o2 Sensor?

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Feb 6, 2008 | 08:45 PM

Jimmysls98

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o2 Sensor?

ok i have rough idle, problem picking up speed and and engine code p0100 not sureone hundred and what is it o2 Sensor?

Feb 7, 2008 | 01:40 AM

Chevy Lover

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Joined: Jun 2006

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RE: o2 Sensor?

I can't help you there. My list of codes starts at P0101 and my O2 sensor codes start at P0131.

Mar 15, 2008 | 01:02 PM

tabluvsyou

Joined: Mar 2008

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RE: o2 Sensor?

i am having the same problem with my 95 blazer and my bf changed my 02 sensor and it is still doing it. i took it to the shop yesterday and they told me it was my efg valve. so just a thought

Mar 15, 2008 | 02:21 PM

xmradioguy

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RE: o2 Sensor?

P0100 - MAF Sensor Circuit Insufficient Activity

Mar 15, 2008 | 05:59 PM

swartlkk

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Joined: May 2005

Posts: 41,332

From: Waterloo, NY

RE: o2 Sensor?

As xmradioguy said, its a MAF sensor code. I would recommend cleaning the MAF sensor and seeing how it does then. Before you do that, just unplug the MAF and see if the rough idle clears up. If it does, then the MAF is the problem. Clean it and see how things go. Just be careful when cleaning the small elements on the sensor.

Now, while the rough idle may be a similar problem to what you are experiencing, tabluvsyou, your truck will never display this code. That is due to the fact that the CPI motors do not use a MAF sensor.