missing happens when stopped but does not die, but runs just fine otherwise. I have replaced the EGR valve, o2 sensor, fuel pump/filter, oil sending unit. What else can I try?
missing when stopped in gear. on 1991 Chevrolet 1500 Pickup
STOP TRYING PARTS before you go broke and your truck is still not fixed. Have your vehicle diagnosed!
you might have a bad iac valve or a bad egr silinoide