V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Rich Codes

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Old

Jun 5, 2011 | 06:10 PM

#1

Surge08

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Joined: Sep 2010

Posts: 4

From: DE

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Rich Codes

I have a 2000 Mustang 3.8L Automatic with California Emissions.

I have P0172 and P0175. Both banks lean.

Steps Taken

Cleaned MAF Sensor with Carb Cleaner
Cleaned Throttle Body
Replaced Air Filter

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Old

Jun 6, 2011 | 08:54 AM

#2

Surge08

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Joined: Sep 2010

Posts: 4

From: DE

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Anyone?

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Old

Jun 6, 2011 | 09:37 AM

#3

NeoTokyo

6th Gear Member

Joined: Dec 2003

Posts: 6,524

From: Sacramento, CA

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Welcome to MF, sorry about the slow reply.

Here is a site to check out.

http://www.obd-codes.com/p0172

http://www.obd-codes.com/p0175

They are both similar.

Could be a vacuum leak or fuel pressure problem.

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Old

Jun 6, 2011 | 01:44 PM

#4

jwog666

5th Gear Member

Joined: Mar 2008

Posts: 2,260

From: wisconsin

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mass airflow is bad, intake leaks, low fuel pressure all possibilities

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Old

Jun 6, 2011 | 06:49 PM

#5

LilRoush

6th Gear Member

Joined: Feb 2007

Posts: 8,540

From: South FL

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Could be O2 sensors reading wrong and messing up your AF ratio.

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Tags

1994, 1995, 2000, 38, ford, mustang, p0172, p0175

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