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if you dont have check engine light , my suggestion would be to check for air leak around the intake somewhere.you could use throttle body cleaner and spray around intake and supercharger. a small leak will not be noticed by the map sensor. could just be a vacuum hose also.
MAP SENSOR ON TOP OF INTAKE BESIDE THE SUPERCHARGER. TAKE THE NEW MAP SENSOR USE IT FOR REFERENCE LOCATING OLD MAP SENSOR. WHEN YOU SEE IT ON INTAKE IF MATCH UP WITH OLD MAP SENSOR THEY MATCH UP YOU LOCATED THAT IT.
Make sure the timing chain and gears are in good condition. This motor has sensors that tell the onboard computer about how it is running and the computer adjusts things like timing, gas air mixture and such. If there is a bad sensor, it will cause this motor to miss, run sluggish, even knock and generally run poor "if" running at all.
I suggest you go to your local parts store and buy a Hanes Auto Manual for this vehicle and bone up on what sensors are present and how this system functions. You will find that this manual will provide insight on most problems experienced with this vehicle. It will also provide you will valuable information you will need to properly put this engine back together correctly. Good luck.
it is a great deal of work. The molded gaskets breakdown with time. You'll want to change the two 90 degree elbows as well - they are available from a dealer for a reasonable price. Also, the blower gasket is likely shrunk up and /or blown out. And you might as well replace the valve cover gaskets too as they leak oil as they breakdown with heat and time.
I did all of this on mine. Even as a professional, it took me a good 6 hours.
CHECK FUEL PRESSURE IT SHOULD BE 41 - 47 PSI. IF NOT REPLACE FUEL FILTER.IF NO CHANGE. REPLACE FUEL PUMP.IF FUEL PUMP IS GOOD.YOUR PROBLEM COULD BE A INTAKE LEAK OR SPARK IGNITION PROBLEMS.ALSO USE A SCANNER TO CHECK FOR FAULTY SENSORS OR THEFT DETERENT PROBLEMS.
maybe it has too much supercharger oil in the supercharger , that maybe be true what they say , it can be taken out , it should take two 4oz bottles, check your supercharger oil level, too much of it is not a good thing, overflow? it should take only the amount that is required, so dealership should know that
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