supercharger problems

i,VE GOT A 1995 PONTIAC BONNEVILLE SSEI WITH 117000 MILES ON IT AND I WAS GETTING ONLY 2.5 PSI OF BOOST, SINCE THE SUPERCHARGER IT HAD THE RATTLING NOISE I DECIDED TO GET ANOTHER SUPERCHARGER FROM EBAY AND I DID, THIS SUPERCHARGER ITS GOT THE SAME LETERS ON THE BOTTM THAN MINE SO I,AM ASSUMING THAT ITS A GENERATION 2 OR 3 LIKE MINE WELL THE BOOST STILL BEEN THE SAME AMOUNT 2.5 SOMEBODY TOLD ME THAT THE KNOCK SENSOR WAS BAD AND IT WAS KEEPING THE ECU FROM ADVANCING THE TIME SO I PUT A BRAND NEW ONE AND NOTHING, SOMEBODY ELSE TOLD ME HEAT PROBLEMS SO I REPLACED THE WATER RADIATOR AND NOTHING, I REALLY DONT KNOW WHATS THE BOOST THAT IT SHOULD HAVE BUT I THINK THAT 2.5 ITS NOT ENOUGH SO IF ANYBODY CAN HELP ME PLEASE THANKS CARLOS :banghead:

What did you do with your SC , the rattling could have been fixed for $30- $40 .It is a coupler in the nose cone, take off cone replace coupler,use RTV gasket glu and put nose back on.
Maybe you have a vacuum leak or your BCS booster control solonoid is bad.Also how do you know how much boost your getting, is it by the factory gauge.

What did you do with your SC , the rattling could have been fixed for $30- $40 .It is a coupler in the nose cone, take off cone replace coupler,use RTV gasket glu and put nose back on.
Maybe you have a vacuum leak or your BCS booster control solonoid is bad.Also how do you know how much boost your getting, is it by the factory gauge.
thanks yes i'am reading it from the factory gauge and the supercharger relay i dont know where is that one but the little blak can next to the supercharger its always close thanks again:banghead:

I dont know what you mean by black can, but if it is the little black cylinder looking thing in front of SC then it should be opening when you use boost maybe it is bad.

I dont know what you mean by black can, but if it is the little black cylinder looking thing in front of SC then it should be opening when you use boost maybe it is bad.

ok but the boost what should it be for this car? and how to fix it? now yes it its the black cylinder and when is at idle its all the way closed and then when i rev the engine up it opens but just a little?????????????????:uhoh:

Carlos boost should be about7-8 .Possible factory guage could be wrong they arent accurate.That boost actuator(sorry the roundish thing is actuator the square one under is boost solonoid) should be closed at idle and open while revving depnd how much rpm.The solonoid tells the actuator what to do.Try taking the vac line off the bottom of actuator and see if you get boost , if you do the solonoid is probably bad.If nothing changes then actuator may be bad.First thing I would do though is make sure none of your vac lines are leaking , fllow them and look for cracking, or leaks.I am also wondering if when you replace the SC if it gasket sealed properly.One more thing to check is TPS .FIRST CHECK VAC LEAKS.

[QUOTE=jdq]Carlos boost should be about7-8 .Possible factory guage could be wrong they arent accurate.That boost actuator(sorry the roundish thing is actuator the square one under is boost solonoid) should be closed at idle and open while revving depnd how much rpm.The solonoid tells the actuator what to do.Try taking the vac line off the bottom of actuator and see if you get boost , if you do the solonoid is probably bad.If nothing changes then actuator may be bad.First thing I would do though is make sure none of your vac lines are leaking , fllow them and look for cracking, or leaks.I am also wondering if when you replace the SC if it gasket sealed properly.One more thing to check is TPS .FIRST CHECK VAC LEAKS.[/QUOTE

THANKS A LOT I WOULD BE DOING IT TOMORROW SATURAY AND I WIL KEEP YOU POSTED AND THANKS AGAIN