MLTurner

I keep getting this MAF code. I've installed a new MAF and still get this Code 33. I should say that it is not all the time. If I shut the vehicle down for 60 seconds and restart it will be fine for a time. I've have just rebuilt the motor. Installed speedpro 10/1 pistons & SLP runners,Chevys Hot Cam, port work on heads& intake system. New headers. just trying to find the problem. Any ideals will be HELPFUL,,,,,,,,,,,

drive it

iTrader: (1)

First make sure that the relays are good, no shorts, adjust the throttle blades so your iac is about 20's at isle. If that doesn't do it-with your mods, you need a chip burned-there's a table under ecm constants-maf high diag (code 3) error-change from 45gps to about 100gps; it'll still set a code for a real problem and that'll get rid of the false code that your mods produce.

Vader

A DTC 33 is for unexpectedly high measured flow. Make sure the TPS is adjusted correctly.

MLTurner

Thanks, Ive set the TPS and IAC(new)