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Ok I pulled the codes P0171 AND P0174. I was also able to see that bank 1 #1 o2 sensor was giving very sporadic readings. Same thing with bank 2 # 1 o2. So I am gonna go ahead and replace those, but which sensors are those?? 
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Originally posted by MapOfTaziFoSho:
Ok I pulled the codes P0171 AND P0174.
I was also able to see that bank 1 #1 o2 sensor was giving very sporadic readings. Same thing with bank 2 # 1 o2.
So I am gonna go ahead and replace those, but which sensors are those??
I though when you have both codes PO171 and PO174 together, it meant there was an intake/vacuum leak.
I dont think your O2s are both bad at the same, they are giving odd readings because unmetered air is getting into your engine, and that is messing them up.
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wow for someone with 2000 posts I guess you never saw the thousands of posts on p171 & p174.
By sporatic readings, do you mean voltage readings?
Check for a dirty MAF, low fuel pressure, vacuum leaks and/or intake leaks before spending money on anything.
Linky #1
Linky #2
Last edited by chongo; 04/07/04 02:14 AM.
1996 2.5LT V6 Contour ATX My Tour+help/info pics
E0 rims, Gutted Pre-Cats,CTA Custom Exhaust & Intake, Diablo Chip.
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I have no life
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Could be a number of things, but really you shouldn't replace the o2 sensors until you get the lean codes taken care of. If you have the lean condition too long it will mess the o2 sensors up and you will have to replace them, but if you don't get the lean condition fixed then the o2 sensors will continue to fail.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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Originally posted by chongo:
wow for someone with 2000 posts I guess you never saw the thousands of posts on p171 & p174.
By sporatic readings, do you mean voltage readings?
Check for a dirty MAF, low fuel pressure, vacuum leaks and/or intake leaks before spending money on anything.
Linky #1
Linky #2
I suppose not...hmmmm. Perhaps I should change my fuel pressure regulator...? 
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Originally posted by chongo:
wow for someone with 2000 posts I guess you never saw the thousands of posts on p171 & p174.
By sporatic readings, do you mean voltage readings?
Check for a dirty MAF, low fuel pressure, vacuum leaks and/or intake leaks before spending money on anything.
Linky #1
Linky #2
Yes I do mean low voltage readings. Or at least I think I mean that. It would jump from a higher number to a very low one, back up again, and seemed very very confused. I also will from time to time, oh fcuk it I am gonna replace my fuel pressure regulator and call it a day! 
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Originally posted by MapOfTaziFoSho:
I am gonna replace my fuel pressure regulator and call it a day!
Waste of money.
Check your PCV hose. If okay, replace your UIM and LIM gaskets.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
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I just replaced those not too long ago. Where is the PCV hose? If it is the one I am thinking then, it seems fine... 
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Originally posted by MapOfTaziFoSho:
I just replaced those not too long ago. Where is the PCV hose? If it is the one I am thinking then, it seems fine...
See the clamp..
The hose (Pastic) goes up passed the IAC and down the firewall. The plastic gets brittle and breaks.
Also the small 2 inch hose off the left side of the PCV can split.
1996 2.5LT V6 Contour ATX My Tour+help/info pics
E0 rims, Gutted Pre-Cats,CTA Custom Exhaust & Intake, Diablo Chip.
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I thought I saw in this incredible wealth of information some places to purchase o2 sensors on the internet, but I can't seem to find it again. The sensor I got from Checker did not have the correct connector on it (circular instead of rectangular.) Where is the best place to get the correct one. This is the front one by the radiator (code p1151). Mike D.
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