Hello all, my octavia clha only hot no fix on idle rpm (variation , jump) , after remove engine decorative cap , driving and no problem . Maybe whit decorative engine cap wery hot engine and fuel . Problem : Engine off in hot engine 90.c After 40 minutes start engine again and idle problem (variation ,jump) return . Removal decorativ cap engine no problem . Maybe fuel presuree regulator or fuel pressure sensor . I don't know.

"Decorative cap" --> Oil cap?

 

If you need to relief a pressure in the oil system, you probably have a very serious issue with the compression in the cylinders. 

 

 

Think he means the engine cover - with TSI on it.

How this can fix anything? It has no influence to the work of engine?

 

Yes , cap whit tdi logo . Vcds not detected error code . 

Only remove cover engine whit tdi logo and good working engine . 

Sounds like your pcv valve is stuck closed. 

Pcv ? 

Positive crankcase ventilation.

Bear with us.

Fuel temperature sensor? Can you connect up VCDS to view realtime data?

47-50 c. Fuel temperature. 

What conditions do those data represent? With or without engine cover fitted?

 

This pictures ist bad working engine . My version in engine software .

Full level fuel no problem , low level maybe temperature after off engine ist hot fuel and probleme idle . I don't know.

Hi, can any one of you use vcds and record values of fuel metering valve activation, fuel pressure regilator valve activation and upload clip for ea288 heated to 90 degrees of field work (idle) ?