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so what do you think...rich AND lean #1485784 01/20/06 03:53 AM
Joined: Oct 2003 Posts: 718 south carolina 9 99cougar OP Veteran CEG\'er
OP 99cougar Veteran CEG\'er 9 Joined: Oct 2003 Posts: 718 south carolina	I looked thru alot of old post and i know what the normal things to check out are. But i was wondering what would cause 4 codes that contradict each other? lol P0171, P0172, P0174, P0175 How can the computer think that it is rich and lean on both banks? My first guess was not the O2's cause they are less than 18 motnhs old...but i have put 14 bottles of nitrous thru her since June. Do you think that would effect the O2's? I am gonna check the following this weekend before i buy new O2's...injector seals, UIM/LIM gaskets, i am going to change the fuel filter(i bought it 4 motnhs ago but never put it on), clean the MAF. I already put new plugs and wires on it. I changed the PCV a couple weeks ago. 1999 Cougar V6 MTX SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit

Re: so what do you think...rich AND lean #1485785 01/20/06 12:17 PM
Joined: Aug 2003 Posts: 1,017 Hanover, MD P platinum_drew Hard-core CEG\'er
platinum_drew Hard-core CEG\'er P Joined: Aug 2003 Posts: 1,017 Hanover, MD	idk about the nitrous, but it could be one old code and one new code. I'd reset the PCM and check the codes again 1995 SE 2.5L V6/MTX 187k

Re: so what do you think...rich AND lean #1485786 01/20/06 03:06 PM
Joined: Oct 2003 Posts: 718 south carolina 9 99cougar OP Veteran CEG\'er
OP 99cougar Veteran CEG\'er 9 Joined: Oct 2003 Posts: 718 south carolina	Originally posted by platinum_drew: idk about the nitrous, but it could be one old code and one new code. I'd reset the PCM and check the codes again I have done this 4 times in the past month just to make sure it throws the same codes. The first couple times it only threw the rich codes, but now it is throing all 4 lol. I recently reset the PCM Sunday morning...on Tuesday it threw all 4 of these codes. So it isn't an old and new thing...something is just "wiggin out". 1999 Cougar V6 MTX SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit

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