czy ktoś wie gdzie jeszcze szukać przyczyny błędu P0402,wywala go przeważnie w okolicach 850-900 obr/min i 85 st C

Walnięty sensor DPFE objawia się dygotaniem, jakby gubieniem zapłonów tylko na wolnych i wywalaniem błędów typu P1400, 1401, 0401, 0402.
Obecnie też przez to przechodzę.
"We have personally owned several Ford vehicles, including a Taurus, a Sable, and a Focus that the DPFE sensor failed on. Usually the failure starts with an almost imperceptible surge while cruising. Gradually it develops into an annoying surge and then the check engine light comes on eventually. Checking the code will usually reveal that you have a P0402. Other codes that may appear include P0401, P1400, and P1401. This problem was so bad for a few years that Ford actually put out a bulletin saying that if you had any of these codes and symptoms, don't even do any diagnosis, just replace the sensor!We have personally owned several Ford vehicles, including a Taurus, a Sable, and a Focus that the DPFE sensor failed on. Usually the failure starts with an almost imperceptible surge while cruising. Gradually it develops into an annoying surge and then the check engine light comes on eventually. Checking the code will usually reveal that you have a P0402. Other codes that may appear include P0401, P1400, and P1401. This problem was so bad for a few years that Ford actually put out a bulletin saying that if you had any of these codes and symptoms, don't even do any diagnosis, just replace the sensor!
Following is a quick explanation of how the DPFE sensor works:
When OBD2 was introduced, the EPA said that we now have to be able to know if the EGR valve quits working and turn the check engine light on if it does. Ford chose to do this by installing a slight restriction in the tube that brings exhaust to the EGR valve. Now we all know from science class that when there is flow through an orifice, there is a pressure drop across it. So Ford installed a pressure sensor across the orifice - when there is flow because the EGR valve opened, the pressure sensor detects the flow and informs the PCM that the system is working. That's why they call it a Differential Pressure Feedback EGR Sensor! Now, what do you think happens when you run hot exhaust gas into a little electronic sensor?"
Do Ciebie prawdopodobnie podchodzi taki http://www.ebay.com/itm/NEW-FORD-EGR-FE ... eb&vxp=mtr