Loss of power after replacing MAF sensor

[rba]

I have been experiencing the same problem. I dont know if I am getting BAD replacement parts or not since its not fixing the problem....and I am quite sure its the MAF. I think I am going to go get one from the dealer...then I know it is good so I can move on with finding out if it is the MAF or someting else.

[lo_jack]

Originally Posted by Big "J"

Try putting the old one back in and see if your hesitation goes away. po171 and 174 codes are lean codes at your o2 sensors, pre-cat.

With decayed CVV hoses you may a bad CVV now and have some fouled plugs that need cleaning or changing. The CVV may need to be changed as well. Pull some plugs and check for black stains/heavy oil residue.
On the flip side the O2 sensors may be fading on you and need replacing.

That's what I would do, plus look for oil buildup in the intake manifold. You are lean for a reason.

[rba]

I checked on the intake manafold. All looks good there and I checked/replaced some parts on the intake boot that were iffy parts, so the intake looks good. I believe its the MAF and am looking for a known good replacement.