Ford Super Duty (1999-2016) :: Rough Idle And Stalls But Runs Fine At Higher RPMs - No Brakes
Oct 13, 2015
Let me start with I have a 2003 f250 5.4. The motor blew on my truck and I had a 100k motor dropped in it. I've put new spark plugs, ohmd out the coils. I tried both sets of injectors. cat delete and new fuel pump. It has rough idle and stalls but runs fine at higher rpms. Also has basically no brakes. I am thinking vacuum but I've check all the lines. No codes either!! also cleaned throttle body.
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I just bought this 99 f250 7.3 Powerstroke last week.. drove it all week fine, I car pool with a family member to work and asked his girlfriend to plug my truck in for me, well she didn't and it had stalled on the way home one morning but started up after cranking a few times i thought nothing of it. Drove it a little bit that day and it was fine, while I let it idle in my drive way as I prepared to go work it started running really rough then died. It took a long time to start again..now it's happening all the time. I changed the fuel filter and someones telling me there's air in the lines..
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This problem has been getting worse over the last 2 years. When the car starts it idles fine at about 1000 RPM. As soon as it warms up, it starts to idle rough, between 500 and 750 RPM. It almost quits running. As soon as you give the car some gas it runs just fine. About 3 weeks ago I got a "Engine Lean" check engine light error. I reset the system and have not gotten the error again. Since then I have: changed the MAF cleaned the EGR (made sure it closes completely and ohm out the coils in the actuator) changed the O2 meter on the exhaust manifold cleaned out the throttle body Ohmed out the air idle controller. What I should check next. I was planning to check the fuel pressure in case it is a fuel system problem. It is a 1999 ....
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Getting these lean codes P1131, P1151, P0171, P0174. I was getting a knock sensor code before but not now. It will not idle it just dies and runs rough till I get at higher rpms gotta feather the brake and gas to go anywhere.
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I have a 2004 SD with 5.4 that is running pretty rough both at idle and driving. Truck shakes a lot at lower rpms. I have a scan tool and had a misfire on cylinder 4 so I replaced the coil and the plug. Also replaced the idle air control valve. Plan on replacing O2 B1 S2. (One of my codes) even after replacing the coil and plug I'm still getting misfire detected from cylinder 4??? Other codes I had were misfire detected on he first 1000 revolutions. That hasn't come back though.
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I have a 03 F250SD with ~145,000 miles on the 5.4L. Just recently I have been having what seems to be a miss, or possibly a dead cylinder. I thought it might be a dirty MAF, but I cleaned it and have the same problem. The miss is more noticeable at the higher RPMs. I am checking the plugs today. So any solution? I refuse to take her to the shop and having another man up in her manifold.
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My truck started running poorly with an intermittent miss about 6000 miles ago. The miss gets more consistent when the tank is below 1/2. Fill it up and the miss goes away. No codes, shop that does a lot of V10 camper work could not figure it out.
My guess is that the fuel pump is going out and it overheats when the tank is low. The problem is getting progressively worse. Now it misses slightly with 3/4 tank and even a full tank sometimes.
Plugs have been changed, fuel filter has been changed, and the shop found 3 COPs that were bad before all this new intermittent miss started. The truck runs ok at wide open throttle.
Am I just nursing a bad fuel pump that will leave me standed soon? Truck has 170,000 mile with original fuel pump.
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2002 F-250 SD V10 Auto Trans 140K miles.....
Engine ran fine until battery died. Vehicle then sat from Nov to May with no battery in it. On start up now after install of new battery, engine initially surged at idle and seemed to miss (run rough) in gear/under load. No CEL or codes. After a single short drive idle and running under load seemed to have improved a bit, but not yet back to what I would call normal.
QUESTIONS:
Is this simply a matter of the computer having to relearn after battery disconnect?
Will driving restore things back to where they were/should be?
How much driving/How far?
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2004 F250 V10, runs good until it warms up whether it's hot or cold outside. While on freeway, it really shakes while cruising, but of you get in the gas enough for a kick down, seems to be pretty smooth. I've changed the coils, and 9 plugs (one wouldn't budge, but the others I took out looked fine) to no effect. Where else should I look? Also, no CEL, and no codes, which seems odd as bad as it feels...
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So, my truck runs really rough when I am @1500 RPM and lightly feather the gas. I have replaced all coils and plugs. Used dielectric grease. Replaced air filter, replaced ICU, changed transmission fluid. The thing still "shudders" ... 2004 f250 5.4 ....
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Have a 2006 F350 5.4l that is mainly used as a plow truck. I drive it at least once a week when not plowing just to make sure it runs ok, etc. Only put on about 2,500 miles per year. Keep it in good repair - not by me, but by the dealer or mechanics.
Problem - last two times I started it, it started ok but runs real rough for about ten seconds. Sounds like the engine is going to die. After about ten seconds, it "catches" and runs normal. Have no problems when driving it. If I restart it, it doesn't do this, so it seems to only happen when the engine is cold.
Battery was brand new back in Sept. All plugs were replaced maybe 3 years ago, as was the cat converter and muffler. Run non-ethanol fuel. What might be causing it before I bring it in.
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2002 f-350 diesel 4x4 7.3l. It stalls out a few times lately( and starts right back up) and it runs rough like there is an air bubble then smooths out. Changed 1 fuel filter and the pcv valve. 96,000 miles.
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I have a 03 250 5.4 with 160k. I just recently replaced #4&3 coil packs. Truck was running great again. Then a few days later the truck was running extremely rough and white smoke from the exhaust. I noticed the pcv valve was not all the way in(pretty much out) put it back in and ran fine for two days now running rough every now and then and the pcv valve is making a vibrating noise but stops if I pinch it slightly. I did replace the plugs a year ago.
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Just changed the oil in my 6.0 and I'm sitting here looking at my tuner and is telling me my idle rpms are about 770.
Before I changed my oil it idled around 750.
It's running fine, I was just wondering why it changed? More pressure to the injectors with the newer oil?
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As a follow up to my problem of intermittent stall and hard start, it is getting more pronounced. Now, every once in a while, it will start. Mostly it will not start.
This morning I connected an OBD2 meter with the key on and engine off. It told me that there are no DTC's. As I was attempting to run enhanced DTC's the code reader lost link with the computer. The connection icon was on but it lost the link. At one point, after several tries, I got the link back but it didn't last too long before it was lost again.
This is the same symptom that I have with running the engine. It will run and then shut off. After a hard start, it will start and run just fine and then shut off again.
My question is this. Can I still have power to the PCM and loose power to the processor? Is there a fuse or relay that could be causing this problem? If not, could the problem be a faulty PCM.
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I recently purchased this 2003 F350 DRW with the 7.3L, automatic trans. Truck has 140k on it. Three times now while the truck has been idling, the engine just died. The first time was a couple of weeks ago when I was pulling out of the driveway. Then again yesterday twice, once while just sitting at a stop sign. Each time it has started right up and ran fine.What is going on here?
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1999 Ford Triton V-10 engine, after changing Oxygen sensors, all vacuum hoses and Mass airflow sensor,(also replaced another sensor but can't think of the name of it right now) now I don't get the codes but engine will start and idle but if I give the engine gas it bogs down and stalls. Vehicle sat in my driveway for 3 months, I got it started and drove it once about 30 miles filled up my gas tank thinking gas could be stale, but now it will not run.
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My F53 motorhome has a rough idle and hard misfire but is not setting any codes. I've put new plugs in it and not change.
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I have a 2000 F250, SuperCab, 5.4 triton, 100,000 miles. It's been a great truck - got it at 63,000 miles. Once engine warms up, it has rough idle, and shift rough. I can give it gas to RPMs up and it smooths out some but is low on power. If this was my 76 F150, I would guess the vacuum hose off the intake manifold to the transmission came loose.
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I've got a 2003 6.0 that's got a rough idle and low power situation. Doesn't matter hot or cold it has a hard start issue but when it finally starts it has a rough idle, sometimes it has low power on take off but not always. FICM has 48.8 volts coming out, exhaust just had a new y-pipe (had a cracked bellow) absolutely no smoke coming out. When I drive it hard it's like a rocket no rough spots just did oil with filters and fuel filters, blue spring upgrade, and cleaned out the turbo.
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V-10 running rough at idle, chugging. a problem has developed with my 2004 E-350 V- 10 after having a new fuel filter installed and the induction service done . Picked it up from a local shop and it was running rough after bringing it in when running great! I figured maybe it fouled a plug or something so I drove it home but it didn't improve so I brought it back and had new plugs installed. It is still running rough and wanting to almost stall when accelerating from a stop and the shop cant figure it out , not showing any codes.
I'm thinking maybe they caused some type of vacuum leak that is so far undetected. The killer is it came to the shop running great !!
No other problems with the vehicle, I drive it every day and have owned since new. 278,000 on it now and it has been the best vehicle I have ever owned.
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