hey guys,

i am having this problem with my 2000 expo 5.4L EB. i have about 27k on it and i just started having these problems. i have noticed that after the truck has warmed up after about 25 to 30 minutes i get a horrible sputtering on acceleration and a rough surging idle. i took it into the dealer and they could not reproduce the problem. so i said to the service writer that if i get the problem to occur can i take a service tech for a ride. he said sure. so i then drove it around for a about 20 minutes and the same problems can back. so i took it back to the dealer and got a guy to take a ride with me. as soon as i put the truck in gear the tech said it feels like it is running on 7 cyl. so i continued on the ride and he said this is a big issue. i went back to the dealer and he took the truck around to his bay and hooked the thingy up the the computer and there were no codes or any other problems. so he then said to me that he has no idea what the problem would be but they will figure it out and fix it. so i left it at the dealer and now i am lucky to be driving a 2000 focus 2 door in a nice bright blue color. typical considering i spent $40k on this truck and i paid cash. but at least i have a loaner and the dealer knows that there is a issue. i will keep everyone updated on my issue.

------------------
Later,
Scott Schintzius
extremecj@earthlink.net
2000 Ford Expedition Gibson Headers, GMS Mass Airflow Sensor, AirRaid intake, Jet-Hotted Magnaflow exhaust, 265/70R17 BFG AT/KO's, 20% Tint on all windows, PIAA Air Damn, PIAA 510's, PIAA 80's, PIAA 1400's, 3 JL W3 12's Rockford 800a4 and 800a2, MBQuart 6.5 inch components, Eclipse 5.25 components, Etc.
1983 CJ-7 Extreme CJ ZZ4 Crate 350, Ford T-18 Tranny, Atlas 2 3.8, Reverse Cut Dana 60 rear, Dana 44 Front, 6 point cage, Bilstein 7100 Remote resevoir Shocks, 38.5x14.5 SX's on 15x10 Trailready Beadlocks

 

Sorry to hear that you have the problem, Hope you get it fixed, Mine has been at the dealer 4 times, parts replaced and still has the intermitted rough idle. Let us know your outcome.

------------------
Don W
97 F150 4X4 XLT, ORP, Tow Package,
CD-Changer, K&N, B&M shift improver,
PIAA fog lights, Weld Rims 17", 265 70LT AT/S, Flowmaster 40 series 3" cat back.
f1504x4.hompeage.com

 

My rough idle -- and most here is just that -- a problem at IDLE ONLY--- no probs while up at moving speeds or acceleration -- also mine was present from the day I took the truck -- new. Although serious your problem and most here -- Idle only probs -- are different

------------------
99 F-150 XLT 4X4, SC, SB, AT, 5.4, Single CD
3.55LS, Tow pkg, Rhino Liner, Sportsman topper,
Westin black double step bars, Custom gold pinstripe, Bright Red/Gold,
Honeycomb grille painted to match truck, Gold front valance and rear bumper covers (both from Eddie Bauer
Expys)

 

I am wondering how wide spread and how much of a problem this rough idling is. I have never owned a Ford, but love the 150 look. I am seriously wanting to order one but this site has a lot of info, some like this rough idle and the 5.4 engine oil leak is scaring me a bit. I have never had much problems with my G.M.'s over last 28 years. I realize there are million's of 150's out there but, any info is appreciated. Markmizzou I hope you get your truck fixed I am watching your sit. closely any opinions let me know. I will check out Calif. Ford I had heard that they where very good to deal with.

 

I went to a dealer and drove a 2000 F150 with a 4.6L, Idle was ver smooth. I took it for a test drive and let it idle while the salesman got some information, Idle for 5 minutes and was fine. Mine does it mostly when I am in trafic and made to idle for a few minutes, it starts rough and gets worse, then goes away and idle smooth, I dont see any change in the tach.

Very anoying. I started a web site for owners with this problem to add there names too. if you are interested be added to a list check it out.

home.pacbell.net/donw35/f150


------------------
Don W
97 F150 4X4 XLT, ORP, Tow Package,
CD-Changer, K&N, B&M shift improver,
PIAA fog lights, Weld Rims 17", 265 70LT AT/S, Flowmaster 40 series 3" cat back.
f1504x4.hompeage.com


[This message has been edited by DonW (edited 03-05-2001).]

[This message has been edited by DonW (edited 03-05-2001).]

 

Has anyone with the rough idle had ford replace the injectors? I don't think everyones problem is the same cause but if you drive it off the lot or when weather is cool the spray pattern of the injector can cause a rough idle and would be more noticeable the colder the air is cause the fuel doesn't mix as well. If the nozzle has a burr or nick in the end it will cause it to drip instead of spray.An in car injector
test won't show the spray pattern and ford probably doesn't want to pay a dealership to pull all the injectors and replace them all. The labor would be a lot and the dealerships
probably don't have a tester to hook them to so they can watch them spray.However I would
think a power balance test should show a weaker cylinder or cylinders,but it might be so slight that the graph won't show it.
Actually I don't know squat but am a little
concerned as I have a 2000 f150 an an 01 expy
Maybe some of you can get a power balance test done and get them to give you a printout
and then post it. Good Luck Everyone

 

fixit76710,
that's an interesting point. Are you aware of any aftermarket injectors designed to improve performance? I wonder if there is a connection between the rough idle, and poor gas mileage. Maybe as you say, bad injectors are the problem. That would explain lower gas mileage and possibly a rough idle. I've had a stumble at idle since day one ... almost like having an aggressive cam. As soon as I take off though, the engine is as smooth as can be, but I get 13mpg consistently. Maybe an injector upgrade is in order.


------------------
'00 5.4L AUTO 4X4 Lariat (Black/Silver)
'02 F-350 PSD CC DRW 6SPD 4X4 Lariat (order this year)
www.hawthorn-engineering.com

 

Friends,

Through all of this, I think I can (have)
given Ford every possible symptom that I can.
Do they listen to the symptoms -- maybe for a few minutes -- till they get hooked up to their diagnostic computer. at this time they seem to become "brainwashed" to the idea "that if their diagnostics don't show the problem, then there is nothing wrong"!!

Whatever happened to real troubleshooting and
a honest effort to fix the problem? They really need to think how the engine works, and
with the symptoms I have been giving them for the last 17 months and 18,000 miles-- turn off the damned diagnostic computer -- use their brains, and FIX MY TRUCK !! The problem I have is definitly (read last summers' comments in this thread) temperature related.
I think all I have left in this realm are the O2 sensors and the EGR stuff!!??
DonW, I did bring up the injector idea -- but they said injectors would act the same -- no matter what the temp. If this is false -- more of you friends -- please let me know ASAP.
The second dealer said -- yes they could sense (feel the shakes) the condition -- but again their hands were tied as long as it passed the tests on the diag. tool. they could not change out a thing, since it passed all their tests!! I guess Ford has never heard of a "borderline bad component", -- one that "just barely passes the tolerances set (by humans) in the test equipment!!
Once again I am up S*&T creek without a paddle!!!
I have called my original dealer back -- talked to the son-in-law of the owner and asked him to talk to the owner - and get back to me as to what THEY are willing to do next. I stated -I really did not think they wanted me calling back every day or so for the next 18 months or 18,000 miles -- he agreed -- I will give them a day or so and see what ideas they come up with!!!
I will let ya'll know-- till then -- still "frustrated in Missouri"

------------------
99 F-150 XLT 4X4, SC, SB, AT, 5.4, Single CD
3.55LS, Tow pkg, Rhino Liner, Sportsman topper,
Westin black double step bars, Custom gold pinstripe, Bright Red/Gold,
Honeycomb grille painted to match truck, Gold front valance and rear bumper covers (both from Eddie Bauer
Expys)

 

I had this problem with my truck. But i also noticed with exhaust and superchip that it idles and runs like a beauty. Might not be what you are looking for but just trying to help.

 

98Lariat,
Thanks for the suggestion! IMHO you did what you wanted to modify your truck, and in the process, you fixed (masked) the symptoms of the rough idle problem.
Great for you! The issue here is that I should not have to add a bunch of modifications to fix (hide) the problem!!
Ford needs to get off their "high horse" -- pull the plug on their diagnostic machine and do some real trouble-shooting and fix the truck I spent more than $25,000.00 for!!

------------------
99 F-150 XLT 4X4, SC, SB, AT, 5.4, Single CD
3.55LS, Tow pkg, Rhino Liner, Sportsman topper,
Westin black double step bars, Custom gold pinstripe, Bright Red/Gold,
Honeycomb grille painted to match truck, Gold front valance and rear bumper covers (both from Eddie Bauer
Expys)

 

Mark,
Has anyone looked into the throttle positioning sensor as being the culprit??

 

Hey Bugman,
Thanks for the suggestion - I will ask the dealer if that has been checked. Of course if this can be checked with the diagnostics, they will say "it's OK" without even looking at it!! Thanks again for the tip!!

------------------
99 F-150 XLT 4X4, SC, SB, AT, 5.4, Single CD
3.55LS, Tow pkg, Rhino Liner, Sportsman topper,
Westin black double step bars, Custom gold pinstripe, Bright Red/Gold,
Honeycomb grille painted to match truck, Gold front valance and rear bumper covers (both from Eddie Bauer
Expys)

 

I have had this problem for a few years on my 97 with the 4.6. I usually have the problem withing the first few miles/stops after start-up, I took it to the dealer and they done plugs, wires and a new PCM and it stopped for about a month. I have tried a few things of my own but haven't got it to stop, the one thing I have been able to accomplish is when it start to idle rough while at a stop I put it in neutral for a few seconds and the engine idles up and after I put it back in gear it is gone.

 

Markmizzou

I'm not alone!!! After reading every post on this subject (new to the sight)I'm convinced we have the exact same problem. Mine started at about 5K and has gotten gradually wores. Happens only after the engin warms up. The easiest way to duplicate for me is to drive it foe 10-15 miles, park it for 10-15 minutes, and then presto -- I'm shaking in my seat. I've had it in to the dealer 4 times. It started out with acknowleging there is a problem, to no codes, to it being explaned as a engin quiver that is charicteristic of the engine. Also, one ticket stated a test drive of a stock 2001 off the lot had similar quiver. They arranged to have the regional Ford rep to take a ride with me. When he showed he refused to take the ride. Instead, he explaned that what I was experiencing was normal. I explaned that if all Ford truck did what mine does, nobody in their right mind would buy one. One thing he did do was to give me free of charge the extended 5yr/75K bumper to bumper warranty. This has kept me quite for a while but very time I get into my truck and the rough idle starts I'm enclined to continue to pursue it. Luckily I came across this web sight. It helps to know what others are tying.

Jwest
2000 F150 XLT 5.4L
13K

 

HELLO EVERYONE,
ITS BEEN AWILE AND I AM STILL HAVING TROUBLE WITH MY IDLE. TRUCK IS GOING BACK TO THE SHOP ON MONDAY FOR ANOTHER ROUND OF NOT GETTING FIXED.(MAYBE)UNLESS I BUY THE F250 I LOOKED AT YESTERDAY. READING OTHER TREADS TELLS ME MANY OTHER PEOPLE HAVE OUR SAME PROBLEM AND THAT IT IS SOME KIND OF ENGINEERING GOOF. SOME TRUCKS HAVE IT AND THE REST DONT. AND THE ONES THAT DONT ALL RUN GOOD AND HAVE EXCELLENT GAS MILAGE. 16MPG OR BETTER. MAYBE WE ALL NEED TO GET TOGETHER SOME HOW AND CONTACT FORD PERSONALLY WITH THE PROBLEM. IF ANYONE KNOWS HOW WE CAN ACCOMPLISH THIS PLEASE TELL US. I WILL GET BACK SOON. GOOD LUCK