P0102 - Bad maf?

[Freebeer187]

Two days ago my SES light came on. I got the code checked out. Its P0102. After some research it looks to be a bad/failing maf. Im going to go carefully clean the maf right now. Does anyone have any experience/suggestions on what could be going on?

Thanks!

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[Freebeer187]

I used cnc maf cleaner. It was dirty but the code is still there...

 

[PANDA]

Did you clear the code after the MAF cleaner and it came back right away? Does the car run like shit?

 

[10sec]

x2, maf code will not clear itself, you need it cleared.

 

[b00sted]

Speed density is more fun anyways.

 

[Freebeer187]

How do i clear the code?

 

[raygtps]

You can bring it by my house and I can clear the code.

 

[02BlueGT]

IIRC Autozone can do it for free when they read theml

 

[raygtps]

Autozone will read it, bot they don't like to clear it.

 

[02BlueGT]

Autozone will read it, bot they don't like to clear it.

Ah..... Anyone with HPT or PWR Tuner can clear them....Time to head to HP

 

[Freebeer187]

Would a dirty maf = bad gas mileage?

 

[Scudman64]

dirty maf on a 3800 = bad gas mileage, funky idle,

9/10 times ive seen that code, you replace the maf. if you clean your maf. you have to do it regularly. once it dies. its dead.

 

[Scudman64]

oh, and this is off topic. but.. autozone is not allowed to shut off ses lights, technically, its a fellony. only shops that are emissions certified with the state may shut off ses lights. autozone CAN do it. but they can face large fines if caught.
i can shut off lights, i have a scanner that will do it. need it done? come talk to me.

 

[hellraiser319]

Pull negative cable on the battery for a couple minutes, works as well.

 

[SleeperLS]

did you mess with the MAF or anything around it recently? Before the code was thrown?...if so make sure your wires are all in place around your connections and nothing is loose or broken.

 

[Freebeer187]

did you mess with the MAF or anything around it recently? Before the code was thrown?...if so make sure your wires are all in place around your connections and nothing is loose or broken.

No. I havent touched anything under the hood for weeks... Unless when i was washing the car i got water on the air filter. Shit thats what it must have been. I was blasting the cowel with the hose. I started the car a little while later.

 

[Scudman64]

water can kill a maf...

 

[Freebeer187]

water can kill a maf...

Yes... Yes it can

 

[KagA152]

since were on the topic here, how many g/sec are you guys running at idle (for those with scanners)?

 

[Freebeer187]

Pull negative cable on the battery for a couple minutes, works as well.

Does this work? I think ill give it a shot!

Edit: it did not work

 

[raygtps]

Code is cleared.

 

[Freebeer187]

Code is cleared.

Damn bad news. As soon as I left the driveway the light came back on. Looks like its new maf time...

Once again thanks for clearing the code

And now that I think of it, Do you think it could be the alternator failing? The code came up as low voltage to the maf. I wonder if its something electrical rather than the maf itself? What do you think?

 

[Turbocharged400sbc]

check for 5v and good ground at the maf connector, i doubt its the ground as that is typically a high volt code.

then replace it...if your VE was tuned properly you can just unplug it and it'll drive and shift fine...in410secVEisuseless

 

[Freebeer187]

I checked the alternator today.

While running the alternator was pushing 14.2 ~ volts. The battery was also running at 14.2 ~ while running. The battery had 12.5 ~ volts while the engine was not running.

I then checked the 3 wire plug that goes to the maf. I used Pink as my positive and the middle Black as my ground. I also tested using just the pink wire and using a ground elsewhere (chassis). Every single time the multimeter read 14.2 ~ volts. Never once could I get anything remotely close to 5v. Was I doing something wrong?

Im guessing bad maf. The alternator seems fine.

(~ = give or take a few 0.X volts)