nsjoel808

anybody have a pic of what the maf looks like inside, the connectors and how they are supposed to be connected?

nsjoel808

are they supposed to be bent in in different directions?
this is for a '92 3vz, dont know if there is a difference

nsjoel808

k so i got an maf from a junkyard, I think the guy lied to me about the year cause it is not the same metal unit, its black plastic, if it is for the 1mz, can I splice the wires onto my car?? any input would be appreciated

GEORGE_JET

92airflowmeter.doc

Do not try to make that airflow sensor to work, it sounds like they sold you the wrong one. I have attached a couple diagrams that show the airflow sensor circuit, along with the air temp circuit. Do the the combination of codes that you have, I assume that the BR wire has a open,(or the terminal is damaged). Without a grd to the airflow meter, the meter output signal would be pulled to +5 volts (no matter where the wipper of the potentiometer is) Also since the same BR wire supplies the grd to the temp sensor, that would also be pulled to 5 volts.

The Bg grd wire would explain both codes, it is HIGHLY unlikely that there is a internal problem with the airflow meter. You need to use a DVM and find out where the break is. It is a very bad idea to replace parts without making the required voltage checks first

llcoolpass

didn't you have another thread about this, and what did you think of the advice others and I have about it?

secondly, I agree with george jet. you should only use the 92/93 VAF, but, theoretically you could use the prior one too, but you shouldn't. the later one, nope, totally impossible to use it with the factory ECU due first to a totally different [INVERSE] output pattern.

you also shldn't get another used VAF if your problem is the common one...for obvious reasons. but i am not sure if you are up to speed on the common problem etc.