Ford F-150 - 1997-2003 :: Knocking And Vibrating - Gas / Throttle Pedal Noise
Apr 6, 2014
2001 F-150 4.2L automatic, 189k mikes. Gas pedal would do weird knocking/vibrating. It would do it at idle & under acceleration. Gas pedal would knock & sometimes slightly move or kick back at you. Felt like someone was lightly hitting it with a small hammer. Well there is not much to the gas pedal assembly; pedal, throttle cable & mounting bolts/plate. Looking under hood, a bracket from drivers side of motor was pushing back against firewall, which was pushing into gas pedal mounting bolts. I grabbed the bracket & it came off motor. Nothing else attached to bracket. Looks like it rusted off and was pinned between motor & firewall. Well, this fixed the gas pedal problems. But now i wonder what the bracket is & whats it suppose to hold??
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I have been having some major issues with my truck!
The whole truck is vibrating when on. When I accelerate I hear a loud noise like something is hitting a fan. I'm scared to even drive it. The rpm's have been jumping around.
What could be causing this? I already replaces Fuel filters.
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I have a 1997 f150 with the 4.6l triton that just started to make a squealing noise. I have replaced a couple of pulleys that were bad but that did not get rid of the problem. It only makes the noise when I give it some gas and it is coming from around the fan clutch area.
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The Throttle Body on my 2001, 4.6 L is making a strange whirring noise, when you puy your hand on the intake pipe, you can feel a slight vibration. The Truck idles and runs okay, with no codes. Giving it a little gas and the noise goes away. The last thing I did was clean the IAC with Gum Out Carb cleaner, the second or third time I've done this over many years, with no problems. I'm a little perplexed at the cause.
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I have a throttle body noise that sounds like a warble,It is sporadic and I think it should not be their. But I have heard some other f-150s make the same noise. Is it normal or is something not right.
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I have had a noise in the front of the engine of my 2002 f150 4.6 for about 2 weeks. On my way home my oil light came on made a knocking noise and shut off. The engine would not start back starter would engage but not turn motor it was seized. i called a tow truck and had it towed home. The next day just out of curiosity I tried to start it. It fired up ran and built oil pressure. If the oil pump froze will that make it . Can the oil pump make the engine act seized up?
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I have a 2001 F150 4x4 4.6L Auto trans. 96,000 miles... I purchased it in Jan with 93,000. About a month ago it started making and occasional knocking noise coming from the engine, this noise was heard at idle in park and in drive. when I revved the motor it would go away but as the idle settle back down you could hear it again. the noise would go away as I was driving and come back with no rhyme or reason, I put a stethoscope on the engine and it seemed loudest under the oil pan. The oil gauge is up between 5/8 to 3/4. Fast forward to now, When I start it I hear a scraping almost grinding noise that resonated thru the cab it has the same intermittent characteristics. I think I am going to remove the serp belt, remove the trans inspection cover next and see what happens. Oh I did put a scan too on it, no codes but did notice 1 long term 02 sensor trim was staying around -.618 if I remember.
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The last couple days my truck (1997 f150 4.6l) has been having starting issues. At first it would just turn over and not start then the battery would die. So i bought a new battery and yesterday now its starts sometimes but when trying to start it while its ttuning over it stops then starts turning and starts up. Then i drive wherever I am going when i get back in to start there's nothing.
Its not turning over at all but when i turn the key there is a loud single knocking noise coming from behind the dash near the passenger floor vent. Actually there ate two noise from the same area, one when i initially trun the key and another when i release the key. But after just sitting there doing this it will finally turn over and start. What this is, there are no codes being thrown besides my dreaded P0401 which i cant seem to get rid of either. Ive changed every part that has to do with the egr system and cleaned the throttle body replaced vacuum lines and still the code.
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Just came back from lunch and the car seems to be vibrating more than usual. Engine is making some weird knocking noise. I think I also smelled fuel coming from the car. Could it be the cam tensioner?
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I have a 2003 F150 4x4. There is a whining noise when going 45 to 55 mph (at least that's the only time I can hear it), but only when the gas pedal is engaged. I thought I'd work back to front and I took off the rear differential cover, cleaned it out and changed the rear differential fluid. That did not reduce the whining, but I think those spin when the wheels spin anyway. The whine only happens when the gas pedal is engaged.
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I was pulling out of my driveway (it's quite steep) in 4x4, turned onto the road and heard a clunk.
I then took it out of 4x4 and continued on. I noticed it was vibrating more than usual. I turned out of a friends driveway (not in 4x4) after that and thought I heard another clunk. The vibrations seemed to get a lot worse after that.
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Occasionally the car will make load grinding noise that sounds like a garbage disposal:
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When this happens the gas pedal is also vibrating. It will go away when the car is stopped and may not return for a few days.
It's 2008 accent SE with a performance chip.
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t's a '00 extended cab swb 4.6L with 4r70w trans. I have a Hotchkis TVS 2/4 kit on it. It's been lowered 3 years now and I've never had any real issue. But I started noticing a small vibration through the floor so I took my driveshaft out to be balanced and new U joints installed. Ever since then I've had an audible "hum" from the rear whenever I go over 75mph. It only does this under load (hill, etc) and I don't hear anything until then. The driveline shop told me it was my pinion angle and I've tried shims with only slight improvement. I'll replace the driveshaft after I do a motor and trans swap down the line, but it's out of the budget for now.
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Why my truck shake/ vibrates only at high speeds above 65mph. Once I drop below 65 is smooth as can be.
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I own a 2000 F250 7.3 Powerstroke 4x4. The only aftermarket engine modification I have is a Tymar intake. The problem I'm having started about 6 months ago in a very erratic fashion. I would pull up to a traffic signal and as the light changed to green, without warning the truck would have no throttle response. The engine was running fine; there was just no response as I stepped on the accelerator pedal. Usually when I put the transmission in neutral, revved the engine a few times, the throttle would come back on line. This happened 4 or 5 times over the summer and then went away completely until today. Today it came back with a vengeance. At one point I had to shut the engine down completely to restore throttle response. It's a bit unnerving when it happens in the middle of a busy intersection. I was told that it may be the throttle position sensor. Does this sound correct and does it need to be replaced?
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I have a 2002 F250 4x4 Powerstroke with Automatic. I have been having off and on issues for months with the throttle going dead. This only happens when I start it, if it works when started it will continue working until a different start session.
I have replaced the pedal several times before learning how to check its output with a meter and am quite sure that is not my issue at this time. However, when the pedal is depressed the check engine light lites up and nothing happens.
I am thinking it must be the computer itself, but was told there is another sensor or module under the hood that could cause the issue also which is several hundred dollars to replace as would be the computer.
Is there a way to test the computer, and what is this other module/sensor if it exists that could be the issue? Unhooking and rehooking the battery to reset the computer is no longer working to buy me a few more weeks, is there a simple way to reset the computer to try?
I love this truck when the throttle works but I am getting tired of paying on a truck while having to borrow a vehicle to drive to work.
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My 2000 F150 started knocking, it does this after I get up to speed and let off the gas a bit, it will know as I push on the gas again but if I push heavy on the gas it dose not knock, What could if be? By the way it is a hard knock not a pinging sound.
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I have been fighting this surging issue for a while. I noticed when it starts to surge i could turn off the a/c and it would quit. It only surges when i am only at a very min throttle. Does this make sense? What can I do to fix it?
1999 f250 4x4 auto 256K miles....
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I am having a strange issue with the transmission in my 02 F150 with the 5.4, but it only happens when it`s cold outside and the truck is warm, typically after shutting off the truck and starting it back up (like if I stop at the store for something).
Basically, it clunks around at low throttle, especially around 50-55 MPH. Sometimes, it will act strange as I roll to a start, but typically it`s fine up until there. If I hit the gas it shifts just fine, but it acts up at constant speed/throttle.
I am hoping that its a sensor or something that's confused vs. needing a rebuild or new torque converter.
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My 2003 F-150 knocks pretty bad on my early morning cold start ups. It only happens if it had set for a while. Its not a knock coming from the bottom end it sounds like its coming from the top end, cams cam followers... etc. I was wondering if I should be concerned. I am running 5-20 mobil 1 with a motorcraft filter. My truck always seems to use a half a quart to a quart between oil changes too. The truck only has 60,000 pretty mild miles on it.
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I have a 2001 F150 4x4 5.4l with 105k miles. I started it up today to go to lunch and it made a knocking sound on start up that lasted maybe 20 seconds. So i shut it off and checked oil. All ok. Started it up again and it knocked but not as long as it did previously. I started to drive and higher in the rpm range before the trans shifts it makes the same knocking sound. Left off the pedal it goes away then rev it again it doesn't make the knock till around 2000rpm mark it I remember correctly. It makes the noise in all gears, parked or driving. It runs great, no power loss or misfire. Could it be a spark plug on the verge of blowing out or is it time for a new motor? I am going to look at it more tonight when I get off work.
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