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Discussion Starter #1
Im going to give it a try and hope it works but I went to the dealor and the older guy found the # but he left on vacation and the new guy cant find it


Any way curious if some one can hook me up with a part number for a DPFE sensor for a 2003 Focus.

Thanks a bunch.
 

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Devil's Advocate. Just to cheese you off.
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I think I recall you saying you bypassed the EGR to test it, right?

If you bypassed the EGR and still had problems, a new DPFE will not help you.
 

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Devil's Advocate. Just to cheese you off.
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6,880 Posts
You'll be spending money on something that will not help.

From FocusHacks.com: DPFE Sensor and EGR Information
When the DPFE Sensor starts failing, it gives the PCM bad information. The DPFE Sensor is less sensitive, and the PCM thinks less recirculated gas is being burned than is actually so. Trying to compensate, the PCM opens up the actuator too much. This excessive amount of EGR combined with the air coming in via the throttle body leans out the fuel mixture, causing a lean misfire, which is the "stumble" or "hesitation" that is common as the DPFE Sensor fails.
So, if you disconnect the EGR valve, the computer can't do anything to open the valve despite it's best efforts, and therefore, an EGR-Caused lean misfire (even with a bad DPFE sensor) cannot occur.
 
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