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Running too Lean...P1131, P0171, P0174


willik67

New Member
Joined
Jun 23, 2010
Messages
1
Transmission
Automatic
My sons 96 3.0 started running a little rough and a little surging the other day. The codes that came up were P1131, P0171, P0174. Any help will be greatly appreciated.
 
Any help here? I have a similar issue, and plugs were a little whited too.\

I'm going to check Fuel Pressure.
 
oh thats a easy one, their are other things that could give a reading like that.

try looking at your pcv valve, these things will result in those readings, the hoses usually crack around them, it causes a vacuum leak and those are the readings you will get.
 

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