Ford F-150 (2004-2008) :: FX4 Surges While Trying To Maintain A Steady Speed During Power Delivery To Wheels
Jul 23, 2011
Problem I'm having, when in overdrive my 04' F150 FX4 5.4 Triton surges while trying to maintain a steady speed during power delivery to the wheels, it causes a shuttering and bucking effect. If I push the button to turn the O/D off, the RPMs rise and problem goes away. During the problem no CEL illuminates and tach stays constant. Fluid condition & level are okay. (not burnt) I'm completely baffled since there is no code in the ECM to point me in the right direction. I do use the truck to occasionally tow my 5k lb boat & trailer. When I began towing I did not know to turn the O/D off and put some miles on towing in overdrive, I know now that was not good for the tranny.
View 7 Replies
Advertisement
R32 has 29,000 miles. I live at 8000ft. Recently, my R, when traveling back from sea level, starts to have what seems like fueling issues at around 7000ft. These take place by the car being unable to maintain a steady speed and then losing power. Once power falls you can press on accelerator and then will pick up again and accelerate through the gears until you need to back of the accelerator, then the same problem will happen... Once home after lurching around like a kangaroo the car will be fine if switched off and then left for an hour before driving again.
View 7 Replies
So i think I have a bad EGR valve cause I've eliminated o2 sensors, MAF, Spark plugs, coils, vac leaks, Fuel filter, and Fuel injectors. Truck throws P0172 and p0175 code, surges in RPM's at 10 MPH when hold steady on gas pedal, exhaust makes a popping sound like popping popcorn. I reset the PCM and unhooked the MAF and it ran a little better but still get the other symptoms.
View 2 Replies
I have just purchased a 2008 Santa Fe Limited and there is a problem with the steering. At slow speed, particularly in reverse when performing a full-lock turn, the power delivery is jerky and the vehicles jumps a bit.
It feels like either the AWD system is binding or the CV joints are operating beyond their limits. I have ready other posts that this is a known problem - the dealer I bought it from said the same, that it is known and seems to be accepted by Hyundai, there seems to be no recall on this and apparently this doesn't happen in post 20009 models when they face-lifted and supposedly changed the steering lock limits.
I'd like to understand more what is happening, see if there is a solution that I can implement, or alternatively if I have to just accept this, then it would be good to get reassurance that what I am feeling is not going to damage something further down the line.
View 2 Replies
I've noticed when trying to maintain a low speed (25-35mph) the car doesn't really like that... Almost feel like the brake is being slightly pushed on and off, or the car is losing power. It's been most noticeable around curves when coasting but having to give it a bit of gas to maintain speed. Shifting overall doesn't seem bad, so it doesn't feel like a tranny issue. I've also sometimes noticed the opposite. Sometimes when coasting then pushing the brake to slightly slow up it almost feels like the throttle is very slightly being pushed. Not sure if I'm having powertrain issues or just not used to the way this car drives. It just get most annoying when trying to maintain 30mph in city and the car occasionally surges a bit.
(2010 camry xle, i4, 97,000 miles)
View 1 Replies
My cruise control will engage but not maintain set speed. It slowly loses KPH, 10 KPH every 30 seconds. What to look for?
View 6 Replies
Symptoms:
-Car "Surges" at any speed. Loss of power is significant.
-Check engine light is on , DTC code = P0420
Tried:
-Fuel injector cleaner
-Spark plugs replaced around 40k miles ago
-Checked for leaking valve cover gasket (oil in plug wells) None
Can a clogged fuel filter cause this? At idle the car is fine, the symptoms seem to only occur when car is under load (In drive). My son drove this car an it always seemed empty meaning he never put much gas in it.
View 14 Replies
Diagnosing our 2006 Hyundai Sonata.....2.4 L engine....automatic.
While cruising along, about 40mph and up I guess...when traveling at a steady throttle and engine speed... if you ever so slightly give it more gas, sometimes it will act as though it is losing power for a second and then kick back in.....but revs will stay up....
I was thinking either throttle position sensor or (gasp) transmission.....it doesn't really feel like a slipping tranny....but wondering if it is issues with the overdrive...
View 3 Replies
What may have wrong with my trans on my truck... this is what its doing, I am able to put in drive and drive it for so long then its like the truck is in neutral and doesn't gain or maintain speed. but i can turn the truck off and put it in park and restart the truck and it will go again?? that is how i got it home....
the fluid is burnt now but wasn't that bad until the trans started doing this. I have pulled off the pan and inspected the filter and it does have metal debris in it, pulling the valve body off tonight before work (work 3rd shift) to inspect that, i think it has something to do with the solenoids or valve body because it actually moves but then quits until i restart the truck. Also does the transfer case use fluid from the transmission? or are the fluids separated between the 2.
Truck has 4.0L SOHC with a 5R55E in it 4WD...
View 7 Replies
Got an 07 Screw with only 50,000 miles. Yesterday, wife drove it home from work and said it would only do 45mph and didn't sound good. No warning lights were on, she said. I test drove it in the evening and it ran totally fine. Today, she drives it to work and said it ran real rough and "Check Engine" light was on. I picked it up from her work and it idles very rough and slow, and once you hit about 2000 rpm, it runs decent, maybe even normal. Below that, it stumbles and engine doesn't sound right. "Check Engine" light is either ON steady, or flashing. I don't have a code reader, so its likely going to the Ford Dealer Monday. Is there any way to read the code without a reader?
View 11 Replies
I owned a 09 Prius for 8 weeks, and after a total loss accident, we replaced it with a 08 Touring model. I have never experienced anything like this with the 09, but have multiple times on the 08 (though no real rhyme or reason as to when/why)
The originally happened the night we picked up the 08. I stopped at target to pick up some milk while the wife sat in the car. the car was left in ready mode. when the ICE engaged the car "surged" forward and was enough to startle my wife (who was the usual driver of the 08) enough for her to think the car was not in park (which it was)
We tried to recreate it after i was finished at the store, and while the car did rock forward, it was not as pronounced as the first time (though much more then We feel the car should move upon the ICE starting.)
Took the car back to toyota, and they preformed a full inspection and stated that everything was within toyota's spec, and to keep an eye on it if it were to happen again.
Well it has done this about 5 times in the last few days. The Dealer is looking in to it.
View 12 Replies
I have '98 Transport Montana and I took it on a trip last weekend on the expressway. I would be doing 70 MPH and approach a hill and start depressing the accelerator to maintain my speed and I could feel a chugging. Also, I could hear the engine seem to make a change in its sound coincident with the chugging. The RPMs at this point were around 2K. It's a 3.4 and all of the normal stuff has been maintained properly (spark plugs, filters, etc.).
View 2 Replies
I recently picked up a 2001 Nissan sentra. This car sat since around 2010. I guess the previous owner had a lot of work done by the dealer a year or so ago and it looks it, brake pads etc. are brand new, a couple other things look new but he's not a car guy in the slightest and can't find the receipt nor will the dealer give him one due to computer system change and I actually tried with them myself, that's correct.
Anyway, the check engine light is on and bringing it home we had reports of black smoke out the exhaust. It also felt like it wanted to stall at times when stopped but it never did. Well, I ran it a while and at times it seemed like it wanted to clear up, at others it didn't but the light stayed on and what not. I scanned it and it claimed the O2 sensor 1 bank 2 was bad so I replaced it.
It didn't make any difference so I cleaned the Mass Air flow sensor. Again no good it's the same. Here's the funny thing though, it's great first thing in the morning usually. As the day goes on and as we drive it, it gets worse. What I can try/change next?
I'm almost leaning on electrical issue where it gets worse as the day goes on and dew dries off. I'm new to Nissan's, I like the car and really want to work this issue out. I did replace the fuel pump when I got the car, and have run sea foam through and actually on that tank of gas it ran pretty good but that's worked itself out now.
View 5 Replies
I'm noticing just the slightest 'hitch' in power delivery in second gear at about 1,500 rpm. My speculation is that this is the torque converter locking up.
View 14 Replies
Recently bought an Audi A4 Quattro from a dealer with 112,876 miles on it.. The car runs absolutely beautiful, it up-shifts and downshifts without any noticeable issue, it changes gears without any issue, however... When I am trying to maintain a stable speed of around 35 - 40mph and my engine hangs around 1700RPM it'll bounce up and down slightly..
The revs will hop between 1700RPM up to around 1750RPM and then back down, and then up again.. It's hardly noticeable and the only time it causes any issue/delay is when it hops above 2000RPM and then back down... Is the torque converter the issue or what else could be the cause? Timing belt has been done, spark plugs have been checked, oil has been changed.
View 11 Replies
Middle of May, I went to Boston. On the way there, I started to notice a slight whirring noise that was only present when I gently feathered the gas to maintain highway speed. If I were to apply any more throttle, the noise would go away, and if I were to pull my foot away and allow engine braking, it would also disappear.
So I did my best to finish the trip to and from Boston adjusting my driving to avoid the noise. Once I came home, I researched and thought the noise might have been my wheel bearings (I had just replaced lower control arms, lower ball joints, inner and outer tie rods prior to leaving for Boston). I also had a shop install my upper strut mount bearings and bushings simultaneously with the wheel bearings.
Since then, the problem still continues. It has grown louder, but still occurs under the same situations. I've focused more on it and here are the conditions under which it occurs:
1. Car must be warmed up. Starting it up cold and allowing SAI to run then driving, car is fine, no sounds. Usually takes 20-25 mins of driving to get it to start making noise.
2. Car still only makes the noise when the gas is being feathered (ie barely pressing it enough to give it any sort of throttle. It does also make the noise between shifts when reengaging the gear and applying gas, as the throttle pedal passes the point of throttle off to throttle on.
3. I'm hearing more noise now during engine braking than I had been previously. Could be related?
View 6 Replies
I have a 2005 KR that the 4wd doesn't lock in the front wheels. I haven't seen my exact problem as I have been searching it. When I turn the switch. The dash lights both in high and low 4wd. I hear the transfer motor engage in both hi and low. No ratcheting noises from the wheels. I have replaced the solenoid. And still nothing. Checked fuses And they are OK.
View 3 Replies
I just recently bought a used 2004 fx4 with 148k and everything appears to be engaging but front wheels not pulling. I've already replaced the IWE solenoid behind the battery to avail, my question is, when I put it in 4H, light comes comes on, but I don't "feel" the transfer case engage, when I put it in 4L, light on I feel it shift. So could the shift motor not be engaging the front driveshaft even though the lights come on?
View 10 Replies
I have a 2004 F-150 SCrew Lariat 4X4 with 80K miles. Over the past month or so, every once in awhile there would be a loud metallic "clacking" sound (kind of like sticking a peice of aluminum in a bike's spokes) that would start at higher speeds and would turn into a low pitched whirring gear sound as I slowed down and eventually there would be a thud followed by a sensation of running over a small bump and the noise would be gone. Kind of confusing I know, but that is the best way to describe it. My gut feeling is a wheel bearing or transmission problem....
View 9 Replies
I have a 2006 XLT w/ the 5.4L engine. Manual transfer case, I'm wondering where to start looking for problems w/ the 4x4...the front wheels don't engage.
View 3 Replies
I have a really weird issue with my 2003 Ford Focus. Manual transmission, just over 50,000 miles. I've been noticing a stumble or hesitation (like the engine is cutting out) at steady speed, but ONLY when it is snowy out, more if it's windy as well. I don't recall that this happens if it's rainy or foggy. All maintenance is performed as specified, to include air filter changes.
View 9 Replies
