ENGINE FEELS LIKE ITS MISSING. THIS SHAKES THE WHOLE TRUCK. IT RUNS UP THROUGH THE GEARS FINE THEN STARTS BUCKING. ALSO WHEN IN PARK IF I GOOSE THE ACCELARATOR THE ENTIRE INTAKE ASSEMBLY JUMPS LIKE ITS STARVING FOR AIR. GOING ON FOR QUITE SOME TIME. OH, THE GOOD PART, I NEVER GET A CHECK ENGINE LIGHT SO NO CODES TO GO ON.

I HAVE REPLACED THE FOLLOWING ALREADY AND STILL NO FIX:

BOTH COIL PACKS
ALL PLUGS AND WIRES
FUEL FILTER (IN LINE) AND AIR FILTER
MAX AIR FLOW SENSOR
IAC (INLET AIR CONTROL)
TRANS FLUID AND FILTER
BELT, PULLEY,TORTIONER
REAR END GREESE

ANYONE HAVE SOME IDEAS FOR ME?

 

Sounds like it may be a vacuum leak. Do you hear any hissing?

The following is not the safest thing to do, but works for me....but then I'm more than a little crazy--

Let the engine idle and shoot a little starting fluid around the intake gasket and the PCV lines. Go slowly--a little area at a time.

If there is a vacuum leak, the engine will speed up a little then calm back down after the either is burned.

For the record, you didn't hear this from me---it falls into the "don't try this at home" category

Sidewinder

 

RE:above.......you can also do this trick with a small propane torch like you use for plumbing. (not lit of course) just crack it open a hair and waft it around all your vacuum lines. I don't know how dangerous it is.....but it sure helps narrow it down