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Old Feb 6, 2004 | 12:46 PM
  #1  
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doc300
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From: southwest pa
engine codes

HELP!!! 96 F-150 with 6 cyl. I need some help with these codes.
P0172 says bank 1 to rich, P0174 says bank 2 to lean, P1151 says lack of 02 sensor indicates lean.
What would cause bank 1 to rich and bank 2 to lean. And P1151 really throws me off.
Could this be the Mass Air Flow Sensor or am I just waisting money.
 
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Old Feb 6, 2004 | 12:57 PM
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90f150moneypit
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From: Still under the hood in O
Check for a vacuum leak at the manifold with starting fluid (concentrating on bank 2) .
 
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Old Feb 6, 2004 | 01:42 PM
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doc300
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From: southwest pa
Thanks, I'll try that. The reason I'm asking about the MAF sensor is because Autozone said that the codes pointed to that. I bought one and plan on replacing in tonight.
 
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Old Feb 6, 2004 | 01:58 PM
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From: Still under the hood in O
Doesn't sound right to me but good luck.
 
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Old Feb 6, 2004 | 06:54 PM
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EPNCSU2006
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From: Concord, NC
A lot of times a dirty heating element in the MAF can cause the engine to run lean. Clean it before you replace it. Best way I found is to use some rubbing alcohol and a q-tip.
 
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