you say koeo =11,,than koer=12,16,,,you than say that you had a code 33 egr?when doing diagnostic on codes you need all the codes to be recorded and than research each one before going to next step,,,here is why ?koer 12,16 both go to pin test KE1,,CHECK FOR RPM DROP,,,you would unplug isc and see if rpms drop..if yes go to ke2 were service codes 31,32,33,34 present? if no go to ke3...were service codes 22,41,42,91,92 present? so as hission50 is on to...
from what your saying 11 is a pass and 33 is a continuous memory code...sayes go to DH95....note the EVP circuit indicated that the EGR valve did not open with the engine at stablized tempature and with EVR solenoid dudy cycle present..it sayes to check egr with a hand vacuum pump,,give it 20 inchs of vacuum and see if it opens and stays open with vacuum present...you didnt show a code for EVP///also thier is a service code 33:verify vacuum is present at egr valve//also thier is a engine running code 33:engine running code 33 indicates that the evp sensor input did not change after EVR solenoid was instructed by the processor to open the EGR valve.because a code 84 was not recieved in the koeo test ,it is known that the EVR solenoids fuctions electrically..it is also know that the EVP sensor is in the expected closed range because codes 32 and 34 were not recieved in eighter koeo or koer tests...