grubiaco

iTrader: (23)

I recently got a CEL P0102 for low MAF or VAF. I replaced the MAF because I thought I might have blown it or something but the code is still on. Does anyone have any suggestions?

rhyzin

iTrader: (1)

try pushing the wires into the harness some more. i've had this problem as well as high intake air temperature input.

you could also check if the holes on the triangle wedge thing in the middle have anything on them.

grubiaco

iTrader: (23)

I've been doing that but to no avail. I will do it just for checking sakes. Is there any other way that I would be getting a low MAF or VAF reading? I'm trying to think about it on all angles and the only other reasons I can think of is a blown relay involving the maf or a faulty vaf on my intake manifold or something.

Any other suggestions?

rhyzin

iTrader: (1)

wire number 3 (red-white) will be your MAS wire. wire number 5(blue) will be your ground wire. you can check either for damage. the ground is a shared ground, so if you can monitor your cam and crank sensor, you can look for erratic/abnormal readings from there, as well. if this is a culprit, a work-around would be to disconnect this wire from the ecu and ground it to the body. the alternative is to buy a new ecu.

the red-white wire could be checked at the harness/ecu/piggyback.

you can take a look at the MAS harness and see if the female terminals need to be bent back into shape for proper contact. most harnesses either have a tab that unlocks the terminal from the harness, or the harness itself is two-piece. i haven't taken apart a MAS harness, so i'm not too sure on how.

wire 7(blue-black) is for idle. it turns on a second sensor to fine tune idle/low load. i'm not sure if a failure in this sensor affects a P0102, though.

there could be a leak between your MAS and throttlebody.

would you happen to know the Hz reading from your MAS at idle?

grubiaco

iTrader: (23)

no i don't know the Hz reading. Is there a way to check it through the emanage? Because my emanage is throwing a red light and I have ben ignoring it because of the cel.

rhyzin

iTrader: (1)

does the red light blink once for half a second and then 3 shorter blinks?

can't find any Hz logging in emanage... maybe someone else with an emanage can chime in...

grubiaco

iTrader: (23)

I'll check tomorrow after work and let you know. Just for info purposes I have my jumpers set to everything nonvtec and also have my rotary to 383.

blaze_125

iTrader: (8)

I've had that code ever since I installed my piggyback... It comes and goes. And surprisingly the car pulls harder when the code is active

grubiaco

iTrader: (23)

no way I don't believe it! I drove my car with that cel on and it doesnt pull that hard. I want that code off so that I can run my emanage sucessfully. When the code is on my idle has an a/f ration of like 12. Which is way to rich.

grubiaco

iTrader: (23)

Since the code says low maf or vaf input. What will be sensing volume air flow? Maybe that can be the problem?

rhyzin

iTrader: (1)

it'll be in your MAS. on that brown wedge in the middle of the MAS are two pressure sensors that are just holes. one on each side. there are also two sensors in front of the sensor on the roof of the brown part. same deal, pressure sensors, but i believe they're used for idle. check for blockage.

grubiaco

iTrader: (23)

Alrighty, I ran into some other problems today. While I was trying to trouble shoot the code...I started the car it didn't start up quickly as usual. So I gave it a second go around and I heard a woosh bang sound. It sounded like a buildup of pressure was instantaneously released. So I run out to find where it came from and I saw some smoke or vapor coming from the intake manifold area. So as of right now I am thinking my injectors aren't sitting perfectly along with my fuel rail so I am going to redo that since installing the fuel rail/injectors/emanage started this whole situation in the first place.

grubiaco

iTrader: (23)

One more thing, can someone give me your jumper settings for the unit because I bought mine from a private seller.
Currently I have my rotary switches to 383 and my jumper settings to 1-2 (JP1), 1-2 (JP2), 1-2 (JP3), open (JP4), open (JP5), open (JP6), 1-2 (JP7).

Can someone please verify my jumper settings?

rhyzin

iTrader: (1)

looks right. all stock settings.

grubiaco

iTrader: (23)

Well as of right now my cel is currently gone. I do have the problem of running the car with the emanage now....