Runs Rough, Surge, Hesitation, Poor Part Throttle - Hot

CONDITION
^ Rough running, surge, hesitation, poor part throttle performance - hot

POSSIBLE SOURCE
^ EGR valve malfunction/erratic operation.
- Perform EGR valve functional diagnosis.

^ EGR valve contamination.
- Clean EGR valve and if necessary, replace EGR valve.

^ EGR solenoid malfunction.
- Run quick test.

^ Pressure/vacuum signal hose(s) leak (PFE).
- Replace hoses.