vurcross.blogg.se - 2002 chevy impala mass air flow sensor problems

Here's the description of each circuit below: I'll be using these letters for the circuit descriptions. You'll notice that the photo above, I have the MAF connectors lettered A thru' C (if you look closely at the MAF sensor itself, you'll see these letters on it too). Whether your driving a Buick, Chevy, Olds, or Pontiac vehicle (with a 3.8L V6) the circuits descriptions of the wires coming out of the Mass Air Flow (MAF) sensor are the same. Circuit Descriptions Of The GM MAF Sensor ConnectorĪs you're already aware, the MAF sensor on your vehicle is a 3 wire sensor. One other tool, that I recommend, is for you to use a wire-piercing probe to to test the signal of each wire (to see what this tool looks like, click here: Wire-Piercing Probe. This multimeter has to be a digital multimeter that can read high Hertz (Hz) Frequency (don't have a digital multimeter that can read Hertz frequency? Click here to see my recommendations: Buying A Digital Multimeter For Automotive Diagnostic Testing).

A tremendous lack of power upon acceleration.Īs I mentioned at the beginning, you don't need a scan tool to follow the tests in this article, but you do need a multimeter.

MAF sensor malfunction that DOES NOT light up the check engine light (CEL).

P0101 Mass Air Flow System Performance.

MAF codes that light up the check engine light (CEL) on your instrument cluster.

This list covers the majority of symptoms I've seen on these types of GM mass air flow sensors: Puedes encontrar este tutorial en Español aquí: Cómo Probar El Sensor MAF GM 3.8L (1996-2005) (en: ).

How To Test The GM Mass Air Flow Sensor: GMC Savana Van and Chevy Express Van 4.3L, 5.3L, 6.0L Engines (2003-2008).

How To Test The GM Mass Air Flow Sensor (Early Type): Buick, Chevy, Olds, Pontiac 3.1L, 3.4L, 4.3L, 5.0L, 5.7L V6 Engines (1996-2005).

How To Test The MAF Sensor on 3.1L, 3.3L, and 3.8L Buick, Oldsmobile, Pontiac (1988-1996).

There are also several other MAF sensor test article I've written you might be interested in looking at: If you need to just clean the MAF sensor, you can find this article here: Cleaning The MAF Sensor (at: ).

For more specific application info, take a look at the box titled Applies To: on the right column. Now, in case you wondering if this test applies to your specific vehicle, this article covers the MAF sensor on 1996 thru' 2005 3.8L V6 Buick, Chevrolet, Oldsmobile, Pontiac 3.8L V6 equipped cars. In this article, I'll show you how to test the mass air flow (MAF) sensor on your GM 3.8L (3800) vehicle without a scan tool.