2001 5.4 running rough
Thread Starter
|
New User
Joined: Feb 2010
Posts: 1
Likes: 0
2001 5.4 running rough
Ok, pls help me go through this methodically and as inexpensively as
possible. Have 01 250 5.4 with 154,000. I bought it used and have no idea what has been done to it, but I think they took decent care of it. I have been driving it a little every weekend and it has been running great. I let it set for the last 3 weeks and now it is running very rough. It had about 1/2 a tank of gas and i am wondering if it build condensation or something. I changed the fuel filter myself and it didn't seem to change anything. There is no check engine light on and the only pattern I can figure out is that it is most noticeable less than 2000 RPM(s). This is a weekend truck and i really don't want to start dropping any more money into than I have to. I want to work toward a complete tune up and things like that, just right now trying to see what I can do myself to improve the situation. My skill level is about medium. Thanks in advance. Please ask me questions if this makes no sense.
possible. Have 01 250 5.4 with 154,000. I bought it used and have no idea what has been done to it, but I think they took decent care of it. I have been driving it a little every weekend and it has been running great. I let it set for the last 3 weeks and now it is running very rough. It had about 1/2 a tank of gas and i am wondering if it build condensation or something. I changed the fuel filter myself and it didn't seem to change anything. There is no check engine light on and the only pattern I can figure out is that it is most noticeable less than 2000 RPM(s). This is a weekend truck and i really don't want to start dropping any more money into than I have to. I want to work toward a complete tune up and things like that, just right now trying to see what I can do myself to improve the situation. My skill level is about medium. Thanks in advance. Please ask me questions if this makes no sense.
Elder User
Joined: Dec 2007
Posts: 784
Likes: 1
From: White Rock BC Canaduh
Rat,
Have you washed the engine lately or drove through deep water or big puddles?
If you have then you might want to check the plug holes/tunnels for moisture.
Take each coil off one at a time and carefully check for even the slightest signs of moisture on the plug boots (the long rubber boots will pull out with the coils). Try to also look into each plug hole/tunnel for signs of moisture.
If you see ANY signs of moisture (even if trace amounts) blow the holes out with a compressor and blower tip and clean up the boots.
Even if you find no signs of moisture it's a good time clean the plug holes and boots and add some fresh dielectric grease to the bottom of the boot sleeves and the top of the boots where they seat to the head.
Rick...
Have you washed the engine lately or drove through deep water or big puddles?
If you have then you might want to check the plug holes/tunnels for moisture.
Take each coil off one at a time and carefully check for even the slightest signs of moisture on the plug boots (the long rubber boots will pull out with the coils). Try to also look into each plug hole/tunnel for signs of moisture.
If you see ANY signs of moisture (even if trace amounts) blow the holes out with a compressor and blower tip and clean up the boots.
Even if you find no signs of moisture it's a good time clean the plug holes and boots and add some fresh dielectric grease to the bottom of the boot sleeves and the top of the boots where they seat to the head.
Rick...
Last edited by _Rick_; Feb 13, 2010 at 06:48 PM. Reason: added more info
Senior User
Joined: Feb 2010
Posts: 226
Likes: 1
From: TX
rough running
I concur with the above.
Also...
Do you notice any ticking sounds at idle or anything abnormal?
If yes, this indicates that you have a blown spark plug.
Literally......it has blown right out of the hole or loosened.
(Common happening with all modular Fords with 2V heads.
This was Fords gift to their customers from the engineers.)
Otherwise, you can also go over to Autozone and have them
run a diagnostic check for free. They will print you out a
general description of the problem and you can go from there.
Most of the time though, this problem is usually caused by a
faulty coil on the plug, dirty intake sensors, or a dirty injector.
In that order of likeliness.
You would however, benefit from doing a total and complete
tuneup as soon as possible.
Air & fuel filters, PCV valve, oil and filter, (replace all of your
sensors at this mileage level)O2 & other maintenance ones,
coolant, thermostat, belts, hoses, etc.
Also...
Do you notice any ticking sounds at idle or anything abnormal?
If yes, this indicates that you have a blown spark plug.
Literally......it has blown right out of the hole or loosened.
(Common happening with all modular Fords with 2V heads.This was Fords gift to their customers from the engineers.)
Otherwise, you can also go over to Autozone and have them
run a diagnostic check for free. They will print you out a
general description of the problem and you can go from there.
Most of the time though, this problem is usually caused by a
faulty coil on the plug, dirty intake sensors, or a dirty injector.
In that order of likeliness.
You would however, benefit from doing a total and complete tuneup as soon as possible.
Air & fuel filters, PCV valve, oil and filter, (replace all of your
sensors at this mileage level)O2 & other maintenance ones,
coolant, thermostat, belts, hoses, etc.
Hi there
Junior User
Joined: Aug 2010
Posts: 79
Likes: 0
Same as what happened to me. Bought a high mileage,01 f250sd and it started to stumble and miss at lower rpms. Slowly, the stumble and miss started to rise up the rpm band. One bad coil, several bad boots, all plugs were toast, most actually missing the electrodes and tips!
All replaced and good to go. Didnt know a thing about blown plugs at the time. Take care and follow all torque specs and use anti-sieze on the threads.
All replaced and good to go. Didnt know a thing about blown plugs at the time. Take care and follow all torque specs and use anti-sieze on the threads.
Thread
Thread Starter
Forum
Replies
Last Post
nasty_nate_
1987 - 1996 F150 & Larger F-Series Trucks
9
May 10, 2013 07:28 AM
suff1cate
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
86
Jun 15, 2009 07:57 PM
dr cabela
1997 - 2006 Expedition & Navigator
3
Oct 12, 2007 09:56 AM
