Stalling on initial start up

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Feb 25, 2008 | 08:44 PM

fordboy67

Thread Starter

Cargo Master

Joined: Dec 2007

Posts: 2,822

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From: Minnesota

Stalling on initial start up

I have a 98 Expy with the 5.4l V-8. About a month ago it would not stay running when cold starting it in the morning unless I gave it a touch of gas, then it idled fine. I figured it was because of the extreme cold (it was -15 F). I changed the fuel filter since it looked original, or at least very used. This past week it has continued to do this even at temps at 10 to 20 F. I keep the gas at or above a half tank so I don't think freeze up is a concern. What could I check? Thanks in advance!

Feb 25, 2008 | 09:06 PM

tommyleea

Tuned

Joined: May 2004

Posts: 334

Likes: 4

Do you have any codes? If not, I would probably start with the Throttle Air Bypass Valve.(common bad actor). Sounds like it might be sticking. You could try to just clean it to begin with.

Tommy