Does anybody now where to start looking for problems when your car lists two codes for the mass air flow sensor. one is for over-current, the other is for under-current. if i reset the computer it will take a while to come back but it does. also it will sometimes not set a trouble light at certain times when the car is started. i have had the mass air flow sensor tested and it tested good. i have also replace the relay for the maf. any help on what to do now would be greatly appreciated.

 

Welcome to thirdgen.org.

There's two MAF relays...burnoff and power, either could cause an issue, also a bad MAF as well. It's also been learned that too high a TPS voltage can cause a MAF code too. Check/set the TPS at idle to .54vDC+/- .08 first, then look into the MAF relays/circuits.

 

i will try that, but, does anybody have any info on where the burnoff relay is located. to my knowledge the power relay is what i have already replaced. i believe that that are the same type relay. but i cannot get any definitive place where it is located...

thanks

 

Should be right next to the powerrelay...on the firewall are 3 relays, MAF power, MAF burnoff and fuel pump, but could be in any order.