Ford Super Duty (1999-2016) :: Misfire On Cylinder 2 / Choppy Sound In The Exhaust
Mar 28, 2013
I have a 99 ford super duty with a 5.4 triton that is having a troublesome misfire. When you first fire it up it has a bit of a stutter then runs relatively smooth but the engine does still have a small shake to it and you can hear a bit of a choppy sound in the exhaust. Not completely smooth. When you drive it light footed it seems to run perfectly smooth and nice. But if you go past half throttle (sometimes you can go past that point) it starts to cough and is very slow at picking up.
When you reach between 3,250 and 4,500rpm the coughing stops. But the pick up is a little surgy, not steady. It was doing this for a while before the engine light came on. I got it scanned and it showed a miss fire on cylinder two so I have replaced the spark plug, coil, and injector but still the same issue. I opened up the catalytic converter to see if it was plugged up. Nothing there.
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I have a 2002 F250 5.4 L with an intermittent Misfire. A little history on the truck in 2011 I replaced the motor with a Ford long block motor, only the block, I used my electronics, intake, etc, this was brand new from Ford. The truck has a total of over 300K miles. Recently it has developed an intermittent misfire. I have changed all the coils and plugs and the misfire is still present. The codes are showing a misfire in cylinder 3 but could be 4 too. The misfire is intermittent because this morning I changed the plugs and truck ran fine, drove to store and it started missing, turned truck off and started up and ran fine again. It has been doing this off and on for a few weeks.
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I have a 2001 F 350 with a V10 it keeps coming back as a misfire on cylinder 3 and 4.. I replaced all of the coils and plugs and pigtails I have even swapped out the coil packs from side to side and I still keep coming back with the same code. The truck has a bad check around 1500 RPM with a load on the motor mainly doesn't in overdrive and first starting off...
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my 03 f250 has a 5.4 and i cant seem to get rid of a misfire in cylinder 3. i had a p0353 code but that no longer shows up. i replaced all the coils with Accel coils, replaced the plugs with motorcraft platinum. i have checked the wire all the way back to the PCM and it checks out. i replaced the pcm with one that has been reprogrammed. i have swapped the injector and coil with another position and still get misfire at #3. Replaced the coil connector with a new one. I have good fuel pressure. I no longer get the code but the misfire is still there, unplug the coil and injector while running and no change. Unplug a different cylinder and you can tell the change. I checked compression and its good. I am lost here!!!!
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I bought this 2004 V10 Ford truck new.. It was at that time top of the line Ranch King with all the bells and whistles.. I have been trying for some time to figure out the miss I have. I was told yesterday that.. Misfire 2nd cylinder passenger side no compression.. They said I need to have a new Engine installed.. They would look for a rebuilt and would cost with installation around 5 grand.. I then took it to another garage and was told that's not it, but will check it out later in the week.. What I should look for.. No one seems to b able to figure it out.. I cannot afford a new truck at this time and 5 grand for this one to fix is not a reality..
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My 5.4 F250 with 200,000 miles having many problems... It all started a few months ago, when the cam needed to be replaced, and a cam phaser was also replaced at the same time. It ran fine after, then threw a code for cylinder 3 misfire. The guy I took it to said it was due to the huge crack in the exhaust manifold and that was messing with the o2 sensor coming up as a cylinder 3 misfire. So, got the new manifold and it was good for a few weeks.
Now, starting the other night, Friday the 13th, it threw a CEL when I was coming into the driveway. It had been throwing a code every once in a while, and I brought it to school to scan it Friday the 13th but there was no code. So, I assume that it is an intermittent problem, no big deal. When I go to get in my truck to go to work a few hours later, the 5.4 cranks... and cranks... and cranks.
I get it to fire up, and it dies again. Run codes, and it says that the cam positioning sensor is broken. Replace both of them, still acts up ie. doesn't start when it does start it runs very rough and stalls. Get it up to my uncles shop, and replace fuel filter.. Still runs like trash. Run codes now, and it says rich/lean in bank 1.. My uncle tells me to move my truck out of the shop, so I start it up, and it runs great. No hiccups, it idles perfect as I move his truck out of the shop first.
I park my truck outside and let it idle for about 10 mins, and when I come back out it is still idling, perfectly fine. I get in, put it in reverse, and get about 20 feet when it dies and will no longer start back up. What could be going wrong?! Sick of throwing money into this thing! At one time while started up in my uncles shop, it was blowing black smoke, as if it was a diesel!
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My dads truck started misfiring last week, first thing i did was scan the codes and got p0303, p0304, p0305, p0306, and p0308. Its an 08 F-350 5.4...already changed out the spark plugs and the same codes came back. I decided to do some further testing and so far all coils had spark as well as 12.4 volts going to each. I did check the switching signal and that was present as well.
Moved on to the injectors and i checked each connector with my noid lights and it flashed on all cylinders. Did a resistance check on each injector and they all registered 12.4 ohms. We did switch some coils around and all the same cylinders misfire. My next step is to do a compression test.
My biggest question is if there are any common problems with these engines besides the coils, by the way this truck has the brown coil boots and the spark plugs that dont break in the engine.
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Truck Specs:
2008 f250 super duty 5.4l
78xxx miles
4x4
Automatic
Issue:
P0300 (random misfire detected)
P0307 (cylinder 7 misfire)
Let's start from the beginning...
I was getting the notorious 5.4l ticking sound. After doing research on this issue. I found that it could be a few different issues including:
Cam Phasers
VCT solenoid(s)
Loud injectors
Valves
Exhaust leak
Loose spark plug
The list could possibly go on, but these being top concerns or issues to look into.
I took it to my mechanic and wanted him to research the ticking problem. This was my primary concern due to it was getting worse over time. I didn't want to do more damage than what was possibly already done. I told him to go ahead and change the spark plugs while you're checking into what's going on. (I know those plugs can break and I didn't want to do that.)
At any rate... the plugs got changed to motocraft brand (I know the trucks can be finicky with the parts you put back into them so I went with the motocrafts to avoid any complications.) After the plugs were changed, he told me that the ticking was caused from a blown exhaust manifold gasket (yay me... not internal parts or anything too serious. Sweet!)
I had to reschedule to get the gasket done, but knowing what it was now I wasn't too concerned about driving it. So I did. The new plugs are also in the truck at this time. I drove it the next day and right away.. I noticed a misfire. Thought maybe the plug was bad. I told my mechanic about it and he said... Sounds like a COP to me.
So I get a new COP. Okay.. easy fix. Installed it and still got a misfire. Told my mechanic and he said get another COP. So I'm thinking.. "Okay.. get a new part to fix a new part.. sounds logical.. lol" so I do what he thinks might be best. I replace the COP with another new one and it's still misfiring. The new cops are also motocraft brand as well.
Okay... next step.. he claims it may be a VCT solenoid issue. At this point I don't care.. I just want my truck fixed. So he replaces the driver side solenoid. Still misfiring..
So after doing some research on the scanner... we locate some issues that are the exact symptoms I'm having. Misfire.. at low rpm.. during cruise control.. and a sudden at idle.
This information states for this drivability issue.. to spray injector cleaner/carb cleaner into the engine and possibly clean it out. Makes sense. He did this as well as changed the fuel filter. Also did a pressure test on the injectors to make sure they were good. They were. After spraying and cleaning it out, it was taken for a test drive and it seemed okay... but not perfect. The next day.. the misfire came back.
He said that if the misfire returns, that I need to contact the dealership and see if there is a pcm update. The dealership said there probably is but can't tell me until the computer is hooked up to it. (Of course there is a charge when it's hooked up) again.. whatever.. I just want it fixed. The truck is scheduled to go in next Wednesday for that. If that doesn't fix it, my mechanic said cam phasers possibly bUT still not sure for sure..
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After replacing most of the underside of my Super Duty, Complete front end, backing plates, brakes, rotors and shocks, I have a misfire code on cylinder #4. I replaced the plugs, cleaned the MAS and filter and rotated the coil to cylinder #1. Still have a misfire on #4 and noticed the coolant slightly low and some condensation on the oil cap. Could this be the intake gasket? My mechanic is away for 2 weeks and I think the price at the dealer will kill me. I have 63K on the truck, don't tow and plow mostly family members. It's getting a little rusty but is still in good shape.
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I'm getting a really choppy low RPM drive. If I'm above 2-2.5k rpm it runs okay but as soon as it drops under 2.5k it starts to run very choppy and loses power and Boggs in and out of power regardless of how much throttle input I give it. I had a tune up done last year and a recent oil change...
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My 2000 F-250 6.8L V10 has a choppy idle during the first 30 or so seconds after a cold start up in the morning then it smooths out and drives perfectly. If I were to place the truck in gear during the choppy idle, it would not die and throttle response would be fine.
I cleaned the MAF sensor and checked the PCV elbow for cracks (no cracks). It idles at about a 1000 rpm during a cold startup then drops to about 750 rpm according to the dash tachometer. The truck has 187,000 miles on it.
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How will a muffler delete on stock exhaust sound? I don't want to remove the cat because I don't want it to be too loud. I want it to sound good but not too much whistle (considering my truck is a 2003 the whistle would be very loud) Should I just to a delete pipe on the stock exhaust, or do a cat-back 4 inch straight pipe? what will sound better? Also doing the cat back exhaust will cost a lot more.. but is it worth it? What I should do.
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Is it common for the exhaust to have a periodic high pitch tinny sound?
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Here's a link to a video where you can hear what I'm describing. The noise is most noticeable around the start (first 18 seconds) and the end of the video when I'm closest to the exhaust pipe:
YouTube ....
You may need headphones to hear it, but the engine seems to be making a bit of a puffing sound during idle. It happens completely randomly and I'm not quite sure what could be causing it.
Aside from this noise, the engine seems to idle normally, and the check engine light isn't on. I had all of the injectors out a few weeks ago for cleaning. They all appear to be working fine. I also cleaned the throttle body at that same time and ensured there were no obstructions for the air intake and filter.
What might be causing this sound? 1999 Ford F250 Super Duty 5.4L
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Did I just blow up my turbo or what? I'm kinda new to diesels, I just purchaced a 2005 F-250. Today I was pulling my rv out of Devils Den State Park in Arkansas, beautiful place. There is a steep grade coming out, my truck was seeming to be having a kind of hard time, then a loud PFFTTTT sound. That is the best I can do for writing sounds. It sounded like a compressed gas cylinder blowing up! The pulling power went to nothing and the turbo gauge went to 0. It sounded fine at idle, other gauges were fine. I'm guessing my turbo is DEAD, what say you?
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I have a 2002 F350 with the triton 5.4. For the last week it has been running like crap. I just did my plugs about a month ago. I don't know if it's a miss fire or bad fuel or I don't know what it could be. It's a popping sound coming from my exhaust and when it happens I lose power. It happens off and on. One second it will run fine and normal and the next runs bad. What it could be. Today I just changed my fuel filter and added STP octane boost and fuel injector cleaner. Haven't seen a difference yet.
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Is there truely no cure for exhaust flutter on a 2002 f250 V10, bedsides putting on headers??? I have the the sound at shift points around 1800-2200 rpms. Sounds great before and after these points....
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The exhaust system from the downpipe back was stolen off this auction truck I bought, so I bought an even worse truck for parts but I'm struggling to get the exhaust off. Is there a trick to it? Does it come out going forward over the rear axle or pull out from the back? Should I just cut it and have a shop weld it back?
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I have no compression on #4 cylinder. Is there any way to check the cylinder for damage. So I can just replace that piston if it's good?
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I am new to Super Dutys but i love them! Altho mine is not being so nice. It has the 5.4 in it. When its idling it has a stumble to its idle with a pop every now and then out the exhaust. It revs fine when its first started. If i pull out on to the road and start away easy its ok a slight miss but if i put the throttle down its just falls on its face. But if i get it up to cruising speed its ok as well. But even at cruising speed more then 1/8 throttle and it starts missing and falling on its face. What it could be? It smells like its running lean as well.
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I own a 2001 F250, I bought a skid steer that weights 7000lbs and got a trailer that is 14,000lbs.
The truck was running fine, today was the first day I used it and I noticed by the end of the day I have oil dripping from my exhaust.
The dealership told me that the f250 is able to town that much weight, what caused it, as well as is it safe to continue to tow with it?
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