buildingdoc
Full Access Members
Okay. Losing my mind and feel I am throwing a bunch of bad money at it.
Specs: 2004 Expedition 4.6
Symptoms:
Starts and dies at idle. have to manually keep the throttle up to keep it from dying. getting horrible fuel mileage. getting about 175 miles to a tank. Getting codes p0171,174 as well as O2 sensors too rich.
What i have done:
replaced PCV hose to back of TB. Replaced MAF sensor. Cleaned IAC. tested Vac lines with starting fluid as well as pinching to see if idle comes up. all unsuccessfully. also took IAC off and watched it move when key was on. Didnt see it go the full stroke... but it moved. No misfire codes and had a couple intermittent EGR codes that cleared on their own. every now and then I can get it to idle... but it really stumbles and its about 400-450.
I am so lost now.
Thanks in advance.
Specs: 2004 Expedition 4.6
Symptoms:
Starts and dies at idle. have to manually keep the throttle up to keep it from dying. getting horrible fuel mileage. getting about 175 miles to a tank. Getting codes p0171,174 as well as O2 sensors too rich.
What i have done:
replaced PCV hose to back of TB. Replaced MAF sensor. Cleaned IAC. tested Vac lines with starting fluid as well as pinching to see if idle comes up. all unsuccessfully. also took IAC off and watched it move when key was on. Didnt see it go the full stroke... but it moved. No misfire codes and had a couple intermittent EGR codes that cleared on their own. every now and then I can get it to idle... but it really stumbles and its about 400-450.
I am so lost now.
Thanks in advance.
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