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5.4L F-150 dies in gear


Ranger850

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Dad's F-150 ( '98 IIRC, 5.4L ) cranks and starts fine. Will even idle for ever, but as soon as you select a gear, it dies. We suspect a vacuum leak, but can't find it. He claims to have done a smoke test, BUT I'm not too clear on his method of said test. I'm hoping someone can point me in the direction to at least a starting point. I've never done a smoke test on any vehicle, but I'm sure I can figure it out with you guys' help.
 


rusty ol ranger

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My 94 E150 did this and it was something with the transmission. Lock up solenoid IIRC? Not sure.

Just an avenue to explore
 

Ranger850

Doesn't get Sarcasm . . .
TRS 20th Anniversary
Joined
Jan 24, 2018
Messages
8,443
Reaction score
4,691
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113
Location
Tallahassee Florida
Vehicle Year
2001
Make / Model
Ford
Engine Size
Born with a 3.0, looking for a donor V8
Transmission
Manual
2WD / 4WD
2WD
Total Lift
Stock 2"
Tire Size
Stock
My credo
Doing things wrong, until I get it right.
My 94 E150 did this and it was something with the transmission. Lock up solenoid IIRC? Not sure.

Just an avenue to explore
Makes sense, since he couldn't track a vacuum leak. Thanks.
 

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