What does the BJT sensor do on a Ford F-350 dually, diesel?

Asked by Apr 14, 2013 at 04:44 PM about the 2011 Ford F-350 Super Duty King Ranch Crew Cab LB DRW 4WD

Question type: Maintenance & Repair

My F-350 dually lost  power when accelerating while pulling my 1400# fifth wheel trailer. Heard a loud noise and speed slowed to a crawl with jerking motion at first.  Ford dealer tech said they thought it might be the BJT sensor.  Just wanted to know what the BJT sensor did.

7 Answers

101,365

No clue what the BJT sensor is.Since this is a diesel, it could be the blow off valve.

Correction: I was pulling my 14000# 5th wheel trailer. Thanks for the suggestion on the blow off valve. I'll ask the Ford Tech rep on Monday.

28,675

There is no bjt sensor that i can think of. Do you perhaps meean vgt? It doesnt have a blow off valve.

28,675

Sounds like maybe a turbo pressure hose blew off that would make a loud noise and you would lose power

What does a vgt sensor do?

101,365

It's a 2011, it should be under warranty.

28,675

that is true it is under warranty. but i guess the 6.7 doesnt have a vgt 6.4 did. but none the less it was a solenoid for the varible turbo. so dunno what they are talking about but they will fix it under warranty whatever the problem may be.

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