This is my first post here and i really hope u can help out...

I have a late model '95 Blazer LT, 4.3w with central port F.I. Its ODB11/2 but uses ODB2 diagnostic equipment.
The engine has a bad miss, it's had a new computer installed by the dealer, new coil modular, new crank position sensor, new cam position sensor and erg cleaned and reinstalled. I took it to a shop which did a diagnostic for $200! He said the voltage switch (distributor) needed to be changed.
It will not accelerate over 25-30mph.
Its starts and idles fine but will not run under load...
Please help

 

wow sounds like you have a serious issue on your hands. The standard questions all apply though, have these shops all checked your tune-up parts (ex. spark plugs, wires, etc etc) if not then it is very possible that the problem could be the distributor, change it and see.