Ford F-150 stalls completely and all power turns off while driving it

40

Asked by GuruBHNPQ Jan 03, 2019 at 09:50 AM about the 2017 Ford F-150 King Ranch SuperCrew LB 4WD

Question type: Maintenance & Repair

What could cause a Ford F-150 to suddenly lose all power and be like a
sitting duck unable to turn anything on or have any lights or indicators shown
either before or after while driving?

12 Answers

40

Thank you the alternator is good. I’ll see about those other two. So it would turn off engine and all electric?

4 people found this helpful.
290

Fuel pump fuse relay. #27 I believe. Defect in the fuse box causes it to melt and when it does it degrades signal to the So the PCM thinks the vehicle has been in a crash so it cuts all power to prevent fire. Ford has a relay relocation kit they should install for free. TSB- 15-0137 for the uel pump fuse. The kit is ford part EL3Z-14293-A Kit-Terminal

26 people found this helpful.
380

My 2017 F 150 died while driving tonight. Had radio & 4-ways but wouldn’t turn on. Not one sound. Called dealer; they got me roadside assistance & had it towed. Once it was parked at dealer it started! I left it for them to look over. Any idea what happened?

38 people found this helpful.
40

My 2019 did the same and it was the perge valve. Had it replaced but 1000 miles later it did the same thing. Now they cant figure out anything

4 people found this helpful.
40

Our F150 King Ranch did the same thing, 2 Sundays in a row. Had to have it towed 2x. Dealer claims they don't know what the problem is because after a while, it starts back up again. Last weekend we were stranded for 5 hours, and a bit over an hour this past weekend.

4 people found this helpful.
60

My answer is mr Ford needs to put his family in my truck and go for a ride. He won’t and I don’t blame he for not doing that. What I do blame him for is to continue to sell this junk. Stop selling these truck. Yea rite he don’t care who he kills in these vehicles are not safe mrford

6 people found this helpful.
100

I have a 2019 Ford F150, on Tuesday, April 28, 2021 my engine shut off while driving for the fifth time. Dropped it off at the dealer yesterday and the lady told me she will check the codes, she said if they don’t get any codes there is nothing they can do to which I asked what has to happen do I need to be killed before you guys do something about this problem, her reply is there’s nothing we can do if we don’t get a code.

10 people found this helpful.
20

I have the same issue, 2019 5.0 shut down twice while driving, no codes. Ford won't do anything, after months of trying, still under warranty. will try the full pump fuze.

2 people found this helpful.
20

While driving my f150 2022 it shut off all electrical then came back on in like 2 sec.

2 people found this helpful.

two things to consider 1) Jereven answered 5 years ago "Fuel pump fuse relay. #27 I believe. Defect in the fuse box causes it to melt and when it does it degrades signal to the So the PCM thinks the vehicle has been in a crash so it cuts all power to prevent fire. Ford has a relay relocation kit they should install for free. TSB- 15- 0137 for the uel pump fuse. The kit is ford part EL3Z-14293-A Kit-Terminal" 2) Fuel Pump Shut Off Switch user manual page 240 2006 F150 King Ranch " This device Stops the electric fuel pump from sending to the engine has had a substantial jolt. If after an accident the engine cranks but des not start this switch may have been activated." Page 241 To Reset the switch: 1)... 2)... 3)... reset the switch by pushing in on the reset switch. The sensor sends the shut off signal to the PCM and this activates a Master Control Relay shuts off everything. It may reset after a undisclosed period of time. However, all components fail and the sensor is notorious for sending false signals to the PCM for "G" forces that are nothing more than a rough road. Note the reset procedure is for the relay not the sensor.

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