1996 Mustang GT Trouble Codes 0171&0174

Erics281

New Member

Sep 2, 2003

3

0

0

Houston

Jul 15, 2006

#1

• Jul 15, 2006

• #1

I have a stock 96 Mustang GT, I am getting a Check Engine light that readssystem too lean on banks 1 and 2. When I look it up in Chilton's Manual it tells me "Air /Fuel ratio is too lean or rich for PCM to correct" from the previous statement I am assuming it is too lean, what can I do to correct this. Thanks for all help.....
Eric

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

10,633

7

89

the people's republic of massachusetts

Jul 15, 2006

#2

• Jul 15, 2006

• #2

Most of the time p0171 and p0172 are caused by either a vacumm leak or a bad maf sensor.

Do not replace the 02 sensors for these codes these are not the codes the pcm with show with bad 02's

 

Erics281

New Member

Sep 2, 2003

3

0

0

Houston

Jul 15, 2006

#3

• Jul 15, 2006

• #3

Thanks a bunch Mike.... I will check the MAF and make sure everything is ok around it.

 

d98gt

Founding Member

Mar 14, 2002

4,505

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204

SE Texas

Jul 15, 2006

#4

• Jul 15, 2006

• #4

http://forums.stangnet.com/showthread.php?t=648725 just happened to me yesterday. It has pictures to show which line was broke for me. The tube dryrotted so I bought new ones