I recently replaced my EGR valve in my '95 Ford Ranger and yet the check engine light still comes on. I unhooked the battery cables for 15 minutes which caused the light to go off, but it came back on after about an hour of driving. What else is there to do?|||Well, since you've already installed the EGR valve you've puchased from Auto Zone, the option of returning the part for a refund is no longer viable. But, I would bet the farm your EGR valve WASN'T the problem. More likely it was the DPFE sensor that needed replaced, NOT the EGR valve. This sensor is either an aluminum bodied rectangular shaped sensor with two rubber hoses and a three wire electrical connector connected to it, or a black pastic sensor if it has already been replaced before. This is a VERY commonly failing part on ALL Ford products. You would need to purchase it from the Ford dealer parts department. Just ask for part number F77Z-9J460-AB at the counter to get the part you need. Hope this helps|||You did not fix the problem.
Odds are that you got advice from someone who does not know their Fords and replaced the EGR valve without either:
1. Cleaning the EGR tube ports
2. Check the DPFE sensor for proper operation.
Let me tell you this much...I got an EGR Insufficient Flow code on my old 1994 Ranger and it was because these two rubber hoses going from the EGR tube to the DPFE sensor had cracked apart and only the two upper halves of these hoses were hanging in place.
Unlike GM and their junk electronic EGR valves, Ford EGR valves are quite tough.
See the point here? Good.|||You can either disconnect the negative battery cable for 5 minutes, or go to an auto parts store and have them erase the codes with their OBDII scanner.
If the problem still exists, the light will come back on after a drive cycle (50-100 miles)
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