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Help! Stalls Out.

5570 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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How many miles on the the trans manual or auto.
Does it stall at corners if the clutch is disengaged?
What is your curb idle set at should be 650 manual in nuetral or auto in drive.
It's automatic transmission (newly rebuilt). As far as the IP's mileage, I'm not really sure, but probably many. The odometer reads 102,000, so probably that? Also the truck had been sitting for seven years when we bought it; we've had a lot of problems with other parts failing on us. It doesn't seem to stall at corners in particular, but often at stoplights and sometimes even when coasting - it idles at closer to 600 and sometimes as low as 500. I think the low idle is the problem.

Any idea how we might fix it?
OK, my husband talked to a local diesel mechanic, and the fix was so simple I'm still in shock! It's not shall we say EPA approved though.... we just dumped a quart of tranny fluid in the gas tank. Worked like a charm, didn't even have to drive very far before the problem went away. Has something to do with a little valve on the fuel pump (I think) that needs lubrication, and since diesel fuel has pretty much been delubed by some law or other, this switch tends to get stuck from it's lack.

Therefore tranny fuid = lube = FIXED!!!! Yaay!
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