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p-0171 threwn after replacing o2 sensor #1631765 08/17/06 03:49 AM
Joined: Dec 2002 Posts: 647 A alibies OP Veteran CEG\'er
OP alibies Veteran CEG\'er A Joined: Dec 2002 Posts: 647	i replaced the sensor and soon after i get the same code... any ideas? 1996 ford contour sport Originally posted by Cookie Monster: Sometimes I just start slowing down and glare in the rearview and say "yeah I could go for an SVT rear". Jackasses.

Re: p-0171 threwn after replacing o2 sensor #1631766 08/17/06 03:52 AM
Joined: Jun 2005 Posts: 5,345 Virginia, USA T Tony2005 Addicted CEG\'er
Tony2005 Addicted CEG\'er T Joined: Jun 2005 Posts: 5,345 Virginia, USA	What engine and how many miles? Which sensor did you replace and why did you replace the sensor in the first place? "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Re: p-0171 threwn after replacing o2 sensor #1631767 08/17/06 04:08 AM
Joined: Dec 2002 Posts: 647 A alibies OP Veteran CEG\'er
OP alibies Veteran CEG\'er A Joined: Dec 2002 Posts: 647	zetec Mtx, threw a p0171 i posted it and was told to replace the o2 sensor... so i did i put a mil eliminator on the 2nd o2 sensor but i dont know why it would cause the other one to throw a code. 129500 miles 1996 ford contour sport Originally posted by Cookie Monster: Sometimes I just start slowing down and glare in the rearview and say "yeah I could go for an SVT rear". Jackasses.

Re: p-0171 threwn after replacing o2 sensor #1631768 08/17/06 04:12 AM
Joined: Jun 2005 Posts: 5,345 Virginia, USA T Tony2005 Addicted CEG\'er
Tony2005 Addicted CEG\'er T Joined: Jun 2005 Posts: 5,345 Virginia, USA	Did you replace the Upper sensor for the P0171 code? If you did, it could be a vacuum leak. Did you also check the other items previously suggested? Originally posted by Tony2005: Also check for vacuum leaks at gaskets, hoses and hose clampes. And clean the MAF sensor http://www.contour.org/mods/mods.php?s=howto&displayid=36 and http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=zetecmaint&Number=989728&page=&view=&sb=5&o=&fpart=1&vc=1 and http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/cb/25/0900823d801bcb25.jsp Edit. From TSB, P0171 - System Too Lean (Bank 1) The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The code is set when the adaptive fuel tables reach a rich calibrated limit. Fuel System: �?· Contaminated fuel injectors �?· Low fuel pressure or running out of fuel (fuel pump, filter, fuel supply line restrictions) �?· Vapor recovery system (VMV) Induction System: �?· MAF contamination �?· Air leaks between the MAF and throttle body �?· Vacuum leaks �?· PCV system concern �?· Improperly seated engine oil dipstick EGR System: �?· Leaking gasket �?· Stuck EGR valve �?· Leaking diaphragm or EVR Base Engine: �?· Exhaust leaks before or near the HO2S �?· Secondary air concern Powertrain Control System: �?· PCM concern Last edited by Tony2005; 08/17/06 04:16 AM. "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Re: p-0171 threwn after replacing o2 sensor #1631769 08/17/06 04:20 AM
Joined: Dec 2002 Posts: 647 A alibies OP Veteran CEG\'er
OP alibies Veteran CEG\'er A Joined: Dec 2002 Posts: 647	::goes out to car:: 1996 ford contour sport Originally posted by Cookie Monster: Sometimes I just start slowing down and glare in the rearview and say "yeah I could go for an SVT rear". Jackasses.

Re: p-0171 threwn after replacing o2 sensor #1631770 08/17/06 08:38 PM
Joined: Dec 2002 Posts: 647 A alibies OP Veteran CEG\'er
OP alibies Veteran CEG\'er A Joined: Dec 2002 Posts: 647	WOW! i got some CRC maf sensor cleaner and took apart my maf (it had some brown stuff covering it... sprayed it clean i can feel a major gain on power! wooo hooo 1996 ford contour sport Originally posted by Cookie Monster: Sometimes I just start slowing down and glare in the rearview and say "yeah I could go for an SVT rear". Jackasses.

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