Engine Shuts Down on Start Up!

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Oct 2, 2004 | 12:28 AM

VadPhoenix01

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Joined: Aug 2004

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Engine Shuts Down on Start Up!

Hi,

I am having a problem with my 2000 F-250. Usually after it sits for about two hours or overnight the engine will startup than just shut down, and it will continue to do this until you can hold down on the gas pedal and brake and take-off. But, after running the truck for about 30 mins. it will work fine. Also, I noticed that when it stops the rmps will gradually (quickly) drop below the 500 rpm mark and the engine will shut off.

My father thinks it may be the Catylitic Converter, but the Check Engine light has not stayed on yet, but I need to find out what is wrong because I cannot afford any down time soon.

Thanks for any information.

2000 F-250 Crew Cab
5.4L V8
122,000 Miles
STOCK, NO MODS

Oct 2, 2004 | 10:47 AM

SiNNeR

New User

Joined: Oct 2003

Posts: 23

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From: Royse City, TX

i have a similar problem with my 2000 F150 w/ 5.4

hope someone has an answer here soon.....

Oct 2, 2004 | 02:58 PM

gfreek

Senior User

Joined: Dec 2003

Posts: 152

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Its prob the IAC, Idle air control valve. It controls air bypass, I believe, at idle. My 99 5.4 has been doing the same thing intermittently, so I am just going to replace it. You can test with a multimeter, and the process is stated in other IAC postings and its in the Haynes repair manaul

Oct 2, 2004 | 03:02 PM

Gary B

Senior User

Joined: Jul 2004

Posts: 141

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From: Il.

replace the IAC. that will fix it!!

Oct 2, 2004 | 08:30 PM

VadPhoenix01

Thread Starter

New User

Joined: Aug 2004

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Hey, I took that advice you gave me and will be installing the new IAC tomorrow and will let you know how it turns out. Sorry about posting to the wrong fourm thread.

Oct 4, 2004 | 10:40 AM

Fordfanz

Senior User

Joined: Oct 2004

Posts: 466

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From: Pt St Lucie

so hey did it work I was wondering cause I have a similar proplem

l
thanks for the info

Oct 4, 2004 | 03:15 PM

RoyalFord

Elder User

Joined: Apr 2004

Posts: 866

Likes: 2

From: North Carolina

Please read the FAQ's at the top of the 97-2003 F-150 Page, it is there for common things like the IAC.

Yes, your problem is most likley the IAC.

Search for IAC - Idle Air Control Valve

Bryan