Ford F-150 - 1997-2003 :: Vibration Most Noticeable At 55 - 60 MPH

Have a 1997 2wd F-150 XLT auto trans with 305,000 miles that has developed at vibration that is most noticeable at 55-60mph. It seems to start at about 35, but at 55 you can feel it in your seat. When it's vibrating shifting into neutral doesn't change anything.

Drive shaft u-joints: two rear replaced not too long ago (5+ years?), front joint by transmission seems to move freely, but isn't excessively sloppy, carrier bearing okay. Have done the following with no improvement:

Re-balanced all tires, no problems noticed during the balance;
Replaced first right and then left rotor and wheel bearings, no change.

Several mechanics have driven it and made different pronouncements, it's not: transmission, rear-end, tires, u-joints or carrier bearing. One mechanic ran it while up on his lift and didn't see a driveshaft balance problem. Last suggestion was that the left wheel bearing were "on their way out", so they were the most recent change. It's drivable, but not fun and it produces a lot of noise in the cab.

View 14 Replies

Ford F-150 - 1997-2003 :: Significant Pull To The Right Most Noticeable On The Highway

My 98 F150 4WD with 83k on it has a significant pull to the right most noticeable on the highway. I have to keep the wheel turned to the left to be able to go straight. It use to be intermittent but now is constant. Had a frt end alignment done twice with no change. Recently after a long drive on the highway on a crazy hot day, I pulled into a rest area & noticed the L/F wheel was very hot to the point where I thought the plastic center cap might start melting.

The R/F wheel was only warm. This makes no sense to me because with something causing the L/F wheel to heat up I would think it would pull to the left. This has bothered me so much that I've driven with 10psi less in the L/F wheel hoping it wouldn't pull to the right so much but it had no effect. I did recently have the left upper control arm replaced because it was clunking. It was doing this pulling prior to that & it continues.

View 14 Replies

Ford F-150 - 1997-2003 :: 1998 - Engine Ticking Noise Very Noticeable At Startup

I have a 98 F150 Supercab 4x4 with 4.6 and an auto trans. I have 107,000 miles on the truck. Recently developed a engine "tick". Upon start up the "tick" is very noticeable. Seems to go away after its been driven a few miles and everything comes up to operating temp. I have checked the exhaust manifolds, all studs and nuts are still there. There are no noticeable holes that I could feel in the manifolds. Read some other posts here that have the "tick under load". Mine goes away once everything warms up. What to look at or for?

View 8 Replies

Ford F-150 - 1997-2003 :: 2001 4.6L Keeps Turning Over But Not Starting / Fuel Pump Makes Noticeable Buzzing Sound

My 2001 4.6L F-150 has been sitting on the driveway, used once every 2 weeks or so for the last 3 yrs. I came to start it a few days ago and it kept turning over but not starting. The key security chip is working, battery is charged, all plugs are firing, fuel pump fuse and relay check good. When I turn the key to ON, sometimes I hear the fuel pump priming, other times it doesn't. The times it does prime, the truck fires right up.

The times it doesn't prime, engine won't start. When the pump does prime, and while the engine is running, the pump makes a noticeable buzzing sound, much louder than normal. When the pump primes. fuel pressure measures at 42psi in the ON position, 36psi with engine running, and 46psi with engine running and vacuum hose removed. I believe all these are within specs.

My question is this: Is it safe to assume that the pump is going bad and will eventually fail completely? My second question is (and I know this can be debated til the end of time) should I get the Motorcraft or aftermarket? I have Airtex, Spectra, Carter, and Delphi available locally.

View 4 Replies

Ford F-150 - 1997-2003 :: Violent Shaking Under Acceleration

I've had this truck since 2011. Ran great when I got it. Ive had problems with the calipers and I've replaced both the fronts. I keep up on changing the oil regularly. The manifolds started rusting away a little over a year ago. Not happening... The shaking started recently after I pulled a trailer with 2.5 tons of shingles on 2 separate occasions.

That being said, I can feel a little shaking while idling. It was really only bad between 500 and 2000rpms. After 2000 it almost felt like a turbo and it would accelerate really fast and smooth until the gears switched. I figured i should change the oil. Now the shaking is more violent.

Its a 2000 f150 5.4 v8....

View 9 Replies

Ford F-150 - 1997-2003 :: Brakes Sticking And Truck Shaking

I have a 2001 f-150 the brakes are sticking and I get a bad shake which seems to come from the front and rear of the vehicle. It doesn't do it all the time but when it does it slowly gets worse. I have replaced 3 of the 4 calipers and will be replacing the forth, but not much is changing.

View 9 Replies

Ford F-150 - 1997-2003 :: Shaking / Wobbling When Bumps In Road And At 40 MPH

I have a 99 F150 4x4 it recently started shaking badly on the front end at about 40mph but levels out at about 45 to 50 mph or if slowed back down to 35mph. I can't find anything worn or loose except the sway bar bushings are completely gone on both driver and passenger sides. I have read about the "death wobble" but can't find anything else worn out! I can do most all repairs and checks myself.

View 2 Replies

Ford F-150 - 1997-2003 :: 2001 - Started Shaking At About 30 Miles?

I have a 2001 f150 7700 edition. The truck has 118,000 miles and i've owned it for the past three years, the trucks great and really reliable. I drive the truck every day 50 miles to my college and about two weeks ago my truck started shaking . I had just got off the highway and made it to a stop sign. I then took off and when I hit about 30 miles an hour the truck started shaking but when I hit 40 it stopped.

I said whatever and ignored it. now it does it pretty much anytime I go past 30 miles in hour. My tranny shifts good. I checked the fluid and it was normal. smelt it and it didn't smell burnt or anything still pretty red. Some days its worse then others. Also, no engine lights, tranny lights, no obvious lose parts, tires are good. It only shakes when I give it gas. I let off the gas at 80mph and it doesn't shake at all. Which is why I'm confused.

View 3 Replies

Ford F-150 - 1997-2003 :: Replaced IAC But Still Shaking - Replacing Exhaust Manifolds?

So i replaced my IAC(Idle Air Control) Valve and the idiling is much better! However my shaking/jerking has not stopped. I have found the problem which is the exhaust manifolds! I was wondering if when i replace them which i am probably going to get headers should i use metal gaskets?

View 14 Replies

Ford F-150 - 1997-2003 :: Engine Starting Pulling Down And Shaking Heavily?

So i drive a 2001 F150 4.6L and over the last couple of years it has started pulling down and shaking heavily. I have taken it to mechanics and it always gave a code as a miss. well we replaced the coils and the plugs and of course it still has the problem. finally we did a compression test and it shows that #3 and #5 have no compression and the mechanic said it was either a blown head gasket, a valve or a cracked head. it has 230K miles on it so i was wondering what your thoughts on it were and also if it would be cheaper just to swap the motor.

View 2 Replies

Ford F-150 - 1997-2003 :: 1999 XLT - Cylinder 4 Misfire / Shaking When Accelerate Or Idle

Ford F150 1999 5.4 XLT... I've had this truck since may 2013 from the 2nd owner who only drove it

occasionally to make sure it ran. For the last 5 weeks there have been two occasions where my service engine light appeared...once on 12/28/15 and again today. Both read cylinder 4 misfire. Upon searching this piece which I'm assuming is the boot that covers or houses the spark plug is very unsecure and causes a shaking feeling as I accelerate or idle. Being so far back I can't reach it with extensions on a ratchet and barely fit my hand back there. Having to consider taking it into a shop for further analysis and repair but I'm trying to save as much money as possible as I am in between jobs since mid January. I have a picture attached...

View 4 Replies

Ford F-150 - 1997-2003 :: Barely Runs / Stumbling And Shaking / Got P0340 Code?

The vehicle has 160,000 miles and had been running great. I pulled into traffic, put the petal to the floor, and it started stumbling and shaking. I pulled into the parking lot where I was going and expected it to die but it maintained idle but shaking real good. When I started it back up the SES light came on. I was able to coax it home but there was no acceleration, wouldn't go over 40 mph, and was still shaking bad.

I used my code reader and got the code P0340, camshaft position sensor. I replaced the sensor but it is still doing the same thing and still showing the code. It will start if I push the gas while cranking but it won't rev over 2K. I am thinking it jumped timing but most of the threads I read say they have never seen this on these engines. I want to get some opinions before I start removing the timing chain cover.

View 3 Replies

Ford F-150 - 1997-2003 :: 1999 - Stuck In Second Gear - Shaking / Misfiring And Stall Out

I have a 99 f150 with 171xxx miles and the other day it suck in second gear and start shaking and misfiring and would stall out. I took the truck and got the codes read and it threw codes for the tcc solenoid and shift solenoid. I put both in the transmission and it kepy doing the same thing. I check fuse 24 under the hood and it was blown, I replaced it and everything worked fine for a day then it blew the fuse 2 more times and i cant figure out why it is blowing that fuse. I cant find any shorts maybe pcm??

View 5 Replies

Ford F-150 - 1997-2003 :: Shaking And Idle Bounces Between 500 And 750 - Codes P0172 And P0174

2003 f150 5.4, 4x4 ... Truck is shaking pretty bad, idle bounces between 500 and 750, and its throwing p0172 (rich on bank 1), P0174 (lean on bank 2), and it looks like a misfire on cylinder 8 judging by that power graphy thingy. I'm going to check for a vacuum leak tomorrow on the PCV.

View 2 Replies

Ford F-150 - 1997-2003 :: 2001 - Shaking In 1st Gear When Try To Release The Clutch Slowly

I have a 2001 ford f150 4x4 xlt and it seems to be shaking violently in first gear when I try to release the clutch slowly. The person i bought it from said he had a new clutch put in this year So i don't think its the clutch. What could be the cause of it before I take it in to be checked.

View 2 Replies

Ford F-150 - 1997-2003 :: 2000 - Check Engine Light Came On / Truck Started Shaking

I have a 2000 f150 4x2 5.4 168k... Check engine came on,started shaking, weather was really cold. RPM would be a little high then low then back up. Especially when I turned on heater. Felt like truck would die but never does nor does it have issue starting.

So far, I have replaced two oxygen sensors inside engine,all coils, spark plugs, fuel filter, had injectors cleaned, intake cleaned. Truck runs better but, light came on a day later again. I can feel the tiniest of shaking going on and, cold mornings still make RPMS a little unstable. I was driving truck on highway at about 60 mph when a slight tug was felt and Truck check engine came on. I feel truck heavy, once it warms up completely, a little lighter.

Codes came up at auto zone as P1151
But I'm running out of options and frankly, money to fix this truck.
Checked the MAF and looked okay.

I'm with minimal skills.

View 13 Replies

Ford F-150 - 1997-2003 :: 1999 - Replaced Spark Plugs - Started Shaking And Missing?

I have an 1999 f150 4.2l only 82,000 original miles.i have had truck since new .i just replaced the spark plugs for the first time.i used autolite plat. I also changed fuel filter the truck started to run like crap now shaking and sorta like missing.i pulled the plugs again rechecked the gp reinstalled them installed new wires still runs like crap.went out bought new motorcraft plat. plugs gapped at .054 still runs like crap..so i checked the gap on original plus that have been i the truck since new the gap on them are .074-.075. should i try and gapp the new ones to this the truck ran like a dream with the original plugs at this gap????

View 14 Replies

Ford F-150 - 1997-2003 :: Terrible Rattling / Shaking At 70 MPH - Truck Starts Riding Very Rough

We just purchased a 2003 Ford Lightning with 114,000 miles on it. Had oil changed. Had to get floor master mufflers attached back on. Ever since then now when it gets up to 65-70 mph it starts a terrible rattling noise , almost sounds like a spark knock. Truck starts riding very rough. We have have only run premium fuel and even put in some gas treatment to see if this works, it hasn't, only getting worse. We are currently out of town and trying to make it home but don't want to cause any major damage to it. All the gauges are fine. Just the rattling and shaking...

View 7 Replies

Ford F-150 - 1997-2003 :: 1998 F250 - Front Axle Stuck Locked In And Drive-line Shaking

I have a 98 F250LD, its a Lariat, so everything electric/auto. Shift on the Fly 4x4, 5.4, 188K, Factory rear air suspension. Typical Minnesota rust. Anyway, I just noticed in the last 75 miles or so, a drive-line vibration. There is nothing until 39 MPH. Then from 39-41 MPH there is a decent vibration. Stops until 50, then from 50 MPH up it is a steady vibration. I have already changed the u-joints in the rear shaft. I have pulled/wiggled on everything else I can think of with no luck of finding of anything loose.

One thing I did notice, is that the front axle is locked in all the time. How long it has been like this: years for all I know... I can flip the switch from 2wd to 4H and 4L. It all seems to work fine, I hear clicking, the 4x4 engages, the proper lights come on/off. The front axle will pull when supposed to. The transfer case seems to be working fine, but the front axle won't disengage. I am hoping this can be fixed cheaply/easily (DIYer), and also hoping this explains my low fuel mileage.

Front axle? Where to look or what to try and fix for the vibration?

View 2 Replies