It feels almost as if it's missing spark, but I have no check engine light on. 5 Answers When I accelerate hard, for example getting on the highway and giving it gas hard, it hesitates … When you go to step on the gas pedal to accelerate, you will suddenly feel like the power has been lost in the engine for a couple of seconds. a few weeks ago when i would come to a full stop it felt i hesitation when accelerating-not to the point of jolting. Messages: 12,264. The truck was okay at idle and at low city speeds but could not push the exhaust pressure out at high throttle. It seems to idle fine and shifts into gear fine. I have plugged a obd2 reader and no codes, no check engine light, did a koer test had a intake manifold control runner stuck open come up ,replaced control runner ,throttle posion sensor since then , did spark test on all coil packs all had good spark. Ford F-150 2004 168000 miles. Cold start up the transmission hesitates (causing me in some instances to lunge forward) - very obvious issue, but dealership says it is not throwing a code & they can't duplicate. The 2019 Ford F-150 has 4 problems reported for clunking when accelerating. The truck has done this since new and currently has 16,000 miles on it. Engine hesitation, almost by definition, usually goes back to a misfire in one or more of the cylinders. Discussion in 'F-150' started by Coiled03, Jan 29, 2009. 2020 Laramie 4wd, 5.7 hemi with etorque and 14,000 miles. I have a 2004 ford f150 fx4 5.4l, it hesitates during acceleration and jerking ,has no power, I can still drive vehicle daily. It had a dead spot when i would accelerate and it would not stay running at a intersection and would not idle in the morn. Figure 12. Similar Threads - 1984 351w acceleration Forum Date; Replacement Engine for 1984 F 150: 1980 - 1986 Ford F150, F250 and F350 Truck Forum: Jul 24, 2020: 1984 F 150 Styleside Tailgate: 1980 - 1986 Ford F150, F250 and F350 Truck Forum: May 27, 2020: 1984 f-250 460 7.5 L issues: 1980 - 1986 Ford F150, F250 and F350 Truck Forum: Jan 6, 2020 They said this could be … Add a Preferred Customer membership to your cart and pay wholesale prices for all AMSOIL products – a savings of approximately 25%. When I accelerate hard, for example getting on the highway and giving it gas hard, it hesitates to go then it will go and hesitate again. When a TPS begins to go bad, it may not pick up all the signals or may be delayed, leading to hesitation when trying to accelerate. 5 Answers. Jan 29, 2009 #1. 2004 ford f-150: hesitation when accelerating..rear end..seals i have 2004 ford f-150 5.4L with 70,000 miles which i purchased new. Mine's Hesitation/Bucking under very light steady acceleration, as in climbing, will happen anywhere from 40 to 60 MPH and sometimes even taking off from an intersection. The 2015 Ford F-150 has 1 problems reported for hesitates when accelerating. Recently, starting about 2 weeks ago, was traveling down the highway going 60-70mph and the speedometer started bouncing around, going crazy while using the cruise control and not using the cruise control. Align a blend door actuator; My 5.4 2009 F150 has not heating forced air. Similar Threads - f150 hesitates stalls Forum Date; 1980 F150 Idle: 1980 - 1986 Ford F150, F250 and F350 Truck Forum: Aug 18, 2020: 81 f150 81 f 250 are the beds the same whats the diff if any? reset and adjusted chock working ok ( i think) still … 2009 - 2014 Ford F150 - surging or hesitation when accelerating - Few concerns have been mentioned regarding this, but ever since I put an AFE cold air intake on, ... 2009 - 2014 Ford F150 General discussion on 2009 - 2014 Ford F150 truck. Also on the transmission dipstick it has a grid area for the fluid level but it says cold. Question: 2005 Ford F-150 is hesitating when accelerating. 1995 F150 bucking and hesitating Straight 6. My truck will run but upon acceleration it acts like it is starving for - Ford 1995 F150 Styleside Regular question I'm having a minor problem with my 2004 Yamaha F150 (4 stroke with EFI). My Autoxray scan tool shows the "cam duty cycle" takes a severe dive when the symptom occurs. I have heat but not forced air? $1,400.00 later, it runs just fine again. Sponsored by: surging or hesitation when accelerating. When I've been driving at a relatively constant speed and go to accelerate (say to climb a hill) the truck hesitates and almost feels like it's a miss in the engine. Average failure mileage is 14,500 miles. Your car hesitates when accelerating. Picture yourself driving a 50 mph. Like all EcoBoost engines, it uses a combination of turbocharging and direct injection to boost power from a relatively small engine. (Updated on June 30, 2020) Car engine hesitation is a noticeable problem that can occur as you’re driving. Align a blend door actuator; My 5.4 2009 F150 has not heating forced air. I just had this hesitation problem fixed on my F150. But there could be issues that can lead to more expensive problems down the road, so read about common causes here and get your car running strong again. 6) Problems Switching Gears The issues with acceleration can lead to gear transmission problems as the ECM doesn’t get the correct information about the acceleration. A vehicle that struggles or hesitates to accelerate may be unpredictable and moments of hesitation may be coupled with equally dangerous moments of surging or unexpected acceleration. You may experience slow acceleration, acceleration surge at both high and low speeds, hesitation or delay in acceleration, and other related symptoms. The problem is intermittent, and usually shows up when accelerating from top, but can appear at higher speeds (sudden loss of power). Technical Service Bulletins, or TSBs for short, are notifications made directly by Ford to help automotive technicians diagnose and repair commonly reported F-150 problems. I have a 1990 Ford F-150 it had a 302 5.0 engine in it and it blew so I put a Ford Mustang 302 5.0 engine in it and the motor is built and is fast but when I put it in my truck it drives like a stock f150 how come? Hesitation/choking when accelerating. ... Ford F-150/F-250: How to Replace Throttle Position Sensor. i replace the carb with a stock motorcraft 2bbl. on the dipstick close to the grid area. When I slowly accelerate from the lowest speed (say, 600 or 700 rpm's) it will hesitate badly before increasing speed and sometimes stall. 2003 Ford F-150 '01 Ford F-150 Hesitation This Ford Has A Problem. The hesitation actually got worse, had the carb. Average failure mileage is 2,550 miles. Unless you are constantly watching your speedometer (instead of the road), your speed is probably going to drift up and down a bit. It turned out to be two broken and clogged catalytic converters. No problems noticed when … Refer to appropriate WSM for diagnosis and repair for engagement clunk, hesitation during light throttle 1-2 upshift, harsh downshift while coasting 15 MPH (24 Km/h) and, shudder/vibration on moderate to hard acceleration. 2007 Ford F-150 TSBs 32 F-150 Technical Service Bulletins. For the most part these aren't serviceable and will need to be replaced. 2 SAVE UP TO 25%. I've been getting a noticeable surge/hesitation on acceleration once in a while. Jerking/Hesitation. 351m,hesitation - posted in 73-79 Ford Truck: Need some help.(please). Throttle body and throttle position sensor. Ford F-150 - 1997-2003 :: 2001 - Jerking While Accelerating Between 40 - 60 MPH? Date: Sun, 09 Jun 1996 15:52:16 +0000 From: Ben Mehling bmehling@falco.kuci.uci.edu. When I start my f-150 it idles fine when I start driving it shifts and has power but after 20 miles it begins to lose power,I'll stop turn it off for about 5 minutes start it up and drives fine for another 20 miles and loses power again. 2005 F-150 XLT 5.4: Hesitation when hard accelerating. Notice a little hesitation in the shifting of the vehicle about a month ago. Coiled03 Well-Known Member Established Member. I have a 1990 Ford F-150 it had a 302 5.0 engine in it and it blew so I put a Ford Mustang 302 5.0 engine in it and the motor is built and is fast but when I put it in my truck it drives like a stock f150 how come? "Subject: <300zx> Bad hesitation driving ME mad. The hesitation, or "lag" always happens when the truck is in high gear, and is so bad that sometimes the truck almost appears to stumble yet all cylinders are firing fine, no codes in the computer. 2018 Ford F-150 lariat (bought new with 2000 miles). Why does my 2005 F-150 5.4 hesitate when accelerating prior to downshifting? I have heat but not forced air? so i had a mec … At best, this is frustrating. Hesitation on accel? This hesitation could be potentially dangerous in situations like entering and exiting the highway from an off-ramp, where acceleration may be necessary to merge with traffic. You’ll pay regular AMSOIL shipping rates, but still save more than regular online/catalog customers. Reply Subscribe . When The Unit Is Cold And First Started It Hesitates And Cuts Out Like It Just Isnt Getting Fuel. Ive bought this 79 bronco w/ a 351m all stock. Joined: Jun 25, 2004 Location: IL. Just purchased a 2001 Ford F150 super crew lariat v8 4.6/5.4 2v OAD at 156k miles, iv had no problems with it until I drove over the pass and after 2hours of driving my truck started to jerk when I accelerate between about 40-60mph. At normal city driving speed, 45-55 mph, Big Red (that’s her) tends to shudder a bit. F-150 TSBs? I have a 2004 Ford F150 FX4 and I’ve been having a (hopefully) minor problem for the past 15k miles or so. The issue revolves around the Ford F-150 – specifically those equipped with the 3.5-liter EcoBoost engine – of which some 360,000 were built in … The misfire is causing the hesitation; you just need to … The 3.5-liter EcoBoost V-6 is in roughly 40% of F-150 pickups. My 87 300zxt continues to stutter/hesitate BADLY. Hesitating when in drive but sitting still and the belt squeals sometimes. If I … 2005 F-150 XLT 5.4: Hesitation when hard accelerating. It does this about 3-4 times and then goes without an issue. I drive a 2011 Ford F-150 with the 3.5-liter EcoBoost engine and 26,000 miles. When one or more cylinders stops firing, the power cuts, and the vehicle hesitates under acceleration. Own a used 2011 ford f150 eco boost with just under 115k miles.