed on thursday to get a thermostat problem fixed but as is my luck these days last night I broke down!!

The breakdown guy diagnosed it and it came up with no errors logged and (as I feared) told me that it would have to be turbo related. I'm going to get my car looked at by a friend on Tues but as im booked in on thursday already I was wondering if worst came to the worst I could replace my entire turbo with a Cupra R turbo?!?!

PLEASE HELP!! and thank you very much!

MJ · May 1, 2011

What's up with the stat? Coolant not circulating?

Also us the turbo cutting out?

n1ff · May 1, 2011

EEEEYYY! thanks for the reply dude!!!

Basically my engine is constantly running cold so I was told that it might be my car is constantly running on "safe mode" because it can't detect how hot my engine is?!?!! hence y i think the stat is bein replaced.

The problem with a turbo sounds completely uneventful, no explosions or any thing (bit dissapointed).

I was just driving along, loss of power, engine light came on, engine felt like it was rotating unevenly and a low hoarse growl. And after I left it for a while it would idle fine, but if i revved it then the problem started again.

MJ · May 1, 2011

I'd try a coolant temp sensor first. This can be checked in 17 - dash panel and often logs a fault in there as oppose to the engine.

Have you felt the top and bottom hoses in the engine bay? Or are you just going off the gauge?

n1ff · May 1, 2011

Just going off the gauge mate, I've also tried blowing hot air through as well and that seems to be coming through cold. and also there were no errors logged, I'm booked in on thursday to get it checked out any way mate, I just need to be prepared turbo-wise incase I need to buy a new turbo and get it delivered before thursday I thought I might as well try and upgrade instead of replace.

MJ · May 1, 2011

It could be going into limp mode due to incorrect temp readings. A failed temp sensor will read 0 all the time.

n1ff · May 1, 2011

Really? wow thats cool so the turbo might be fine and i can go on upgrading! cheers mate! the only thing is that my temp gauge has been getting progressively worse over about a month so I can't see why it would all of a sudden die on me instead of starting to limp out progressively with the stat?

MJ · May 1, 2011

The thermo resistor in the sensor gradually fails and eventually gives no reading. Better to go down the £15-20 route than dive in and fit a £500 turbo.

n1ff · May 1, 2011

Excellent man nice one!!!! but just incase, can a cupra r turbo be fitted to a cupra t?!

MJ · May 1, 2011

I think the cupra has a ko3 and the R has a ko4 not personally sure if they are interchangeable.

n1ff · May 1, 2011

Yea I heard about being able to get a ko3 and making a kind of hybrid ko4 turbo but presumed I would need a working ko3 turbo to start with, didn't know people made the full hybrid turbo thanks!

lj03 · May 1, 2011

just a thought but sounds like thermostat sticking then engines going into safe mode and cutting itself out :shrug:

lj03 · May 1, 2011

n1ff said:
Yea I heard about being able to get a ko3 and making a kind of hybrid ko4 turbo but presumed I would need a working ko3 turbo to start with, didn't know people made the full hybrid turbo thanks!

ive got k03 hybrid turbo you need the manifold too, got mine from jbs as oem and others are prone to cracking.

n1ff · May 1, 2011

lj03 said:
ive got k03 hybrid turbo you need the manifold too, got mine from jbs as oem and others are prone to cracking.

Hi mate cheers for the reply.

Just to show my newbiness, by manifold do you means the downpipe?!?

lj03 · May 1, 2011

n1ff said:
Hi mate cheers for the reply.

Just to show my newbiness, by manifold do you means the downpipe?!?

sort of you would need larger downpipe for better bhp but i mean manifold as in what turbo and exhaust join to at rear of engine mines a 18t 20v so same as you.

n1ff · May 1, 2011

nice one mate!!! lovin the white wheels btw

lj03 · May 1, 2011

n1ff said:
nice one mate!!! lovin the white wheels btw

thanks mate.got stage 3 revo map,genesis 550injectors,forge dv,forge fmic,audi a3 actuator wiv blue spring,kso3 hybrid,jbs cast mani,full milltek wiv milltek sports cat,forge quick shift,10k hids,full brembo brake upgrade plus drilled disks and braided lines.360bhp

offitmassive · May 1, 2011

IIRC the coolant temp sensor is for ecu readings, the temp gauge is driven by the sensor in the expansion bottle, make sure it has a green base and a new o ring

Phoenix27 · May 1, 2011

n1ff said:
I was just driving along, loss of power, engine light came on, engine felt like it was rotating unevenly and a low hoarse growl. And after I left it for a while it would idle fine, but if i revved it then the problem started again.

Just as a matter of course... this sounds a bit like a coilpack failure... have you checked this?

lj03 · May 1, 2011

hi there having trouble with boost!!! checked all hoses for boost leaks and nothing :shrug:

replaced all coil packs and plugs today took it for a spin still not boost correctly. have liquid gauge used to boost to 1500 on this now only going beetween 500 and 800 :shrug:

in boost gauge has display saying boost pressure this used to say 0 when idleing,now when idleing says -100mbar when driving goes up to -900mbar :shrug:

got home turned engine off. turned boost gauge on showed i was boosting at 1280 but engine was off :shrug:

turned on and off couple of times pixles went bit weird now and again

can anybody help with this

if liquid gauge is not functioning properly would this affect car boosting :shrug:

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Help with turbos?!?!

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