Error code

[Boiskhon]

I have P1128,P1130 bank one and bank two are too lean and P0302 cylinder number two misfire does anyone have a solution.Full tune up has been done air filter changed.Engine is 2.7t and it only has 70km I checked the spark plugs but they are dry and clean.If you have expereinced anything like that and you kow what it is please let me know.Thanks a lot.

[Ecmbuster]

1. Too much ethanol in the fuel
2. MAF sensor reading far too low. That requires a VAG tool with before and after data captures with a known good part.
3. Vacuum leaks, smoke test the system.

[Ecmbuster]

This image should explain it.

[K04-S4]

Check the BPV's. Is the last alpha character of the P/N showing original 710A's or 710B's ?

Both my original 710A's had torn diaphrams by 47K KMs. When needed, suggest a pair of 710N's.

[Boiskhon]

Quote:

Originally Posted by Boiskhon

I have P1128,P1130 bank one and bank two are too lean and P0302 cylinder number two misfire does anyone have a solution.Full tune up has been done air filter changed.Engine is 2.7t and it only has 70km I checked the spark plugs but they are dry and clean.If you have expereinced anything like that and you kow what it is please let me know.Thanks a lot.

So basically you guys suggest that i dont put 94 octane in the gas tank because it does have 10 percent more ethanol than regular,but at the same time are not the turbo cars suppose to use high octane?Please explain what is the VAG Tool and where can I check it,thanks a lot.

[Ecmbuster]

Premium fuel is what's supposed to be burning in that engine. Fuel related issues are generally the last item while diagnosing a lean code.

A VAG (Volkswagen AG) or (Volkswagen Corporation) tool is a standard interface to diagnose VW, Audi, Skoda, Seat, Bentley and soon, the Porsche.

Most common is the VCDS from Ross-Tech. It's a laptop based scan tool equal if not better than a factory scan tool. PM me if interested.

[Boiskhon]

So I went to racing greed today,they checked the vacum leak,MAF sensor cleaned and it seemed to be fine but still no power,then they suggest checking Boost pressure and its the most surprising thing NO BOOST at all so now I am thinking this is going to be expensive!Is there anyway I can check it myself or could it be something else wrong rather then turbos itself.Thank you.By the way we colud not scan it the MAF with VAG tool they scan it thru OBD 2 system.

[K04-S4]

Ross Tech's VAG-COM can scan for MAF codes and monitor real time g/s airflow thru the rev range.

No Boost = Possible boost leak including failed BPV's. Have you tested or replaced BPV's?

Build your own 2.7T intake pressure tester for ~$20 to find leaks. 10psi is usually plenty to hear a leak... do not use unregulated compressor line pressure!

http://www.awe-tuning.com/media/pdf/...ure_tester.pdf

[Boiskhon]

We did the Boost leak check and it was holding the air fine,no whistling or apparent air leak.Its just so unusual not to have any boost,the gauge arrow wasnt even moving.Today I drove the car from work and I decided to see if the Intercooler and pipings were hot or warm,but instead they were cold to touch.Do you guys think that turbos failed or wastegate actuator stuck,could it be Diverter valve.I am going to check the turbos on tuesday and we will see whats going on.How much is to change both turbos and is there anyway not to take out the engine from the bay.I appreciate your input guys thanks.

[Ecmbuster]

Use a VAG 1687 charge air system tester or similar.
.3 bar = 4.35 pounds per square inch
Use soapy water instead of the other method. Listening for air escaping was likely caused by too much pressure and may damage parts. Test the inter-cooler, clamps, hoses, including any change over valve (electric over vacuum).

Use VCDS and measure boost at blocks 110 to 119.

Turbos require engine removal.