CEL P1128 P1130 persistent

[blue62]

Originally Posted by puravidabahia

hello...i'll try to keep this concise; 2001 Boxster at purchase 105Kmiles; CEL P1128 P1130; replaced MAF Sensor twice as CEL with same codes; occurs mostly while idling at intersections; replaced O2 sensor, fuel pump; oil separator, cleaned throttle body housing; spark plugs; gas filler cap; same result; **at every fillup the vehicle initially fails to fire, only turns over with no ignition; after several attempts it fires but runs very rough and stalls until after driving 1/2 mile or so and then OK, however, CEL continues to come on after clearing

Any thoughts, suggestions?

thanks

Those codes are for telling you that the fuel system has reached the rich mixture threshold for both banks. In other words it is adding all the fuel it can.
The system adds fuel in response to lean conditions.
So you most likely have a vacuum leak.
Hard starting when warm and lumpy or rough idle are also indications of a vacuum leak.