99 Blazer motor repair

We replaced the intake gasket, air filter, plugs wires cap, mass air flow sensor and have checked for vacuum leaks engine still bogs down and seems not to want to shift.

Pay for registration!!! I don’t think so!!! This sucks!!!

For years, internet users have been spoiled by being offered free services. It looks like the the free-lunch counter is closing…You are going to have to put a stamp on your e-mails and pay for Google searches…Oh Dear…

Check the operation of the Throttle Position Sensor and its wiring. Use an analog VOM to see that the output voltage is smooth and linear as the throttle is openned.

???

What is that about?

Oh right - and the question. You mention spark and air - how about fuel? Anyone check the fuel pressure? How old is the fuel filter?