Results of Incorrect Operation

RESULTS OF INCORRECT OPERATION
With too much Exhaust Gas Recirculation (EGR) flow at idle, cruise, of cold operation, any of the following conditions may occur:
^ Engine stops after cold start.
^ Engine stops at idle after deceleration.
^ Vehicle surges during cruise.
^ Rough idle.
If the EGR valve should stay open all of the time, the engine may not idle.
If DTC 32 is stored refer to Procedures / Diagnostic Charts / Code 32 Exhaust Gas Recirculation (EGR) Circuit. Testing and Inspection

Too little or no EGR flow allows combustion temperatures to get too high during acceleration and load conditions. This could cause:
^ Spark knock (detonation).
^ Engine overheating.