p0102 mass air sens cir low freq ?????

**JRENIGAR** · 05-02-2010, 09:05 AM

thats the code Im getting. It started all the sudden driving down the interstate. It idles funny sometimes and sputters at low rpm when giving moderate throttle. I havent visually looked at the sens in a couple of weeks since I did the fra mod and cleaned the maf with the proper cleaner. Is the maf f-ed or is this not enough info??? BTW, I logged the car with the predator and tha maf freq is 2.32g/s at any rpm or throttle pos.

**Cutlass** · 05-02-2010, 05:30 PM

Sounds more like a wiring problem...maybe. Here's 2 quick tests you can run.
Unplug the MAF, turn the key on but don't start the engine. Use a volt meter and check for 12 volts across the pink wire and black wire. Next check for 5 volts across the yellow wire and the black wire.
Post the results

**JRENIGAR** · 05-03-2010, 06:52 AM

thanks, will do...

**Frost** · 05-03-2010, 01:03 PM

I would firstly check the ENG SENS fuse under the hood. It provides power to the MAF and O2s. From time to time I have seen it blown for no explainable reason. The car WILL set this code if it's blown.

**damons00maross** · 05-03-2010, 02:26 PM

yea my friend had the same problem it was the eng sens fuse.

**JRENIGAR** · 05-03-2010, 05:29 PM

thankxxx, will def check that one too!!! Will check tonight after work and report back tomorrow.

**JRENIGAR** · 05-04-2010, 07:46 AM

It was the fuse. The headers burned the bank 2 sens 2 hot wire for the o2, and was shorting out. Frost, I wish I had fully read your post first. I didnt see the part about the MAF AND O2's I just thought it was the maf. Got the chiltons manual out and looked over wiring diagrams till I figured it out.