2001 5.4 stalls when cold ....
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Junior User
Joined: Mar 2003
Posts: 55
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2001 5.4 stalls when cold ....
Boy, I'll tell you this 2001 F150 has been one of the most reliable vehicles I've owned. It's almost as old as my Bronco was when I retired it at 150k miles and 12 years of age.
So I was shocked this morning when I had trouble starting the truck and keeping it running. It cranks fine and will start but runs rough and won't stay running unless I hold the throttle open a bit. Now once I drove for 5-10 minutes everything was fine for the rest of the way to work.
I put new plugs in it at 50k and again this past summer at 110k (5k miles ago). There has been a buzzing noise at idle from under the hood for a week or two. Yesterday, I finally had time to check things over and found the PCV causing the noise. I replaced it and the noise was gone. Would that cause anything to change?
I've had suggestions to clean the IAC -to- fuel pump problems.
I'll be picking a pressure gauge on the way home today (if it will run) to check fuel pressure at the rail. I have a code reader and will also check for codes tonight. The lite has not come on so I may not find one.
Any other thoughts?
Thanks in advance for all and any replies.
E.
So I was shocked this morning when I had trouble starting the truck and keeping it running. It cranks fine and will start but runs rough and won't stay running unless I hold the throttle open a bit. Now once I drove for 5-10 minutes everything was fine for the rest of the way to work.
I put new plugs in it at 50k and again this past summer at 110k (5k miles ago). There has been a buzzing noise at idle from under the hood for a week or two. Yesterday, I finally had time to check things over and found the PCV causing the noise. I replaced it and the noise was gone. Would that cause anything to change?
I've had suggestions to clean the IAC -to- fuel pump problems.
I'll be picking a pressure gauge on the way home today (if it will run) to check fuel pressure at the rail. I have a code reader and will also check for codes tonight. The lite has not come on so I may not find one.
Any other thoughts?
Thanks in advance for all and any replies.
E.
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Junior User
Joined: Mar 2003
Posts: 55
Likes: 1
Worked on my truck last night.
Checked fuel pressure..Good
Checked for codes.. None
Checked for dirty/bad fuel.. Ok
Pulled IAC, dirty but not bad, internal parts not stuck, for $39 I replaced it anyway along with a new fuel filer just for good measure. I also pulled the throttle body off and gave it a good cleaning. Lots of crud behind the plate.
Once all back together.. it starts right up and no stalling. Fixed!
To Joe Finn & KingRanchMan that said it was the IAC, you were right on target. So treat yourself to a nice lunch today.
Thanks
E.
Checked fuel pressure..Good
Checked for codes.. None
Checked for dirty/bad fuel.. Ok
Pulled IAC, dirty but not bad, internal parts not stuck, for $39 I replaced it anyway along with a new fuel filer just for good measure. I also pulled the throttle body off and gave it a good cleaning. Lots of crud behind the plate.
Once all back together.. it starts right up and no stalling. Fixed!
To Joe Finn & KingRanchMan that said it was the IAC, you were right on target. So treat yourself to a nice lunch today.
Thanks
E.
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