Turbo not working on long journeys

[BMcN]

When on a long, constant speed journey I find my turbo will stop kicking in. I can still hear it spinning, just not boosting. If i let the car cooldown and start it will be fine. Feels almost like the dump valve sticking so I will phone Forge for a service kit.

Was wondering if there is anything else to consider? Maybe N valve? (Or whatever one the Ibiza comes with as standard).

 

[claudefrog]

get yourself a boost gauge.. even if its only a temporary measure to see when it does it, and if you can get the car on vag-com at the same time it may help

 

[Russ_20vt]

Sounds similar to my recent journey..

http://www.seatcupra.net/forums/showthread.php?t=74861

This is the longest journey ive done in mine so far to, on the way back from cornwall i had no diagnostic light come up yet it still kept on kicking in and out of limp mode.

Ive since cleaned my maf, bought a new air filter and checked the dv for sticking/leaks. Yet to fully test the car.

Russ

 

[BMcN]

Can't get on VAGCOM till the nd of this month. Seems to happen everytime i get low on fuel and put more in.

Is the MAF the sensor just behind the air filter? I have a Dynatwist on that is probably a little overdue cleaning.

 

[Russ_20vt]

Yes the maf is behind the filter, you need special tork bits to remove it.

I cleaned my one up and all seems fine now. I have however just ordered all my vag-com bits.

 

[Colin]

This might seem like a daft one but what are you using to clean your MAF? I thought they were really delicate!!!

cheers

col

 

[Jonzy]

Isopropyl alcohol, IPA for short is what you need really. Evaporates very quickly.

 

[Colin]

Cheers,

Where do i get that from

Col.

 

[stoneyfordNI]

maplins , in a wee can , couple of quid

 

[BMcN]

Anything else I could use as a substitute? Alcoholic swaps?

 

[Jonzy]

doubt youd get a swab in the opening, worth a try though!

 

[BMcN]

Ok I have not connected up VAGCOM and here is the result:

VAG-COM Version: Release 311.2-N


Chassis Type: 6K - Seat Ibiza
Scan: 01,02,03,08,15,17,25,35,56

Address 01 -------------------------------------------------------
Controller: 6K0 906 032 AA
Component: 1.8L 20VT EU3 0002
Coding: 10500
Shop #: WSC 00000
2 Faults Found:
17536 - Fuel Trim: Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
Readiness: 0000 0000

Address 03 -------------------------------------------------------
Controller: 1J0 907 379 AF
Component: ASR 20 IE CAN 0001
Coding: 13404
Shop #: WSC 00000
No fault code found.

Address 08 -------------------------------------------------------
Controller: 6K0 959 291
Component: AUTOCLIMA-220 X03.03
No fault code found.

Skipping Address 15-Airbags

Address 17 -------------------------------------------------------
Controller: 6K0 920 901 D
Component: 6K-KOMBIINSTR. VDO V02
Coding: 00442
Shop #: WSC 00704
IMMO-IDENTNR: SEZ7Z0Y0826914
1 Fault Found:
01039 - Coolant Temperature Sensor (G2)
30-10 - Open or Short to B+ - Intermittent

Address 25 -------------------------------------------------------
Controller: Bitte Adress
Component: e 17 eingeben
No Faults Found
or DTCs not supported by controller
or a communication error ocurred

Address 56 -------------------------------------------------------
Controller: 6K0 035 186 C
Component: Radio GRO 1V32
Coding: 00401
Shop #: WSC 06402
No fault code found.

End -------------------------------------------------------

I am guessing that it is 17536 - Fuel Trim: Bank 1 (Mult): System too lean that is the problem, but what would cause this? Sound like the MAF? I have a dynatwist and it is a couple of thousand over due its service.

 

[Russ_20vt]

Hey mate,

Did you try logging your maf flow rates?

I got the exact same fault code on mine, the system to lean one. I logged my maf and i only got 120isgs which is low for my spec.

Check my fault codes here.

http://www.seatcupra.net/forums/showthread.php?t=76483

 

[Colin]

My readouts were exactly the same as yours - Iam all sorted now!

You need to change your Pre Cat Lambda sensor - This will sort the lean problem out. Bout £80 - Speak to dave at IMG.

18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent

I had this also but it has gone away since the other problems have been sorted.

01039 - Coolant Temperature Sensor (G2)
30-10 - Open or Short to B+ - Intermittent

Replace the sensor as this throws the car into limp mode. I replaced mine about a month ago.

Hope this helps

cheers

 

[DPJ]

Isopropyl alcohol, IPA for short is what you need really. Evaporates very quickly.

Where do you get it from-
Any Chemists - £5 -ish for 500ml.

My readouts were exactly the same as yours - Iam all sorted now!

.............................
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent

I had this also but it has gone away since the other problems have been sorted.

That one usually means your battery has been disconnected recently

 

[BMcN]

So I need to change the Pre Cat Lambda sensor, not the MAF?

And yes the battery was disconnected when resetting the ECU.

Colin, are you sure its the temerature sensor and not the lean error putting the car into limp?

 

[Colin]

Thats what i reckon mate - Like i said i had exactly the same code thrown up and the Lambda swap sorted it. What sort of MPG are you getting?

That explains the Voltage one then caus i kept disconnecting my batt.

It will be a mixture of both to be honest. I replaced my temp sendor before the Lamda had gone and it was going into limp mode. The sendor is defo gone though.

If youve got an ibiza then you will prob need this one 059 919 501A

 

[BMcN]

From what I can see on the Audi/Jetta forums I would get an additional error saying No activity from O2 sensor if the one you talk about was dead.

I'll see if i can reset the ECU and get a MAF reading.

 

[davidol]

im having the same problems! lol system too lean and fuel too low (pressure? as there was plenty of fuel in there), no induction kit just replacement panel filter and only boosting to 15psi max as apposed to 20-22ish it should make?

 

[Colin]

Hi,

You are probably right but rather than it being dead it is just faulty and sending incorrect values to the ECU.

I bet even though it says its lean its running rich and your geting low 20's in the MPG.

Wouldnt drive it for too long without sorting though mate.