jssblues

can someone please send me the link on how to test the egr circuit
HELP...............code 92

jssblues

help code 84

Joel5.0

84 - EGR Vacuum Regulator (EVR) Control Circuit Failure (O)....... is the EVR solenoid connected?

mjr46

after confirming connections..easiest way to test egr operation is run a koer test and hook/t in a vaccum gauge at egr valve connection and when egr portion of test is run.. you should see a rise on the vaccum gauge briefly.. if you do valve as porential to open then after that grab a vaccum pump and slowly apply vaccum to egr valve an it should start to idle rougher as valve is opened further..if it does all this... system is okay mechanically

jssblues

HELP........NOW I GET CODE 34 EVERY TIME

mjr46

have you tried replacing the evp sensor located on the egr valve??

jssblues

yes, i have even tried a couple different ones

jssblues

i swapped a couple of wires on the plug that goes to the coil and now i get code 31 instead of 34 and of coarse 84 that wont go away

Joel5.0

Codes 84, 31 or 34 will only cause an automatic EGR delete courtesy of the EEC. Any specific driveability problem you are trying to fix?

jssblues

surging idle