96 Blazer S10 Code P0101 Maf Or Vaf

kr10298 · #1 09-21-2004, 09:13 PM

My Blazer s10 96 has no acceleration. After driving it excessively today I got the ECM to cough up a code. It was "P0101 MAF OR VAF CKT RANGE/ PERFORMANCE". I am not sure what VAF is. But I looked at the Air meter made sure there was no visual debris and that the wires/plug was well connected. Before replacing the MAF meter, I was wondering if this code could be something else? Any comments are apreciated.

thank you.

BlazerLT · #2 09-21-2004, 10:47 PM

Have you ever done a tuneup? When have you done it?

What have you done maintenance wise?

Do you have an after market intake on your truck?

Have you Descreened the MAF?

kr10298 · #3 09-23-2004, 01:09 PM

Thanks for the reply,

I have not done a tune up in over a year.
The truck is all stock. No K&N filter, no descreening of the MAF.

I ran the car without the filter and it ran good. So I replaced the air filter hoping that was the problem. And it did help for a day. But it started to do it again. When it does it, there is no power, and when I press the gas pedal it feels like it is just sucking air. It does not always pop up the "check engine light". I have to push it real hard for that to pop up. I disconnected the MAF plug wire and then re-connected it and it appears to have gone away for now.

I am not too sure what to do when sometimes it works and sometimes not.

thanks,

scholzee · #4 09-23-2004, 01:30 PM

I have had a similar problem with mine, when it does it try running it with the gas cap loose see if it helps. The gas cap has a vent and if it does not vent properly a vacuum builds up in the tank as fuel is removed and the fuel pump can not pump at the proper pressure.

BlazerLT · #5 09-23-2004, 01:46 PM

Quote:

Originally Posted by kr10298

Thanks for the reply,

I have not done a tune up in over a year.
The truck is all stock. No K&N filter, no descreening of the MAF.

I ran the car without the filter and it ran good. So I replaced the air filter hoping that was the problem. And it did help for a day. But it started to do it again. When it does it, there is no power, and when I press the gas pedal it feels like it is just sucking air. It does not always pop up the "check engine light". I have to push it real hard for that to pop up. I disconnected the MAF plug wire and then re-connected it and it appears to have gone away for now.

I am not too sure what to do when sometimes it works and sometimes not.

thanks,

What did the tuneup contain?

kr10298 · #6 09-23-2004, 09:42 PM

The tune up was only change in
Plugs,fuel filter,cap,rotor and air filter.

I just wish it would break down for good. I think it is easier to troubleshoot that way. If sometimes it works and sometimes not...this really confuses me.

BlazerLT · #7 09-23-2004, 10:04 PM

sound like your MAF sensor has gone bad.

Time to change it.

kr10298 · #8 09-24-2004, 11:07 AM

Can you specify where is the sensor. Is it right after the whole meter assembly? or do you mean replace the whole meter.

Thank you

BlazerLT · #9 09-24-2004, 11:59 AM

It is half way between where the air intak connects to the top of the engine and the airfilter.

It will have a connector attached to it.

69CamaroRSSSLover · #10 09-25-2004, 11:35 AM

MAF = Mass Air Flow
VAF = Volume Air Flow

Generally this means the sensor is bad - replace it and this should correct the problem - if not post and I will locate testing procedure for wiring diagnosis

This is a UK website but DTC definitions are extremely easy to obtain and read:
http://www.gendan.co.uk/diagnostic/dtcs.php

BlazerLT · #11 09-25-2004, 09:29 PM

The MAF has to be replaced.

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