I've got a 1990 D15B2.Recently,when the car is run cold for like 5 min.,she has trouble starting.The computer is throwing a "Code 16", indicating a bad resistor or faulty wiring. I have checked the resitors,both of which are fine, and I need to know what else I can check and diagnose in this circuit?I'm hoping the starting issue has to do with this as well.Thanx for the help.