Question:
there is a tube just behind the alternator with looks like an EGR with one vacum line on it. the code i recieved was P0401 EGR flow insuficient detected. would that mean it is plugged? the engine chugs when you step on the gas. as if you were learning to drive a stick for the first time but mine is an automatic and it has never done that before. we just pulled a 6000LB. trailer 500 miles and then it just started happening.
Answers:
How can i fix a crack in my radiator?
The DPFE sensor is right beside the EGR valve on your truck. But by the sounds of things, your EGR passages are clogged with carbon, causing the code. The DPFE sensor has two differently sized rubber hoses attached to it, along with a three wire connector. The part number from Ford is F77Z-9J460-AB for $62.00US, if you want to change this part anyway. This is a commonly failing part on all Ford products. If you want a picture, leave me your FULL Yahoo e-mail address and I will send it to you.YEAR, MAKE, MODEL, of the vehicle!!
That is either the EGR valve or the EGR pressure sensor, you can usually dissamble it and spray some carb cleaner and put it back together and be fine, the EGR should look like a black round thing with what looks like a cap on it, it should have two vacuum hoses runing to it.. the pressur sensor should be inline with one of the hoses, most likely mounted on the engine block by one of the valve covers..
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