i have a 2000 chevy astro van and it lacks power even when its not under a load. ive check codes and made the nessary repairs and replced nessary parts. checked compression, did a fuel presser test as well.

It would probably be a good idea to post what codes you have/had, what tests you've run with the results, what parts you've replaced and if possible a little more detail about the problem and if cold/hot makes a difference..........

1. 2000
2. chevy
3. astro
4. 4/3 liter vortec v6

the van will start and idle fine, but when i try to accelerate the engine just baugs and would smell like its running rich but no black smoke out the tail pipe.
the first code was a p0101, p0102, p0122,and i dont remeber the last one. ok so the first two codes had something to do with the mass. sensor so i changed it at the same time i had changed the plugs,plug wires, cap and rotor. Then cleared the code started it back up and it would idle just fine till i press the gas pedal moments later p0101-p0102.
i also did a compression test, along with a fuel pressusre test.
now i belive thats everthing. oh yah i replace the upper intake gaskets.


(This post was edited by whizzbang on Oct 30, 2009, 12:58 AM)

Your assuming that since you have a MAF code that simply changing the MAF is what it needs. This is not that simple. The code isn't telling you the sensor is bad. It's telling you there is a problem in the circuit that could be the wiring, the computer itself or something else all together. Even a plugged converter could give you that code. The circuit needs to be diagnosed properly.




78 Corvette Pace Car For Sale-18k mi orig-Florida

HT is correct. You may also want to take a vacuum reading, at idle & 2500 rpm and compare the readings.. Unplug the MAF and see if that makes any difference on the way it runs.......