F150 Problems
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F150 Problems
I have a 2000 F150 XLT 5.4, 131k Miles. A few weeks ago I attempted to start it after it had been sitting for about 4 hours. It started up and immediately shut off. Did this about 3 times. I had to keep my foot on the accelerator to get it to stay running. After it kept running it hasn't done it since. Yesterday, I was on the interstate running about 65-70 mph. When I got ready to exit off the interstate, took my foot off the accelerator, it appeared to want to shut off. I pressed accelerator slightly and it felt like it jerked a little and continued on running smoothly. When I slowed down again, it did the same thing. Did this about 3 times. Drove it the rest of the day at slow and high speeds. Hasn't done it since. No check engine light or anything. Is this a sign that the fuel pump is going or could it be the IAC/MAF? Any help is appreciated. If it is the fuel pump what should I expect to pay the dealer to repair. Oh, plugs were repaced by Ford about 8K miles ago. Thanks again.
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Joined: Oct 2006
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From: New Orleans East
have you gone really close to empty recently?? a little over a year ago, i let my 99 f150 go completely empty and the whole week after that i had the same problem.. try some gunmount concentrated fuel injector cleaner or complete fuel system cleaner for trucks and SUVs, maybe replace the fuel filter, some things like that.
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Actually, when I thought about the cleaner I realized that I just ran some through it about 3 months ago. I decided to wait before doing that again and so far it has been doing okay. A couple of weeks ago I was on the interstate and when I slowed down to exit, it acted as though it was going to shut down. I accelerated a little and it hasn't done anything since. guess I am in a wait and see mode. Thanks.
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Thanks. Now when I turn the A/C on it has a somewaht rough idle. It is not a steady idle but the RPM's will kind of go up and down and when I turn the A/C off it idles smoothly. Hopefully it is only the IAC valve. I will change that and see what happens. I have 132K miles on it and my goal is to see if I can get 250K without any major repairs. I know I will have some things go wrong but woud lilke to see if it can make it to 250K. Is that unreasonable for a 2000 5.4 engine? I keep the oil changed every 3000 miles. Thanks again for all replies.
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You don't have to replace the IAC, just clean it. Spray some degreaser or parts cleaner into the two openings a let it sit for a few minutes, drain, rinse and repeat if nessesary. If you put over 100k's already on your engine, it WILL be really dirty.
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I think I replaced it once already, either on my F150 or my wife's expedition. I think there is a gasket that has to be replaced once you remove the IAC, correct? I think I will try to clean it this weekend and see what happens.