Question about 1999 Ford Ranger SuperCab
Engine had code p1400 replaced dmpfe sensor, check engine light went out but engine runs rough at speeds like 45mph and 55 mph, at higher speeds engine seems to run fine, and at idle speed engine is rough, any help appreciated. Thanks
Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..
Posted on Nov 23, 2008
I replace timing belt now it run pretty rough
Posted on Jun 04, 2013
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Posted on Jan 02, 2017
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The code P1400 reads "DPFE Sensor Voltage Low" (Ford, Mazda). Often it's caused by a bad DPFE sensor or clogged EGR passages. DPFE stands for (Differential Pressure Feedback EGRI) I would clean the EGR valve which cost nothing. If that does not cure the problem, you may need to replace the DPFE sensor, which does cost, and it may not fix the problem. If you want to be sure you replace the correct part, then visit your local Ford dealer.
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