Trepidatii relanti golf 4

[safs]

salut
am un golf 4 1.6 16V cod motor AUS si aveam check engine aprins.
Mi-am luat un Vag Com si am verificat ce erori are banuind ca e de la EGR.
Cand am testat mi-a dat urmatoarele erori:
2 Faults Found:
16786 - EGR System: Excessive Flow
P0402 -- 35-00 - -
17979 - Left Engine Mount Solenoid Valve (N144): Short to Plus
P1571 -- 35-10 - - - Intermittent
Readiness: 0010 0001

Dupa, am sters erorile sa vad daca mi se aprinde martorul inapoi, dar au aparut trepidatiile la relanti. Inca nu am mers cu masina sa vad daca mi se aprinde si check engine.
Intrebarea mea e, de ce au aparut trepidatiile dupa ce am sters eroarea si ce inseamna a doua eroare ca nu prea am inteles si posibile rezolvari.

Va multumesc

[turbojack]

16786/P0402/001026 - Exhaust Gas Recirculation (EGR): Excessive Flow
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Reduced Exhaust Gas Recirculation (EGR)
Reduced Power Output/Engine running rough
Increased Emissions
Possible Causes
Exhaust Gas Recirculation (EGR) Valve stuck open/leaking/faulty
Exhaust Gas Recirculation (EGR) System leaking/faulty
Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve faulty
Possible Solutions
Check/Clean Exhaust Gas Recirculation (EGR) System
Check/Replace Exhaust Gas Recirculation (EGR) Valve
Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve

A doua este ceva mai ciudata:
"The 17979 basically means that you have a bad motor mount. The fluid has leaked out and and the mount collapsed and shorted out the solenoid. As for the secondary air injection, your on the right track. Check your vacuum lines and sai tubing for visible tears or leaks, but more often than not, the secondary air pump is bad"
De verificat furtunasele de vacum.

[safs]

dar de ce au aparut trepidatiile la relanti dupa ce am sters eroarea?
ce s-a modificat?