I have a 1998 escort Zx2 I keep getting a code 172 on it. I have replaced o2 sensors and injectors. The code states bad o2 sensor. Any ideas
Oct 15, 2009 at 5:43 AM
1998 Ford Escort 1998 Escort Zx2 Trouble code 172
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P0172 Running rich
Could be a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant temperature sensor that prevents the engine management system from going into closed loop mode
Could be a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant temperature sensor that prevents the engine management system from going into closed loop mode
Oct 15, 2009 at 9:11 AM
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