When to set DTC for engine surge maintenance?
When to set DTC for engine surge maintenance? • After driving at 6.25 mph or more, the actual engine idling speed varies from the target idling speed by between 100 and 200 rpm, five times or more during a drive cycle. • If the actual idling speed varies from the target idling speed by more than 200 rpm five times or more during a drive cycle, the ECM illuminates the MIL and sets the DTC. What causes an engine surge during fuel injection? In combination with the camshaft position sensor (CMP), the CKP signals are used by the ECU to...