Ford F-150 (2004-2008) :: 2006 - Misfire When Truck Is In Overdrive
Jan 13, 2015
I have a 2006 F150 5.4L 3V with 105,000 miles on it. Recently, it has developed a misfire that is progressively getting worse. It happens when the truck is in overdrive, with engine RPM between about 1200 to 1800. Cruising at this RPM the truck runs great. If I increase the throttle, I develop a pronounced misfire. Once the truck down shifts out of OD and engine RPM exceeds 2000 RPM the misfire goes away. I have never had the CEL light come on during any of these events. The truck has the original plugs in it AFIK. I have not changed them.
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I just bought a 2007 f150 4x4 5.4 triton with 69 thousand miles less than a month ago. Since then the transmission has been rebuild but come to find out a misfire will cause overdrive to act up, and it just recently started misfiring badly. It was throwing a code. 2 coils were replaced and still misfiring. It's not throwing a code anymore. No check engine light flashing or nothing.
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I just bought a 2007 fx 4 with 116000 miles it has the triton 5.4. I know I test drove it good etc well I am out of town with work right now and drive it on a 400 mile trip and noticed that when you are in overdrive and going up a small incline it acts like the truck is locking up, if i get on the gas a lil and make it shift it stops.
The truck shifts smooth and everything on this truck is tight no clunks or nothing. Ihope its not the transmission and sometimes after putting it in park and idling and turnings steering wheel it will start idling really rough . What could this be only does it speeds 50-57 like i said if i make it shift it stops....
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I have an 06 Lincoln MK LT with 147K miles. Just recently when it went into overdrive it was like I shifted into neutral. Pushed the overdrive off button and it drove just fine although no 3rd gear (overdrive). what do I need to do here other than paying for new tranny.
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06 with 5.4 and AT. It shudders in overdrive during light to no acceleration. I was told it was the converter. I was also told by a technician in a trans shop that the Trans-X additive for hypoid oil in a posi-trac was ok to use even though the back of the tube says "Not safe for automatic transmissions". Do this is accurate or if the guy was just blowing smoke?
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On my 2006 Ford F150 2WD, v6 automatic, the overdrive dash lamp is blinking, I get a engine light and the code I get is a P0743. That indicates the solenoid or wiring is bad, but everything works just fine. The transmission is running fine, clear fluid - no odor. The overdrive works and the truck shifts like new. When I start, the "OD-OFF" light immediately starts blinking and never changes. I can activate the OD normally and it doesn't effect the blinking light.
Where to start? I suspect that since all is functioning well, the issue is with the signal to the ecm? By the way, I can clear the code so that the engine light goes off, but the "OD-OFF" light remains blinking.
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2006 ford f150... Mine started out as a misfire problem which I first changed the plugs. I followed the Ford TSB and got all 8 plugs out with no problems. Still misfiring and setting a code for bank 1 catalytic converter inefficiency bank 1. By the way bank 1 is passenger side. After changing bank 2 because the guy at Advance auto said bank 1 was drivers side. Still setting misfire codes and for bank 1 cat. ineff.
So after installing new coil packs and 2 injectors, Still misfiring #3 and #1 and cat. ineff. bank 1. Decided to buy my own code reader, which is a must if you are going to try to work on these new vehicles. Decided to unplug o2 sensor to see where bank 1 really was. Thats when I found out bank 1 was indeed passengers side. Changed o2 sensors. Still misfiring. Decided to buy the true bank 1 cat converter.
Dropped old bank 1 cat and found all of the internal workings all broke up and clogging converter. Truck runs like new. I spent 178.00 for bank 1 converter at pep boys. After spending O approx. 600 in other parts that didnt fix it. I think the spark plugs not being changed until 115000 miles caused the converter to go bad. Buy a code reader and it makes it a whole lot easier to diagnose your problem yourself. and save a whole lot of money throwing new parts at it.
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I have a 2006 5.4L F150. I am encountering a misfire on the #3 plug. The only OBD error messages I receive are from misfire on #3, no other faults.
I have checked the plug, and it looks pretty good. I have recently changed all COPs. I have removed the injector rail and checked and cleaned all injectors. I have removed the wire connector from COPs and checked the voltage while the vehicle is running.
The #3 connector is measuring around 13.6V ... The other COP connectors I measure 0.17V to 0.4V ....
It appears this low volt reading is due to the neg signal wire closing and opening. I brought it in to a mechanic and he indicated the computer needs to be replaced, no signal was getting to COP. So this appears where I am at.
I have hence gotten a LED test light and verified the other COP connector wires cause the test light to flash, while the #3 COP wire connection to just stay on all the time, no blink signal. What the problem is?
The engine sounds pretty good, maybe a slight tick sound. But the misfire wobble is apparent. I figure I will change the computer at this point, since it appears this is where the issue is.
What else could interfere with the COP neg signal? It is pretty clean in the engine compartment, and no visible problems with the wires fraying on the accumulator, as I have read reports happening.
Is it the cam that makes this negative signal wire open and close?
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For some time I have known the coils are going bad and cause occasional misfires but recently something new is added. Backfires and balking down to not moving. codes were po307 po300po430. the reader tells me the likely cause would be the vct solenoids. Also they offer a set of 8 coils at autozone with lifetime guarantee. Are these any good? I have read on here to beware of cheep coils. 2006 f150 5.4 miles is 119,000 have not changed spark plugs yet.
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I have a 2006 F150 with a cylinder #1 misfire only code p0301. I have done new spark plugs, new coil packs, and new fuel injector on cylinder #1 with no luck. What to do next?
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Friend has a 2006 with the 4.6 motor. From time to time he gets a random misfire code ( I think its 0316).. He claims it will only do it when the gas tank is less that half full. I don't see any correlation between fuel level and the code. I am going to check fuel trim values, etc, when the code is set, this weekend.... all I can assume is low fuel pressure which sets the code... Any problem with the pressure module or fuel pump / discharge hose that is related to low level in the tank ?
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I have a 2006 Lincoln Mark LT that seems to have an intermittent misfire. The truck is not throwing any codes either.
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i just picked up an 06 f150 with 5.4l 4x4 xlt package. Love the truck as it is my 1st Ford HOWEVER..... the truck is running super rough at idle and keep getting code for cylinder 5 misfire and bank 2 lean (which i am assuming is from cyl 5). here is what i have done so far...
New Coil packs
New spark plugs
New fuel module
New fuel injector on cyl 5
Still has a "stumble" when accelerating around 45 mph and shows code for cyl 5 misfire then will then throw code for bank 2 lean.
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I am perfectly capable of doing the repairs just short on time. the only shop in town is booked out 2 weeks, i need my truck sooner. 2006 f150 5.4v 3v 168k. I bought it with 150k and it was clean and ford maintained from the original owner. for a while it has been fluttering from time to time during acceleration. last week it started shuttering and missing around 45 trying to accel. no cel. I've read and actually fixed my freinds 08 but replacing cop and plugs. I bought motorcraft plugs and granatelli coils. friday morning it didn't want to start, cranked for a bit then locked up, as if hydrolocked.
I let it sit 5 minutes then cranked again and it fired but hesitating and missing like never before. anything passed 3k rpm it ran good no load. i had to drive it and it doesnt want to shift properly, revving way past normal shift points. smoking alot more than normal. hard to tell being 5 degrees out. finally got some codes. bank 2 sensor 1 stuck rich 4 times lean twice. Saturday i changed the oil plugs. and coils plugs were not original but were worn enough to visually see. all of the passenger plugs were a nice brown color. all of the driver side were jet black of carbon which follows the o2 cel. i reset it with my glorifed code buddy and it took a while if at all to come back. so im thinking not an o2 sensor????
It runs rough and will stall from time to time, I am to the point where i wont drive it. i will be replacing the camshaft sensors and vct solenoids tonight, and that one 2 if i have time. from what I've read phazers will cause a rough idle but once under load at least have some performance. when i accel it the rpms stall out before a shift i cant get anymore power, say wont got over 3200rpm. when chains and guides need to be replaced whats the symptoms??
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We've got a 2006 F150 with a 5.4 in it. One of the new kids was told to change the spark plugs, then when I went to start the truck the next day it was missing bad. Plugged in the Ford IDS, number 7 cylinder is dead. Only codes are for that cylinder misfire, and random miss on startup. So, I double checked the kids work and it was all fine. Tried putting a new plug in, didn't work. Moved the coil to a different cylinder to see if the miss would jump, stayed on number 7.
Used a noid light to verify COP harness was working, and it was. Put a new coil on it anyway since I had one, still missing. Used noid light to verify signal going to injector for the cylinder. Signal was good, replaced the injector for the cylinder. Still misfiring. Ran a compression test and the cylinder has good compression. The threads for the plug are fine, not cross threaded or torn out. The only thing I can think is that the PCM has gone bad in a way that its firing the injector/COP, but doing so at the wrong time some how.
Every other cylinder is running fine, O2 sensors fine. PCM isn't trimming anything back to account for anything, and if it was it would do it to multiple cylinders to keep the engine balanced. Cant think of any more tests, and I don't believe there is anyway that the airflow could be restricted to only 1 cylinder, but I could be wrong. Wanna try and solve this to keep from sending it to the dealer.
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Have an 06 F150 5.4 3v with no power. spark knock. rough idle. wants to die while driving, and random misfire code. Have replaced fuel pump, filter, coils and plugs. What to check next? Already thought of EGR - it doesn't have one.
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I've got an 06 F150, 5.4l crew cab lariat. So to start, I had a programmer screw up my ECU, so when I got it re programmed at ford, everything works except for the ABS sensors. I recently had someone break into my truck and broke my stereo when they couldn't get it out. So I was driving home from work the other day and lost my whole instrument cluster, windows wouldn't roll up or down, wipers worked very slowly until not at all. shut off the truck and wouldn't restart. I jumped it and started it. ran fine. with the exception of the previous problems. I noticed when it got dark out that my my taillights and head lights were on very dimly with the switch off. Also hearing a clicking sound coming from under the truck, at the back of the cab and front of the bed. the only thing electric that's back there is the fuel pump (i believe). I am at a complete loss.
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i need a serpentine diagram of my truck in order to place it back on.
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I need to change my plugs in my 06 5.4 122,000 miles truck is bucking and not right under acceleration but its my only transportation to work and I am afraid of breaking a plug and then having no clue what to do after that. Need input on making the plugs come out easier ...
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I just went out to move my truck to take out garbage and it cranks but doesn't start. It is 4.6L 4WD. I sprayed ether in intake no change. Checked all fuses all good. It has been raining pretty hard the last 3 days and it has been sitting in rain all 3 days. I checked for codes with a simple code scanner no codes. But the code scanner I used is not able to do KOEO or KOER tests. I know it needs new plugs but it has never sputtered or died on me. Has slight misfire but not engine stopping. I havnt had any check engine lights or problems before.
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I have a 2006 F150 4x4 5.4. For a long time it idled poorly and would take 2 trys to start. Today it started shuddering and the engine light came on. The engine light went off but it still runs rough and smells of gas from the exhaust. It is not very drivable and I can't afford to take it in. I have lots of mechanical experience but not with this electronic junk and need diagnosing the problem. I have a code tester and this is what it said.
P0301 Cyl 1 Miss
P0304 Cyl 4 Miss
P0300 Random Multiple Misfire Detected
P2196 O2 Sensor Signal
Biased/ Stuck Rich
Bank 1 Sensor 1
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