2006' screw, 5.4L, 116K miles ... The truck looses power at highway speeds to the point that I need to pull off of the road. When this happens the check engine light is on and the truck is still running but will not accelerate, is it possible the computer is going into limp mode and if so what would cause this?
View 1 RepliesMy 2001 Buick Lesabre 3.8 loses power at highway speeds, sets a PO101 code (MAF sensor). I have replaced the MAF sensor 3 times, as well as the coolant temperature sensor, the crank position sensor, the throttle position sensor, the MAP sensor, the intake manifold gaskets (upper and lower) , the pcv valve, the egr valve, the Idle air control sensor. After cruising at highway speed for about 3 miles the car still loses power for about 20 seconds then gradually regains power only to repeat the fault again 3 or 4 miles down the road.
Otherwise the car has plenty of power quickly achieving 100+ mph going though the gears smoothly and normally. I have inspected the intake plenum and vacuum hoses for leaks and have found none, all in very good condition. The car ha 122,000 miles on it and has been well cared for, very clean under the hood with no leaks. I did reduce the egr chimney size to 3/8" while replacing the intake gaskets and that reduced the symptoms somewhat, i.e., the car only loses about 15 mph instead of dropping to about 25 mph before recovering.
06' 5.4 screw 100K... At 55mph my truck just stopped running, I pulled over to the side of the road and after two trys the truck restarted but ran rough. Auto Zone pulled a code that said replace the throttle position sensor, I did and the same thing happened again two weeks later just as before.
View 3 RepliesI have a 2007 F150 King Ranch Super Crew 5.4 3v and it makes a ticking sound. I have read about the VCT solenoids and the phasers. My issue is that the ticking noise can be heard at Highway speeds. At it seems to be quicker as the engine speed increase. Not sure what to think. No rough idle. What could this be.
View 3 RepliesFirst, details about my truck. 2007 F150 SuperCrew, 2wd, 5.4, 203,xxx miles on it, leveled with Hell Bent Steel 2.5" kit last year, has been aligned professionally since then, tires are good and balanced.
The issue I have is a vibration, kind of the same feeling when driving on a road surface that has had the top level of asphalt removed before it's resurfaced. It's mostly noticable at highway speeds. Its not a violent type vibration, but you can feel it. There is also a sound, similar to tires with a deep off road type tread.
The sound and vibration more noticeable when making lane changes or when wheel turned towards left, at highway speeds, not as much to the right. I've checked front wheel bearings, they are good, zero play, no loose suspension parts, u-joints are good, no leaks anywhere.
Since it makes the noise and vibration a bit more when moving wheel, could it be a power steering pump? The pump is the original.
I have a 2006 f250 6.0. the truck has 101k miles and to this point I have had zero issues. I am having trouble loosing power after running at highway speeds. Once I stop and begin to accelerate the truck looses power for a few seconds ,Belches smoke and begins to operate normally. I had an egr code, so I replaced egr and the problem persist. It is intermittent and does not happen if I stay under 50 mph.
View 12 Replies5.4L... My truck has a momentary moan / growl / bog down issue. It happens at town and highway speeds and usually when I have cruise on OR when I lightly apply the gas peddle. It moans for a few seconds and seems to bog down then comes out of it and carry's on its way. You can hear it plainly while driving even with radio on. I have a regular muffler on the truck but when this happens, it makes it sound like I have a catback on it.
Things i have done...
- New air filter
- New oil/filter
- New fuel filter
- Ran techron injector cleaner through tank of gas
I have an '05 F150 5.4L with 110k miles on it. Bought it used about 2-3 years ago and have had on-going ignition system problems. The current problem is a significant shudder/shake/vibration that occurs when driving 50mph+ (easy to reproduce around 65-70) on the freeway, when starting up a minor, but noticeable incline. This is an incline that doesn't require much additional throttle, and this trouble occurs with cruise control on and off. the truck starts shuddering pretty rough during the incline. However, if I release the accelerator (and go up incline with slightly lower speed) or give lots of gas on accelerator the shudder usually stops. The shudder always clears after the incline when returning to flat road and just cruising.
This occurred on a recent trip a few times and I pulled the following codes (in order):
P0356 (once) : Ignition Coil F (6) Primary/Secondary Circuit Malfunction
P0302 (recurring): misfire on cylinder 2
I have since purchased and replaced the coil on #2. This did not resolve the problem. I have replaced coil on #6 in the last year...
Because I saw a suggestion somewhere on the net around this problem while searching, that this could be related to OD, I tried disabling OD and enabled OD on an incline today to test after replacing COP on #2 and it seemed to resolve the issue to turn OD off. Not sure if related...?
Other observation: Cab of truck often smells of gas just after starting the truck. Mentioned this to the shop, but they didn't find anything obvious.
Short history of codes and work that has been done:
Sometime in early 2011: Ford service dept did this work.
First failure was coil bad on #7. Tech swapped 7 & 8 to verify the problem followed the coil. Then when the problem DID follow the coil, he replaced #8 with new.
05/2011 MacKenzie Ford changed all plugs
12/2011 - swapped out COP on #7.
02/2012 - P0306 - Now, COP #6 is reported as bad.
November/December 2012
P2104 P Throttle Actuator Control (TAC) - Forced Idle
P2112 P TAC Stuck Close
P2111 TAC Stuck Open
I did throttle body clean - removed it and used TB cleaner. replaced...
Late December 2012 - while driving on freeway at speeds 50+, but easily reproduced around 60 after starting up a slight incline. symptom is heavy shudder/shake. Possibly resolved by turning OD off.
P0356 (once) : Ignition Coil F (6) Primary/Secondary Circuit Malfunction
P0302 (recurring) : Misfire on cylinder 2
Have a 2008 Elantra GLS with 63K miles. A/T was serviced by dealer at 51K. Car now occasionally downshifts from 4th to 3rd when driving between 60 and 70 mph. Happens only when trans is hot (after 2-3 hours on hiway). When it occurs, it searches for the right gear, going back and forth from 3rd to 4th for several minutes before returning to normal. One thing odd is if I shut the car off for 5 minutes after it occurs, it runs fine afterwards. Do I need an ECU update or do I have a A/T problem?
View 11 RepliesSo my 07 with 125k miles has had new rotors for about 50k miles or so, but for a while now when the brakes get hot it gets a violent shudder on braking at highway speeds....the odd part to me is nothing at lower speeds, and not always at higher speeds....do I just have warped rotors again? The rest of the front end I good and tight....
View 9 RepliesI have had a 2005 f150 v6 5 speed for a little over two years. Got about 153k on it. Last night was sitting in a parking lot idling about 20-25 minutes, went to leave and she started sputtering hard, lost all power and died. Started back up, idled fine, as soon as i put it in gear same thing then the check engine light came on.
View 3 RepliesI am looking for info regarding motor swap. I blew the motor in my truck a couple weeks ago (5.4L Triton). She froze solid going down the HWY pulling my boat. I purchased a motor from a wrecking yard with~ 70k miles on it. I decided to do the swap myself and have run into a dilemma. In order to un-mate the trans from the motor the torque converter nuts need to be removed. There is an access port where you access the nuts one at a time. You must roll the engine over to bring each nut into view. This is where I am stuck. The motor is seized solid and will not turn over by hand even with a socket and a cheater bar on the main crank pulley. Do I need to remove the oil pan and/or the heads to figure out how it's stuck (pretty sure it ate a valve)?
View 1 RepliesMy truck died a few weeks ago on the highway had the hpop ipr valve and screen replace ran awesome for 2 weeks, shut it off ran into the store and it wouldn't start gave it a couple hours finally fired, started good the next 5 times go to start it the other day no start again, tried again 30 seconds later and starts trucks a 2006 with 226000km throwing no codes, I'm ready to go trade it off on a new one, where to start?
View 9 RepliesMy 1994 Aerostar, with 100,000 miles on it, started lurching at highway speeds. Weeks before this, the airbag light began blinking. The transmission man said it felt like it was shifting into overdrive, then out, then into overdrive, then out, etc.,etc. About this time, the cruise control quit being reliable. Dealership said codes didn't show a problem, "I must be mistaken". Then they said it sounded like a fuel filter.
View 6 Replies04 f350 drw 2x4 ... I know this is a weird question, but i put 4 new tires on the rear of my truck and developed what i can describe as "loose body" symptoms. Most noticeable in going down the highway it feels like the rear of the truck sways and its hard to control and keep straight at times. Check tire pressures n front and rear suspension for broken springs or loose joints. Nothing looks broken or out of place. Prior to replacement truck drove straight n all was good. Also noticed steering wheel is now off center.
View 9 RepliesToday I caught a deal on a 06 F-150 with the 5.4l. I noticed a slight vibration that comes and goes at highway speed (65-75), when I got home I jacked the front end up and checked everything out. The right front CV axle is still engaged with the tire when it is out of 4 wheel drive, I can engage the 4wd and everything locks in and works as it should. My understanding is that the axle should spin free and independent of the wheels when in 2wd? How would I go about troubleshooting this?
View 4 RepliesWe have a 2006 F150 w/new engine, new everything but transmission and cat. converter. When driving in warm weather with the AC on and at low speeds or idle the engine will knock and want to cut out but you rev and turn off the AC and it stops. Only with AC on. We replaced fuel filter, fan throttle took to dealer and updated the software which it stopped for 3 days and started again today. Could it have to do with AC compressor or low refrigerant?
View 4 RepliesMy 2008 Ford Focus SE hesitates at highway speeds, seems to decelerate and accelerate, sometimes more, sometime less and sometime not at all. dosn't seem to affect the acceleration.
View 1 Replies1998 discovery. Replaced fuel pump, crank shaft sensor, battery is good, had tune -up. Driving on highway and car just loses engine power, still have radio, lights, etc. Pull over and start it right back up. Drive about 15 minutes more and it happens again. Starts again. Then it does it again, but now won't start. Clicking sound in dash on passenger side. I leave it sit for 2 days. Starts right up, then rpms start revving then stops and dies. I have had every diagnostic known run, no codes coming up. I have had local mechanic keep it for days to drive it. He is also at a loss. I am REALLY tired of replacing random parts to no avail. Not to mention the $$ I have spent.
View 7 RepliesEGR marbles -- the chunks of carbon that come loose from the EGR cooler / intake manifold and stick the EGR valve open?
I've been getting these on 3 recent occasions, maybe 100 miles or so apart. The truck loses pretty much all power below 2000 rpm, smokes and stinks bad until I pull the EGR valve and dump these out. I'm trying to decide if I need to dig in and do a new EGR cooler and oil cooler. I've read the FordDoctorsDTS article suggesting these are caused by and coming from a leaking EGR cooler (possibly only when very hot) over time.
I'm not currently losing any coolant that I can tell, but was losing some a few months ago (during warmer weather), but also had a leaky heater valve that I replaced at the time. Not sure if the leaky valve would account for the total coolant loss (I lost over a gallon in a few weeks).
Here's the additional details:
- 2004 Excursion with just over 109K miles
- Replaced faulty EGR valve (was sticking open) about 300 miles ago
- Replaced stock turbo with new powermax turbo 300 miles ago. Old was rusty and pitted with sticking unison ring.
- I just did a total coolant flush, oil cooler back-flush, Restore and Restore+ and added new coolant filter
- Replaced thermostat during coolant flush. ECT stays pretty close to 190 degress when warmed up.
- ECT/EOT delta is mostly between 15 to 18 degrees, sometimes slightly lower or higher. Not much change after the coolant flush, but may be slightly improved.
- I've been doing pretty regular wide open throttle tests during recent test drives with the new parts above (I'm thinking this may have broken some of this stuff loose).
Here's today's marbles. They're all dry and will crumble if crushed. They are dull gray on the inside - not metallic as they kind of look here............
I have a 2001 250 Super Duty. I am having an intermittent issue with the electrical system and transmission. I don't drive this vehicle very much so it sits for 7-14 days at a time.
Previously I had the od light flashing and had the transmission solenoid replaced. A few weeks ago I decided to drive it to the corner store. As I arrive home the od light starts flashing and the transmission starts shifting funny. I pull into my parking spot and turn the truck off. I sensed the shut off was weird so I tried to start the truck. NO POWER! None! I go back to the truck a few days later and it starts up without an issue.
Approx. 20 miles later it starts again. This time I have to jump the battery. I ran the truck and it drove without issue. Again a couple weeks later it starts in again with the light flashing and electrical dying. What it may be? I'm probably going to get rid of the truck as I can;t justify to myself to keep dumping money into it.