HAVE THE (MAP) SENSOR = (MANIFOLD ABSOLUTE PRESSURE SENSOR) CHECK AND REPLACED
HAVE THE ( T P) = THROTTLE POSITION SENSOR CHECKED & REPLACED
THE ARE NOT EXPENSIVE AND WILL CAUSE THAT PERFORMANCE ISSUE
NEXT CHECK THE SPARK PLUGS AND WIRES ( ALL IGNITION COMPONENTS ) = COIL / MODULES, CAP & ROTOR, SPARK PLUG WIRES.
THEN HAVE THE O2 SENSORS CHECKED
THIS SHOULD FIX ANY ENGINE PROBLEMS RIGHT AWAY
IF ALL OF THESE CHECK OUT OK
HAVE THE PCM = ( POWER TRAIN CONTROL) MODULE
RESET BY ( DISCONNECTING THE BATTERY FOR A DAY OR 2 IF YOU DON'T NEED THE SUV RIGHT AWAY THEN RECONNECT THE BATTERY, START THE ENGINE , MAKE SURE THE LIGHTS ON THE INSTRUMENT PANEL GOES OUT, THEN TAKE IT FOR A LONG DRIVE LIKE AROUND TOWN AND FOR A BIT & ON THE FREEWAY
IT SHOULD RUN BAD AT FIRST BUT JUST FOR MINUTES INTO THE DRIVE BUT ABOUT TIME YOU GET BACK IT SHOULD RUN FINE. THE PCM WILL BE RELEARNING THE ENGINE OPERATION AND TRANSMISSION
AND YOUR DRIVING HABITS AS WELL TO ADJUST TO STOP / GO DRIVING.
