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P1046 CODE ALONG WITH p307 CODE REPLACED COIL PAC ON EUMBER 7 CYLINDER ENGINE SPUTTERS AND SHAKES WHILLE DRIVIG 40 TO50 MPH WHAT IS TPROBLEM AND WHERE IS DITHLOCATTED ALS THI IS A 1998FORD F150 WITH 504TITAN ENGINE[enter link description here

Vehicle: 199 FORD F150 5.4 TITON

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Hi there,

P1406 indicates an issue with the DPFE sensor. Here is some info for you.

P1406 FORD - DPFE Sensor Circuit Downstream Hose

Read more: https://www.autocodes.com/p1406_ford.html

P0307 indicates a misfire on cylinder 7. Here is a list of possible causes.

P0307 FORD - Cylinder 7 Misfire Detected

Read more: https://www.autocodes.com/p0307_ford.html

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