just wonderin what all a code 33 means ,can this mean a vaccum leak,im a little cofused code 33 =(high voltage(low vaccum)at mass air flow sensor)does that mean my mass air flow ensor is crap or vaccum leak?any help would b appreciated,thanx,Joe

 

well i would guess it means that your sensor needs to be ADJUSTED
or is installed incorrectly... got it pointing the right direction?

 

yeah,its all installed correctly and wouldnt it come from the factory set at a default setting ?,cause it dont kick the code until i get up to about 45mph,dont know if that makes a differancebut how exactly would i set an adjustable maf?any insight would be great!thanks

 

well i would start looking for some type of potentiometer then with a volt meter adjust it so that at idle you have a reading of .5 volts and a reading of 4.7 volts at WOT

 

https://www.thirdgen.org/forums/tech...adjustable+MAF

 

could i just hook a volt meter to certain pins on maf connector and adjust to .5volts with the adjustment screw on the bottom of the maf sensor,if so what pins would i use ?

 

yeah i got the hint but i already spent $300 on the pos,i just need to know if an out of whack adjustment on it would cause a code 33,or if its bad,is there any way to test it?

 

Back-probe the dark green and black wires at the MAF connector, start teh engine, and read the voltage at idle.

 

and adjust 2 .5vdc?

 

yes .5 vdc at idle then make sure it is atleast 4.7 vdc at WOT it might be higher but your ECM will only see about 4.7

 

i think you found my problem,i checked to see if it was tuned to cold air and it is not,what can i do to stop the code 33,would i be better of 2 put the stock one back in,thanks for all the help

 

well i would try to get a refund if that isnt possible then i would try and tune that one i think it could be done by just adjusting the voltage as the turbulance created by the cold air will be present at idle and would be affecting the idle voltage of the MAF so you should be able to adjust it and be fine it is really simple to do as the idle setting seems to be the most important you should try setting that and see what that gives you