Maf clean ?

[the98stang]

MS. I bought the tool from sear ( $20 ) worth of 30min driving, Take out clean it, dint feel any different yet. I take out the negative battery, and driving around then check engine light still on.

P0500 - Vehicle Speed Sensor fault.
P0171 - System Too Lean - Bank No. 1.
P0174 - System Too Lean - Bank No. 2.

car keep jump from 1k or 1.5k, and high idle for 4-5 second then drop down to 800.

Lean codes are an indicator of vacuum leaks. Check all vacuum lines with butane as I recommended previously.