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Re: EGR - UIM Problem #1399872 10/12/05 12:54 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	Originally posted by ConnContour: .... Went to AutoZone and had P0171 and P0174 come up. Car idles nicely since I tightened down the EGR bolt. Car idles rough for a moment when it is warm just after I start it. I had the O2 sensors replaced 73000 miles ago. Also the car pings at just about any speed with medium throttle. Suggestions??? I don't think the O2 sensors are the issue. Check for vacuum leaks, clean MAF and put in a bottle of gas stabilizer. From TSB. P0171 - System Too Lean (Bank 1 Firewall side) 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 P0174 - System Too Lean (Bank 2 Radiator side) Same as DTC P0171, but Bank 2. See Possible Causes for DTC P0171 Edit. Duratec Maintenance for MAF cleaning. http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=958650&page=0&view=collapsed&sb=5&o=7&fpart=1 Last edited by Tony2005; 10/12/05 12:57 AM. "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Re: EGR - UIM Problem #1399873 10/12/05 11:51 AM
Joined: Sep 2001 Posts: 57 C ConnContour_dup1 OP CEG\'er
OP ConnContour_dup1 CEG\'er C Joined: Sep 2001 Posts: 57	When I drove it later this afternoon, car would start and then just die. It could barely hold the idle. When I tried to give it gas, it barely responded. It only seems at a start it does this. Car seems to idle fine while in traffic. I'll know more tomorrow when I start it up in the morning. I added a half a can of B-12 to my gas when I filled up at Chevron on Monday night. Car started fine on Tuesday morning and ran good for about 4 miles before CEL came on again. Car started acying up later in the day when car was warm.

Re: EGR - UIM Problem #1399874 10/12/05 12:09 PM
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	Time to spray some carb cleaner on the hoses and UIM/LIM gasket, EGR, etc. area to find the vacuum leak. If it idles faster, you found your leak. "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Re: EGR - UIM Problem #1399875 10/14/05 07:41 PM
Joined: Sep 2001 Posts: 57 C ConnContour_dup1 OP CEG\'er
OP ConnContour_dup1 CEG\'er C Joined: Sep 2001 Posts: 57	I finally threw in the towel and took it a local garage. The mechanic found it underneath the set of green hoses off of the EGR valve. I could hear it, but I could never locate it. Cost: $40. Money well spent.

Re: EGR - UIM Problem #1399876 10/15/05 02:50 AM
Joined: Oct 2002 Posts: 2,408 R Rogerm60 Hard-core CEG'er
Rogerm60 Hard-core CEG'er R Joined: Oct 2002 Posts: 2,408	Originally posted by ConnContour: set of green hoses off of the EGR valve. If these are the hoses to the DPFE, you probably have a clogged CAT. The exhaust pressure blows them off. Keep an eye on it. "Those who cannot remember the past are condemned to repeat it" -George Santayana

Re: EGR - UIM Problem #1399877 10/16/05 09:08 PM
Joined: Sep 2001 Posts: 57 C ConnContour_dup1 OP CEG\'er
OP ConnContour_dup1 CEG\'er C Joined: Sep 2001 Posts: 57	I had both pre-cats replaced about 75K ago. Main cat is the original. Car runs great now, IAC even works and no more pinging.

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