97 gt40p 5.0L P0402 | Ford Explorer Forums - Serious Explorations

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97 gt40p 5.0L P0402

Joined
May 3, 2007
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Year, Model & Trim Level
97 awd v8
I have p0402 keeps poping up on my 97 mercury mountaineer it has the steel egr tube running from the passenger manifold to the egr valve. The truck sat for a year and didnt have this code before it was parked. I tryed looking everywhere for pics of where the dpfe on the 97 gt40p motor.
 






The steel egr tube has 2 rubber lines attached to it. They run to the DPFE.

Remove the hoses, and check them for splits-blown out ends. You do have to remove them to look them over well. A leak in one of these hoses, or in the steel egr tube is the most likely cause. If the hoses and main tube look good, then check the dpfe sensor. It's mounted to the upper intake manifold against the firewall, yes it is a bugger to get to.
 






thanks I found it was right in front of my face. I just replaced the steel egr tube last year. Ill take the hoses off and check out those.
 






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