I have a Mk4 Astra 1.8 petrol 2002 130k Miles. When starting the idle speed revs up & down, it judders when driving the first 500metres. Plenty of oil, water was a bit low. During a 2 hour journey the engine got hot (needle in middle) and the orange engine symbol came on. The ECU codes are
p0420 p0170 p1130
The DTC freeze data are:
DTC freeze: P0170; Fuel sys1 = CL Fuel sys2 N/A LOADPCT = 12.9% ETC = 75deg SHRTFTI = 8.6% LONGFTI = 15.6% RPM = 915/min VSS = 10km/h
In the readiness monitors it says EGR SYS = N/A does N/A mean the EGR has been bypassed/disabled?
Any thoughts what I should start with to fix this engine problem?