Help codes p0171 and p0172 Fuel Trim Malfunction

V

v8carnut

New Member

Oct 30, 2005

7

0

0

Dallas TX

Nov 12, 2005

#1

• Nov 12, 2005

• #1

Check engine light came on. I pulled the codes and get p0171 and p0172 Fuel Trim Malfunction. It starts and runs rough at idle and misses at about 1200 RPM. Any ideas??

 

8

87AODGT

Founding Member

Jan 6, 2001

373

1

19

Toms River, NJ

Nov 12, 2005

#2

• Nov 12, 2005

• #2

p0171 is system lean and 0172 is system too rich, maybe a set of 02 sensors that are shot and sending the computer bad signals

 

V

v8carnut

New Member

Oct 30, 2005

7

0

0

Dallas TX

Nov 13, 2005

#3

• Nov 13, 2005

• #3

The codes are kinda vague I’ll change the o2’s I’m sure they could use it anyway. Thanks!

 

V

v8carnut

New Member

Oct 30, 2005

7

0

0

Dallas TX

Nov 14, 2005

#4

• Nov 14, 2005

• #4

OK I’m stupid I found the culprit , frick’n vacuum line… plugged it back in and she’s running sweat again.. and I dnd’t spend any money either.. Yee Haa