Ford F-150 (2004-2008) :: Hesitation At 40 - 60 Mph During Heavy Acceleration
Here's the story on my truck. Spits and sputters between 40-60 during heavy acceleration and on rare occasions will jerk/pop while at a steady speed. No engine or wrench lights. I thought it might be the fuel filter and changed that, it didn't work. I also ran two bottles (on 2 separate occasions) of Duralube extreme fuel system cleaner, that didn't work either. So, I took it to the Ford dealer for a diagnostic. They had a hard time getting it to act up but said it finally misfired on #8 and recommended replacing the ignition coil and plug. I did that, still have the same symptoms. So, I thought it might be the fuel injector and changed that. Still same symptoms and ZERO dummy lights.
After several YouTube videos, I thought it might be the TPS and got one. Before I changed that however, I cleaned the Mass Air Flow sensor, still same symptoms. I finally changed the TPS, but the engine wouldn't start or run at all, no warning lights yet. When I put the old TPS on, it would run. I unplugged the TPS and it still ran but very rough. Now the engine light IS on! Thinking I purchased a bad part, I took it back to O'Reilly's and they warrantied it out and gave me a new one. I had 19 PO codes. I changed the TPS again, and, it won't start or run at all. Put the old one on and it runs. They cleared the codes and told me they think it could be the ECM/PCM.
Why will a new TPS not work? I still have the same issue of hesitation @ 40-60 during hard acceleration. No hesitation during a moderate acceleration.
Ford F-150 (2004-2008) :: Hesitation When Car Is Cold In The Morning
I have Hesitation problem with my expedition 2004 during mooring time some time when car in cooling condition but now days must of the time I have this problem I want to many work shop and the tested my car by computer but they cant find clear fault the told they need to check many thing.
View 2 RepliesFord F-150 (2004-2008) :: 2005 - Hesitation - Cranking But Not Starting
Quick truck stats: 2005 F150, 5.4L, 85,000 miles
The past few weeks my engine has been hesitating on some cranks before it would start. I figured it was due to the cold weather so didn't pay too much attention to it as it was also not throwing the check engine light.
Yesterday it didn't start at all after the several attempts of just cranking over and over. It still didn't seem to trip the check engine light but I pulled my scanner out anyways and it had the code p1237. I cleared it and the truck started right up. It even had no more issues the three times I started the truck after that.
Today, however, she is not starting again and not throwing any codes. Still cranking so I'm sure it's not the started or the battery. I'm going to have my husband pick up some starter fluid on his way home today to see if I can at least get a temporary start since I think it's the fuel pump, or possibly the fuel filter. It is cold again this morning so I'm wondering if the cold is somehow making this issue worse. Either way I'd like to fix it, since being stranded with a truck that doesn't start is not my idea of a way to pass the time.
What else it might be and how I might be able to diagnose it?
Ford F-150 (2004-2008) :: Hesitation When Accelerate From A Stop Sign
This morning as I was driving to work, my truck hesitated as I tried to accelerate from a stop sign. I pressed the pedal and nothing, almost felt like it was going to stall. After about 3 seconds it started driving again and I had no further issues. It seems to only do this in the morning when it is cold. It has done this a couple of times before, but usually it recovers almost immediately. I had no CEL come on. 2007 F150.....
View 1 RepliesFord F-150 (2004-2008) :: 2005 F150 5.4L Hesitation Under Load
How's it going? I have a 2005 F150 with the 5.4L V8. It has 70,000 miles on it and until yesterday and has been a great truck. While driving in traffic yesterday the truck started running rough and hesitating. It through two codes - misfire cylinder 5 and misfire cylinder 6.
In response, I purchased two new coils and 8 new autolite plugs. The plug installation went smoothly and the coils all went on without incident. However, this didn't fix the problem!
The next day I found that cylinders 5, 6, 7, and 8 were all having issues. At this point I also had an "O2 stuck lean" code so I pulled the plugs and found all four brand new plugs fouled and smelling like gas and an ehaust that smelled like raw fuel. This led me to replace the O2 sensor on the drivers side. With the new O2 my lean code disappeared but I still had a rough idle.
Further troubleshooting found that injector 6 was stuck open (which presumably fouled my O2 causing it to read lean and dump fuel thus fouling all the plugs on one side). I replaced the injector and the rough idle disappeared and all seemed really well as the truck idled in my driveway.
However, as soon as I hit the road I noticed a major hesitation. The motor is also noticeably louder and has a very hard time accelerating. I'm thinking that I've plugged up my cat by dumping so much fuel in to it and the hesitation is caused by a lack of breathing - does this sound possible? How would I confirm this without replacing the cat? Anything else I should look for? I'm fairly confident I have combustion in all 8 cylinders now so I'm leaning towards intake/exhaust issues.
Ford F-150 (2004-2008) :: 4.6L Engine Hesitation And Rough Idle
I have a 2008 Ford F150 4.6L and its been broken down in our shop for quite some time now. It started acting funny when I could not get the truck to do over 80kmh. Slow acceleration, and a horrible shaking when it idled. Eventually it was undriveable since I could go above 50kmh anymore. From looking online we replaced the plugs and coils. We removed the intake to find the gaskets were shot so coolant was leaking into the spark plug tubes which could've been the cause of a misfire. Fixed that. Still the same. We replaced the egr valve and dpfe sensor because we keep getting the P0402 excessive egr flow code. Still no luck. My dad is a journeyman hes just not too familiar with newer trucks.
View 4 RepliesFord F-150 (2004-2008) :: 2007 - Hesitation And No Power At Acceleration
What a year 2014 has been. I had a 2005 F250 6.0 that was stolen in March and totaled when found days later. My insurance gave me enough to pay off the loan and render me the obstacle of replacing it. I got my F250 pretty cheap so replacing it for the insurance pay out was non-existence. I ended buying a 2007 F150 EC 4X4 w/ the 5.4 and having 97,000 miles on it. Just as luck would have it, I had the F150 for about a week before the cam phasers went out. Luckily the warranty covered it enough to put in a new LKQ reman engine.
I got the truck back about 2 weeks ago and put 1,000 miles on it in a very gracious form. I have noticed since then that despite letting it warm up for 20 minutes, I could put the throttle on the floor and the outcome was very poor. It was almost as if I was attempting to pull a house down. I couldn't even get the tires to spin at all, not even on wet pavement. Now I know this is not my old F250 6.0 turbo diesel, but really, I expected more from a new reman engine! They used all components from the old engine except for new spark plugs and a fluid change. Why is this "new" reman engine so weak?
Ford F-150 (2004-2008) :: Ticking And Hesitation / Stumble A Bit Between 40 - 55 MPH Under Load
First, a little background on my truck. 2007 with 5.4, 122000 miles, oil changes with 5-20 Motorcraft and Motorcraft filters, plugs done by dealer 40000 miles ago. The truck has developed a ticking noise, kind of like a lifter (I know these engines don't have lifters) that is most noticeable from the side of the truck near wheel. ticking speeds up with the rpm. Also around same time, between 40-55 under load there is a bit of a stumble, but I can gas thru it. I'm guessing these are related. I'm thinking spark plugs again, but shouldn't I get more than 40000 out of them? I might just take it in, since I've got oil leak somewhere around back of the oil pan, but figured maybe might get some clues first. Also, no CEL.
View 4 RepliesFord F-150 (2004-2008) :: 2005 - Hesitation Under Load - Combustion In All 8 Cylinders - Cat?
I have a 2005 F150 with the 5.4L V8. It has 70,000 miles on it and until yesterday and has been a great truck. While driving in traffic yesterday the truck started running rough and hesitating. It through two codes - misfire cylinder 5 and misfire cylinder 6.
In response, I purchased two new coils and 8 new autolite plugs. The plug installation went smoothly and the coils all went on without incident. However, this didn't fix the problem!
The next day I found that cylinders 5, 6, 7, and 8 were all having issues. At this point I also had an "O2 stuck lean" code so I pulled the plugs and found all four brand new plugs fouled and smelling like gas and an exhaust that smelled like raw fuel. This led me to replace the O2 sensor on the drivers side. With the new O2 my lean code disappeared but I still had a rough idle.
Further troubleshooting found that injector 6 was stuck open (which presumably fouled my O2 causing it to read lean and dump fuel thus fouling all the plugs on one side). I replaced the injector and the rough idle disappeared and all seemed really well as the truck idled in my driveway.
However, as soon as I hit the road I noticed a major hesitation. The motor is also noticeably louder and has a very hard time accelerating. I'm thinking that I've plugged up my cat by dumping so much fuel in to it and the hesitation is caused by a lack of breathing - does this sound possible? How would I confirm this without replacing the cat? Anything else I should look for? I'm fairly confident I have combustion in all 8 cylinders now so I'm leaning towards intake/exhaust issues.
Ford F-150 (2004-2008) :: Hesitation And No Start / Smoke Started Coming From Under The Hood
I have a 2004 F150 4x4 super crew with te 5.4L in it. Truck has 200K plus miles on it and I went to start it after driving (it may have say for 10 min) the truck hesitated and didn't start and smoke started coming from under the hood. Looked like it was coming from the drivers side maybe mid fender or closer to the firewall. Look at it and nothing was on fire but something defiantly happened cause now its compensating for something. The rpms are up from what they usually are and the drivers information was cleared. Truck runs now but just worried
View 6 RepliesFord F-150 (2004-2008) :: Engine Vibration / Miss At Idle - Slight Hesitation During Acceleration
I posted a while back about my 04 5.4 having an issue at idle. I did all the normal things like replace coil, spark plug, etc etc. No change to the issue. It still acts as though it's misfiring on a cylinder and I get codes P0306 and P0316. Finally took it to ford and had a diagnostic check ran. Everything on the top end was in working order. The tech even put a known working coil on 6 and nothing changed. I was told that it's either an intake or valve issue on that cylinder. But no definite answer to problem.
Fast forward to yesterday. I got a wild hair at lunch and went out and started truck. Pulled injector plug off of 6. No change to the way it was running. I did the same for 5, 7, 8, 1, and 2. All of which made a big difference in the way it ran. It was obviously misfiring with no fuel to cylinder. This gave me the idea to swap 5 and 6 when I got home to see if the issue followed the injector from 6. I did NOT. I pulled the plug on 5 and got the obvious change in the way it ran. So there is definitely something going on at cylinder 6 that I cannot figure out.
PCM, bad intake, bad valve? I'm not rich so a trip to ford for repair is gonna have to wait. Truck seems to run fine when driving except for slight hesitation during acceleration.
Ford F-150 (2004-2008) :: Slight Miss / Hesitation - Power Loss When Driving Constant At 25 - 30 MPH Occasionally
Had this truck a few years now, and it has always had a slight miss/hesitation and maybe a few codes. The timing chain skipped a tooth and the truck was down for about a year. I have 4 other trucks, so it wasn't a big deal. I finally had time to put a new oil pump, chains, guides, tensioners, phasers etc. The truck actually runs very well and quiet. But, now misses far more than I remember it doing.
When driving in town constant at 25-30 mph occasionally it will loose power for a brief moment(<1 second) and then be fine, the security light on the dash turns on for a few seconds. It drives at 55-65 just fine, unless I am going up a hill or something else increasing the load.
2004 5.4 3v 2wd
CEL-
P0453 (fuel tank pressure issue)
P0351 (ignition coil a primary/secondary circuit malfunction)
P0356 (ignition coil f primary/secondary circuit malfunction)
The coil packs are new, and I have injectors on order. Also found this thing on the back of the motor, it connects to the fuel rail on the drivers side. Where it should go. I looked on my other trucks. But my other 04-4wd has a box by the battery it connects to, but mine doesn't have any of that stuff. And my 08 doesn't have anything like this at all.
And a pix of the truck in question.
Prius (2004-09) :: Hesitation And Power Loss - Water In Gas Tank
Hesitation and power loss have returned. I removed all four spark plugs and found that the spark plug on the driver side of the engine, or side closest to the inverter, and its coil pack were covered in dried/sticky oil with no loose oil present around them. Pics added to new post #11 of coil pack and spark plug.
I couldn't find anything that really matched the symptoms I was having this afternoon on the way home from work. After letting the engine idle for about a minute to get through Stage 1, I pulled out of work but noticed I kept hearing a slight whining from the inverter (radio was off and windows were down) while going uphill on the road out of our parking lot. Speed was in the range of 25 to 30 MPH.
Torque showed I was pulling between 10 and 20 amps from the HV battery but what I noticed that was REALLY weird was that the timing advance gauge showed I was running around 2 to 3 degrees (?) instead of normally being around 13 or 14+ depending on how quickly I'm accelerating.
And the more acceleration I demanded, the the more amps were coming from the battery and the RPMs on the engine would go up, but the timing advance still remained below 10 degrees. I didn't hear any knocking but I could definitely feel the lack of power.
Elantra HD (2006-10) :: 2008 - Hesitation And Dragging At 35 - 40 Mph Range
Are there any 2008 Elantra drivers out there who have a problem with hesitation and dragging at the 35-40 mph range (3rd into 4th gears)? I'm told by the dealer that although there is a hesitation which he noticed as well after driving it, there is nothing that can be done until Hyundai issues a "fix." Learned my lesson here and will probably not purchase another Hyundai. My 2003 Elantra was a better ride.
View 3 RepliesLexus GS 2006-11 :: 2008 GS350 AWD Jerking And Hesitation At Low Speed
I just got a used GS350. At about 20-25mph, it can sometime hesitate/jerk when I am driving without much acceleration. If I press the accelerator hard, the car accelerates without much problem.
I tried searching through the forum but couldn't find same problem except maybe the LS460 [URL] ....
I have tried cleaning the MAF with CRC cleaner + resetting the ECU by unplugging the battery for 10minutes but I still have the problem. Strangely, I didn't have to recalibrate the windows after plugging out the battery, but the GPS did the long initial boot-up..
Lexus GS 2006-11 :: 2008 GS350 Transmission - Hesitation At Low Speeds
I have 08 GS350 that has been doing some big time hesitating at low speeds. Brought to dealer and the mentioned water got into the transmissions and want me to pay for a flush.(I think they should, since it's under warranty). Can damage done now cause issues in the future?
View 12 RepliesHyundai - Elantra :: 2008 - Distinct Hesitation When Accelerating From Speeds Of 10 To 15 Mph
I have owned this car from new and it currently has 32k miles. The only fuel used has been 85 octane or occasionally a tank of 93 octane. There is a distinct hesitation when accelerating from speeds of 10 to 15 mph and I do not believe it is due to the transmission shifting. I did move to my current state,California, from Pennsylvania and was told by my local Hyundai dealer service department that because California has a different gasoline formulation from most other states as well as a summer and winter blend to reduce emissions it is recommended to run a bottle of injector cleaner every 15k miles.
View 1 RepliesPassat (B6) :: 2008 Wagon - Intermittent Hatch Button Hesitation
Every once in awhile - very intermittently - when I press the close hatch button on the tailgate of my 08 Passat Wagon V6 4mo, it starts down and stops. I have to make myself watch it because more than once I have gotten in and started off. I only notice when I look in the rearview mirror and notice the unobstructed view. It seems to happen most often the first time I use it in a day but that is not consistent.
View 4 RepliesIS F (2008-2014) :: Slight Hesitation When Start To Accelerate From A Stop
My isf for couple months now and love the car. I have an 08 which only 7k miles on it. Lets say at a stop I start to accelerate, I notice a slight hesitation before it picks up around 1-1.5 rpms. Under hard acceleration I don't notice it, but with nice and easy acceleration that slight hesitation is kinda annoying. Not sure since car has such low miles on it if I need to run fuel injection cleaner or something, of if something else could be wrong. I kinda mention it to the lexus service manager and he said something that next time I bring the car in that he'll let the mechanic do a tranny ecu update of some sort? I didn't know that there was such a thing.
View 14 Replies