F150 Helllppp

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Nov 26, 2008 | 09:20 PM

ANNOYEDBYF150

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F150 Helllppp

04 F150 With 5.4. When I Am Coming To A Stop The Tack Is Dropping And Sometimes Results In A Stall. Wtf Is Going On????

Nov 27, 2008 | 11:53 AM

xjcamaro89

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Joined: Sep 2006

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From: New Castle, PA

You have anymore info, like and mods, you got a K&N, might be the MAF gunked up with filter oil, when was the last time all fitlers were changed, did this just start happening on a certain tank of gas? Things like that. Let us know.

Nov 27, 2008 | 09:09 PM

ANNOYEDBYF150

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There are no mods pure stock. About a week ago it started slow cranking. So i had my battery tested and it was only reading 11.3. So I got a new battery. Now the lights dim when it idles. when I come to a stop it stall not everytime but a couple times a day. It now idles around 400 rpms. If i tap the gas it will almost stall when the rpms drop. The air filter is clean I am not sure about the other filters I just got the truck a few months ago. I hope this will you help me lol thanks for everybodys time Happy Thanksgiving

Nov 28, 2008 | 06:48 AM

benningstspeed1.0

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Joined: May 2007

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From: SUNMAN INDIANA

you will probly have your pcm reflashed. the idle and accel are controled by the TB and that is all electronic

Nov 28, 2008 | 08:49 AM

xjcamaro89

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From: New Castle, PA

Might want to have your alternator checked as well

Nov 28, 2008 | 10:03 AM

FTE Ken

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Joined: Jan 1997

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From: Enjoying the real world.

Sounds like a bad alternator, which in turn ruined the battery.

Nov 28, 2008 | 08:48 PM

Tylus

MMNC (SS)(Ret)

Joined: Mar 2004

Posts: 11,606

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From: SE Georgia

agree, but it wouldn't hurt to clean your throttle body.

just use some rubbing alcohol and when you re-install, torque to 10 ft-lbs

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Nov 30, 2008 | 03:31 AM

mattd17

Fleet Mechanic

Joined: Dec 2004

Posts: 1,365

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From: Ketchikan, AK.

just by chance was your battery light on?

i ask this because i just had this happen to me a few weeks ago.... my battery died, and i was in a hurry to change it out, and managed to forget to hook up the lead from the alternator to the battery.....

i felt like a dumb a$$ when i saw what i had done..... only reason i found it was because i had bought a new alternator, and figured i would be safe and unhook the battery to install the alternator.....

i know, its embarrassing, but i just wanted to share it incase you have the same thing going on.