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Help! Stalls Out.

5568 Views 8 Replies 5 Participants Last post by  LMJD
Hi guys,

I'm new to the forum, so maybe you've already answered this somewhere, but I've got a 1990 Ford F-350 with a 7.3 ltr diesel that stalls if I lift my foot rapidly from the accelerator. It will restart easily, and it doesn't make any funny noises, it just dies. It will idle, you just have to lift your foot slowly enough so that it doesn't die. I've had it recently serviced, new fuel filter, no obvious fuel or air leaks. Does anyone know what might be causing this?

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Better to use a diesel fuel additive with every fill than trans fluid..... Trans fluid is not a lubricant.
You're probably right that it is better to use a diesel fuel additive, but you are 100% wrong that trans fluid is not a lubricant. Like motor oil, it is made of crude plus additives. IE, it is virtually the same thing as motor oil, though it has more additives; mostly more of the same stuff, just in different proportions. If you look inside of your Ford C-II power steering pump you will find that it is a high-friction design with slippers on a rotor running around inside a cam. If trans fluid were not a lubricant then the pump would grind itself away in no time. (Conversely, if you run your P/S pump empty, you will destroy it in fairly short order.)

Diesel fuel has had lubricity additives since it became low-sulfur. So you really shouldn't need to add anything... but adding motor oil or trans fluid certainly should increase the lubricity of your fuel.
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