need help with 95 mustang gt

Its had this problem for awhile, but it has been getting worse, and the check engine light comes on but won't stay on
 
Finally have some codes for you guys. 176-heated exhaust gas oxygen sensor voltage signal indicates lean bank #2. 332-insufficient egr flow detected. 543-fuel pump circuit open connection-electronic control assembly (eca) to battery. Any ideas
 
Just like in the pm, I'm especially now, still leaning towards changing, or figuring out where the problem is in the 02's or wiring harness for them. Either you have a bad ground circuit in the o2's/harness so it thinks it's lean (low voltage) and dumping tons of fuel, or like on mine somehow the ecm was somehow seeing 2.44 volts (yes, 2.44) from the o2's saying it was (not possibly) rich and pulling all of the fuel causing a true lean condition during the time prior to going into limp mode but after the hego delay period...........Or you simply need to replace your o2's if you're lucky. But that's just my opinion :icon_bigg I'm still not sure what kind of delays the cbaza eec's use so....anyone else?
 
TooSlo86 said:
Just like in the pm, I'm especially now, still leaning towards changing, or figuring out where the problem is in the 02's or wiring harness for them. Either you have a bad ground circuit in the o2's/harness so it thinks it's lean (low voltage) and dumping tons of fuel, or like on mine somehow the ecm was somehow seeing 2.44 volts (yes, 2.44) from the o2's saying it was (not possibly) rich and pulling all of the fuel causing a true lean condition during the time prior to going into limp mode but after the hego delay period...........Or you simply need to replace your o2's if you're lucky. But that's just my opinion :icon_bigg I'm still not sure what kind of delays the cbaza eec's use so....anyone else?
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