Leon Cupra AUQ loss of power/boost eml on

[Frosty18t]

Hi Guys

Leon Cupra AUQ engine code engine management light on loss of power, turn engine over drives fine for so long then no boost turn engine off then start again does the same fine for so long then no boost unplug maf sensor drives with no issues. Tried a brand new genuine maf but was different serial number to what VW and euro state should be fitted no improvement same symptoms when maf is plugged in unplug maf drives fine.

Ideas

 

[Frosty18t]

UPDATE

Car has problem with MAF unplugged aswell as not boosts fine all the way to redline in 1st, 2nd and 3rd boosts fine in 4th but if you let off the throttle and then go back on the throttle there a drop in power, it is still boosting slightly as you can hear divertor valve going off when you let off, faulty resets if you knock engine off and back on?

 

[Alexis27]

Get a cheap code reader off eBay. Without a code it could be literally anything

 

[Frosty18t]

Get a cheap code reader off eBay. Without a code it could be literally anything

Code on VAG-COM is 17705 - pressure drop between turbo and throttle valve (check DV!!)

Checked another forum and they suggested a throttle body clean and realignment or a new n75 valve.

 

[Bigjohn84]

I was actually going to say N75 this morning, I think that's ur best bet, mind get one with the same letter at the end of the number on the valve, also clean the TB

 

[Frosty18t]

I was actually going to say N75 this morning, I think that's ur best bet, mind get one with the same letter at the end of the number on the valve, also clean the TB

Going to do a clean and realignment soon if that doesn't work getting a n75 valve tomorrow of someone breaking a AUQ Leon Cupra.

 

[Bigjohn84]

Just make sure the N75 is the same one