1978 ford f150 400m 3spd auto trans.

45

Asked by Myles May 14, 2019 at 08:25 PM about the 1978 Ford F-150

Question type: Maintenance & Repair

truck will idle fine for about five minuets then start to putter out like she ran
out of gas but will start again after a few cranks.  when at idle, in park or
drive, when the throttle is applied lightly the engine will bog down and likely
die.  i have to keep the RPM up for it to stay alive.  there is also a noticeable
whistle that responds to engine speed; whistling at a higher pitch at higher
RPM and lower at lower RPM, what does this sound like to you?

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