Ford F-150 - 1997-2003 :: 1998 - Shudder / Hesitation At Certain Speeds
Oct 8, 2014
Just bought a 1998 5.4l F-150 Lariat. 136,000 miles.
Question about the overdrive button on trans handle. When I push the button, I don't see any light turn on (or off) and I don't feel any change in the gear ratio or increase/decrease in rpm's. I assume since the button in there marked "overdrive" that the vehicle in fact was equipped with it. Could it be a bad button, fuse, or ?
Also, it just started the shudder/hesitation at certain speeds that I see a lot on these threads. Seems like that is a coil issue as the description in many threads is exactly what I am experiencing to incl the rotten egg/fuel odor. However, it started the same day (not same time, later same day) I decided to push the overdrive button while checking out all the things on the truck.
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I will add as many details as possible :
2000 f150 4x4 offroad package
5.4L with 131k on it
new Dorman intake manifold
new Global Automotive (Ebay) COPs
New Motorcraft spark plugs
About 1500 miles ago I started throwing a code signifying a cylinder 3 misfire. The truck would bog down real bad and then after 5-6 seconds of no power it would return to normal. I tried replacing the COP (both with new and then with one from another cylinder) and plugs but no resolution. So I talked to the local ford service manager and he said it sounded like intake manifold problems.
Replaced the intake manifold and no more codes were being thrown.
1500 miles later and today the truck started having a hesitation/shudder when I was sitting in a drive-thru. I put the truck in neutral and park and neither solved the issue. With the earlier issue, when I would put in neutral and increased rpm, the issue would resolve.
I pulled out of the drive-thru and the hesitation was consistent no matter what the rpm or speed. The truck feels almost sluggish and lacks power. The hesitation is like 2x/second. When accelerating its almost like the rpms and speed hesitate, jump, hesitate, jump.
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99 F150, 4x4, 5.4L, 4R70W trans.
I am experiencing a shudder at speeds between 45 and 50 when trying to accelerate mildly - it usually occurs after slowing down from a higher speed.
It is similar to the bucking that occurs when you do not downshift a manual trans.
I am guessing that it is the torque convert clutch staying locked or the tranny staying in OD too long. The shudder will go away if I give the truck enough throttle to downshift or simply push the overdrive off button - which forces it to downshift to drive.
What is the probable cause?
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I have a 1998 f150 w/ the 4.6L V8
For months I have had a hesitation in this truck when i go to accelerate, and at times you can even feel a little buck with the cruise set at 70MPH. It has gotten worse and worse. When i start pulling a trailer good luck, it will do it but its terrible, hesitations and misfiring,
There is always a misfire/hesitation. Will Idle nice After its warmed up. Sat for 2 weeks fired it up and it had a HORRIBLE idle for at least 1-2 min. This is new now it wont idle when cold. Now I had one code Cylinder 4 misfire, cleared the code never came back 2-3k miles later still not back on -
replaced coil packs
New plugs
New wires
Fuel pressure test good
Checked the Heater hose - not leaking and nothing in the hole.
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I have a new to me 98 F250LD with the 4.6/4R70W. I have maintained this truck fro my FIL as best as I could get him to spend (neglected). Filter and fluid replace with Mercon VI last year due to 2-3 shift slip.
He gave me the truck after it would not climb a hill, just hit stall speed and would not move up a steep hill, as I understand it. I put Seafoam trans tune in hoping it would free up sticky solenoids or valves in the VB.
I finally got it registered in my name and drove it to work and back today. After about 25 miles highway driving it shudders pretty bad trying to climb a hill at low speed.
It seems to me that at this low speed, torque converter lockup should not even be a possibility. I do not have COP, but rather a single coil pack. I replaced the wires and plugs for Dad a few years ago, but some shady shop later told him that I didn't replace the left rear (to make an upsale I suppose). Not sure what they may have done in there.
I have scanned with my ELM 327 and Droid using Torque Pro, and the only Fault is EGR flow.
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I have an 01 4x4 Ext cab with the 5.4 auto. It just started to shudder in drive doing about 20-35 mph, it quit when I turned the OD off and has not come back yet. It also jumps in and out of OD while running highway speeds, kind of like hitting a bump or something like it. The shudder was in about 10 degree temps and not fully warmed up and the jump happens whenever I am at speeds around 60-75.
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My trucks been doing something weird. When accelerating around 45-55 mph, a couple seconds after it shifts to 3rd, it does a weird type off shake/shudder. Feels like I hit a small bump in the road. Also when coming out of a cruise to accelerate, it will Make a very violent clunk and then speed up. I'm thinking it's a problem with my torque converter but my mechanic says transmission and my buddy says rear end lol. I dropped the pan and there was some shavings but nothing huge and it was the first time it was ever dropped. After 90k miles.
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When I first bought my 2001 f150 a few mos ago there were no problems but I did notice once in a while it would give one little shudder when id accelerate. now all the sudden it shudders after around 20 mph all the way up to whatever the speed limit is. Then it smooths right out until I have to accelerate again. if I punch the gas and kick it down it will clear up but then it feels more like a surging going on.
I had the cruise set at 70 the other day and I had to slow down to merge to around 50 and when I hit resume it really started shaking bad and the service engine soon light flashed on and off for a few minutes then went off and hasn't came back on again. I took it to advance auto and no codes showed up. they said its probably the torque converter but after reading multiple forums I am not so sure now.
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I have a 1999 F-150, 4.2L V6 with 206,000 miles that recently developed a rear-end shudder/vibration. According to my door jam axle code (27) and the axle tag (3 37), I have what appears to be a conventional rear differential, even though most of my research would indicate this rear-end is for the F-250. In any case, and based on other online research, I changed the differential oil with a 75W-140 synthetic and added 4oz of a friction modifier. Now the vibration appears to be worse. It primarily vibrates when taking off from a stop, whether turning or not.
I have felt the vibration at speeds up to 60mph, but it is more noticeable at lower speeds. The vibration also seems to diminish after driving the truck for longer periods of time, particularly if at highway speeds. In other words, when I drive to and from work, which is about 30 minutes each way of mostly highway, the vibration is barely noticeable once I exit the highway and slow back down to 35-40mph. When feeling the vibration, if I decelerate, the vibration immediately ceases, but starts again when I accelerate. It's not as noticeable if I accelerate harder, but I generally don't do that. The gears inside the differential didn't have any noticeable wear, chips or slop/play. What may be plaguing my usual trouble-free F150?
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I have a 03 f150 2wd with the 4.6l. Recently it has been slow shifting into reverse(about 2 full seconds) and when it finally gets in reverse it shudders when it comes under load. The fluid is full and not burnt...
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I have a 02' f150 v6 67,000 miles. When I come to a stop, the trans shudders abit like the converter is still locked up. It then goes to stall in a few seconds. this does not happen all the time, fluid is clean. I understand there is a simple fix for this, or is this normal?
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I have a 2003 Ford crown Victoria with 137,000km (85,000 miles) which is in good condition overall. It runs well in the city and highway with few problems. I have noticed 1 issue with this car that is consistent. When it is snowing and below freezing it will hesitate occasionally on the highway at speeds over 45 mph. It does not put out any codes. I have sprayed the ignition wires with no change. I have not changed any ignition parts. I did over 500 miles on the highway this weekend in moderate rain with no trouble at all at temperatures around freezing. Today was snowing and below freezing with same problem on highway with occasional hesitation. In the city today with traction problems and tires spinning the ABS and Brake light came on. They were out when I drove it home.
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2003 Ford F150 XLT - Truck hesitates (or bucks) as the throttle is pressed. Not from a stop though. It starts / runs fine, but no matter how how fast, what gear, hot or cold, it feels like the fuel cuts out for 1/2 second. Also it is not a specific point in the throttle motion. It does it when it is halfway, 3/4 or fully depressed, but is not consistent. It does happen more frequently now than two weeks ago. I am not getting a check engine light.
4.6L V8, 5 Speed Manual 4x4, 74000 mi
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I have a 2001 f150 5.4 with 200,900 miles. Just bought the truck about six months ago off my dad when he got a new one. I am now experiencing what seems to be a slight misfire. With the hood up pulling the throttle around 2200 rpm starts making a loud knock. Above that rpm nothing and below that nothing. Standing by the tailpipe it sounds like a small backfire. It Idles really rough and when you get that sound out of the tailpipe it jumps like its hiccuping. And tailpipe is vibrating quite a bit.
Things I have done in the past month include replacing the pcv valve, changing spark plugs, cleaning throttle body, cleaning MAF, took down exhaust to check cats because i was experiencing a power loss and bogging. When the exhaust was off i punched the two rear cats. I ran a bottle of iso heat in the gas. Everything seems to have supported the power problem but now less than a week later i am starting to experience the knock and backfire type sounds.
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Recently purchased a 2000 ford f150 4.2l. started hesitating when i would try to accelerated stressed or when a.c on. if i drive it like a grandpa wont do it. filled up the gas tank and it completely went away. the second it went down to the 3/4 line, started hesitating again. mind you when it was full even with the a.c on and going 80mph on expressway it would not hesitate.
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97 f150 4.6 4x4, no check engine light, no missing or sputtering, however when I try to get going I can't get passed 2500 rpm and when it finally does its still kind of sluggish and can't pass as easy. Changed fuel filter. It idles fine and when I put it in neutral it will go up to 5000 rpm if I want.
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I have a 2003 screw 4x2 with the 4.6, 148,000 miles, and I'm not sure what kind of transmission. Recently when the truck would shift into second it would hesitate and I would feel a slight grind, but it only did it when it would shift at 2000 rpm, if it shifted at 2500 rpm it would shift fine. I checked the fluid level, it was full, it smelled okay, looked *fine.
After pulling a boat (19 foot bass boat...nothing too heavy) it started to shake violently when I'd take off from a red light. So I dropped the pan and changed the filter, The fluid was dark red and smelled a little burnt. I put 4qts of fluid in it along with some Lucas transmission fix. The shake during take off is gone, and the grinding while shifting into second got a lot better but didn't go away completely.
However, now the grinding into second has has gotten worse again, and if I make a right turn from a red light it grinds and feels like its slipping until it shifts. I am not sure why making a right turn would affect it but its definitely worse when i turn right, left turns are fine. I'm guessing my transmission is going out and I just need to get it rebuilt...
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I have a 2001 F150with the V6 motor, automatic transmission and 73k miles. It has begun having hesitation/missing problems at low rpm, 1000-1800 or so, and it feels like the engine shuts off for a fraction of a second. At idle and above that range it seems to run fine. Also, it only happens in Drive and when the engine is fully warned up - it does not do it when cold or in Neutral. Uphill, downhill, doesn't matter. There are no OBD codes. The spark plugs, air filter and MAF sensor have been replaced recently. I have OBD scantool on my laptop, but have not been able to use it yet.
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00 XLT 4.6 4x4 135k miles - New problem, on accelerating, truck hesitates for a couple of seconds before rpm's pick up. There is no stumble or bogging. It feels like I'm not giving it any throttle at all. And then it kicks in and takes off. It does this from a stop at idle, or at a steady cruise. Its an intermittent problem. No CEL. Air filter and fuel filter are about 3 months old. Haven't done any work to it since. Also, when there is less than a 1/4 tank of fuel, truck sometimes stumbles slightly off idle. Fuel pump starting to go?
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2001 F150 V8 4.6 Liter... I've been experiencing hesitation when first pressing the gas, stall at idle, RPM fluctuating between 1000 and 500 at idle and loss of acceleration. Had the truck read at autopart store and received a P0402 error and misfire is cylinder 8.
At this point, I've changed the the plug, COP, EGR valve, EGR Valve Solenoid and DPFE sensor and still have the exact same symptoms. I've also changed the plug for cylinders 5,6 & 7 as well. The check engine light is on, went off briefly after changing DPFE sensor, but back within a day.
Given the fact the error code is P0402 and some of the threads I've read, I thought the issue was centered around the EGR system, but I've replaced many of the components.
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Ive got a 2001 f-150, 5.4L, 121k miles. I've replaced the fuel filter, removed and cleaned all injectors, cleaned MAF, changed 2 faulty coil packs, and installed all new plugs.
No codes thrown, truck runs smooth. Problem is intermittent. It will act as though it's got no power, usually won't happen till it's warm. I can drive it for 2 hours, runs strong. Sometimes when I pull onto a highway and get on the throttle a bit, it starts to hesitate, rpm's go to about 3k and it hesitates, but does not miss. acts like trans is slipping but I'm positive it's not.
So when it starts to do this, it's constant. I can continue to drive and it's runs terrible, does ok if you barely use any throttle. But.... I can be driving 40-50mph while it's having this problem, toss it in neutral, turn it off and restart, and all the power is back, great acceleration, as if nothing ever happened.
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