Ok... 13-31 normal idle not with in range,canister or egr valve controll system
12-21 Idle speed controll out of range, coolant temp out of range
14-41 ignition profile pick up erratic, o2 signal lean mixture
19-91 erratic idle speed signal, o2 problem fuel pressure out of specific range or injectors out of balance
Sounds like you need a few things
12-21 Idle speed controll out of range, coolant temp out of range
14-41 ignition profile pick up erratic, o2 signal lean mixture
19-91 erratic idle speed signal, o2 problem fuel pressure out of specific range or injectors out of balance
Sounds like you need a few things
