Ford - Expedition :: 1999 - Loud Humming Noise Coming From Engine Bay
1999 ford expedition 5.4L ....I have been hearing a loudish (I can hear it in the cab) humming noise coming from the engine bay. I don't hear it when the truck is cold (1 to 5 minutes after starting), seems to get louder at it its peak (the more I drive). When i open the hood, the humming is coming from the intake. I am a pretty handy guy, just at my witts end right now....not sure, but I was thinking brake booster?
View 3 RepliesFord - Explorer :: 1996 - Rear Differential Was Leaky / Loud Whine Noise In Rear
Well i picked up a 96 4x4 with the 4.0 a few weeks ago and been fixing stuff weekly that i find wrong. One thing i noticed was the rear diff was leaky but couldn't get the fill plug out so left if for now. Last night my wife was on interstate and it just started making a loud noise so she pulls over calls me. I get there and drive it and it makes a woowoowoo noise and it got louder as speed increased. She was 3 miles from the exit so i drove it about 15-20 to get it off interstate than another 2 miles to her sisters. We let it sit for a few hours and found a flatbed to haul it home, and when we finally got home i drove it off the flat bed and now it was making a loud clunky noise. Parked it in drive till today. Cracked open the rear and no fluid came out.
Inspecting all the gears looked good no metal in bottom so i went and got a new rear cover and 3 qt. of fluid. Put it back together and the woowoowoo was still there but seemed to slowly go away as i drove it around the block. So what else could be going on here or do i need to drive it and warm up the fluid so it circulates? I also noticed a sheeee sound like metal on metal when braking but i changed all 4 rotors and both pads last week but i noticed the brakes in the rear that look like drum brakes was bare but i assume that is only for the ebrake so didn't bother changing them yet. Could those be hitting the inside of the rotor and making the metal to metal noise?
Ford - CV :: 1996 - Loud Knocking Noise In Engine
I recently started having a very loud knocking noise in my engine and I can't place it. Mostly due to my lack of car knowledge I can only trouble shoot so far. The following conditions are what I can really only go from:.
- when I'm in park or neutral the knocking happens in about 5 beats per second.
- while idling in gear it almost goes away.
- while driving it increases in frequency and intensity the higher the rpms, until it switches gears, then its dull until I get closer to topping out another gear.
- No real functionality of the car has changed.
- I tried doing a mild brake torque, in both drive and reverse, and the engine did not move.
- the knock is pretty hard to locate exactly but seems to come from the passenger side.
I'm hoping it's not to serious because I just filled the gas tank.
Ford - Explorer :: 1996 - Strange Noise Coming From Engine?
It doesn't happen all of the time and it's not consistent as to when it occurs. Originally, I thought it happened when it was cold outside, but since it's been pretty cold here lately, I have not heard it. Also, it has occurred when the engine was warm (after driving for 20 min or so).
It sounds like it's coming from the engine block, but I'm not 100% sure. I have a 1996 ford explorer 6 cylinder 4.0L engine with approx 249,000 miles.
Ford - Explorer :: 1996 - Engine Over Revving Type Noise When Slowing Down
Yesterday after about a 2hr drive as soon as I got off on the interstate exit and started to slow down my Explorer made this horrible sound that almost sounded like a power drill or the engine over revving. Then it did it every time I would slow down for anything after that. At first I thought it may have been the transmission so I took straight to a tranny shop, and by the time they got around to looking at it (several hours later) they said they could not find anything wrong with it and could not reproduce the noise. So I started driving home and about an hour into the drive it started doing it again. It only makes the noise when you take your foot off the gas. As soon as you touch the gas pedal it immediately stops. Someone told me it may be the bearings in the tension pulley, does this make sense ?
View 10 RepliesGolf IV / Jetta IV :: 2005 - Loud Humming Noise From Engine At 75-80 Mph?
2005 Jetta. The car makes a loud deep humming noise once I hit about 75mph, and goes away once I get to about 82 or so. I've taken it out of gear and matched the rpm I get at those speeds, and I don't hear the noise at all. It's only when I'm in gear. What this could be?
View 4 RepliesGolf IV / Jetta IV :: Engine / Exhaust Makes Loud Humming Noise At 75 To 82 Mph?
2005 jetta. On the highway when I hit about 75mph I hear this loud humming coming from either the engine or the exhaust, I'm not sure. It disappears immediately once I cross about 82mph. What could this be? Why such a specific range?
View 2 RepliesToyota - Camry :: Loud Humming Noise Coming From Engine When Accelerating
I am trying to diagnose a sound that is coming from my 2001 Camry 2.2L. When I accelerate there is a load humming noise coming from the engine. It happens at all speeds and only when I accelerate.
View 6 RepliesLexus :: Loud Whirring / Humming / Whining Noise Coming From Engine
I have a 2006 lexus es 330 that just turned over 90,000 miles. My dad and I have done the regular maintenance on it so far but this weekend after a 3 hour drive, I turned the car back on and a loud whirring/humming/whining noise was coming from the engine. It gets slightly louder with acceleration, but I can barely hear it once I've picked up speed (but it's still there.) It still happens when I am in neutral. It sounds like it is coming from the passenger side of the engine. Close to the power steering pump area, but the power steering fluid is full (although it is a very dark/black color and has a slight smell...not sure if this is normal.) I'm not having any trouble or hesitation while steering. The rack is operating smoothly and it is not leaking. I plan on taking it into the shop but wanted to go in educated.
View 3 RepliesFord - Explorer :: 1996 - Won't Start - Loud Click When Key Turned?
I have a 1996 4.0L Sport - 2 weeks ago, stranded wifey at food store, had it towed home, and replaced the starter solenoid - it started and ran for about 4 days, and then stalled once but started back up (it was cold out)
Another day, I went out to start it, and the same thing... loud click when you turn the key to start position, seems to be coming from solenoid again...
so, I thought, ok, the parts a week old, but sometimes they do fail...
So, I bought the best one around: standard "blue" which had brass on the back to best couple to ground, etc...
Put it in, and reconnected everything - and the SAME THING... clicks every time I turn the key. (single click for each time I try to start it....
questions is - how can I check these to see if I had 2 bad ones in a row, or would there be something else wrong?
Ford - Explorer :: 2001 Engine Randomly Stalled - Not Running Properly?
Yesterday my lady's 2001 Explorer Sport with a 4.0 SOHC was running like a top and then suddenly after sitting parked for a couple hours it would crank but not start. After letting it sit for an hour or so it cranked and seemed to run ok. She drove a mile or so and it died at a stop light. It wouldn't start for a few minutes and then finally started but in limp mode. The engine was shaking and barely able to idle so she pulled into a parking spot and I came and checked it out and we had to have it towed home. This problem is just out of the blue suddenly with no warning.
Today I was able to get it to start but it shook really badly and was running like it possibly wasn't getting the right air/fuel mixture. There is no check engine light on. At one point today I realized that once it started and was idling horribly and shaking I could press the gas pedal just slightly and hold it there and the rpms would slowly go up and then the engine would smooth out. If I slowly gave it gas I could get the engine up to 3000 rpms and then it would hesitate and drop the rpms back down to 2500. If I try to rev the engine quickly it acts like the engine is flooding or starving and chokes and stalls.
It has 111k miles on it. She has only owned it for 6 months but it has ran flawlessly to this point, other than one random time that it just died at a stop light shortly after she got it.
I'm not familiar with these 4.0L SOHC engines and I'm not really sure where to start. The coolant was low, maybe 1/2 - 2/3 full in the radiator but she said that it did not overheat and she pays attention to her temperature gauge because she's had overheating issues in other vehicles in the past. This coolant has to be going somewhere. Hopefully it's not an intake or head gasket issue. We have not noticed any leaks and the oil was just changed last week and there is no coolant in the oil. The engine doesn't smoke at all either.
Maybe I need to buy a OBD scanner and check the air/fuel mixtures? I recently ordered a cheap ODBII bluetooth dongle for my android phone but the piece of junk only worked once so I have to order a different one. My girlfriend has to work in 2 days and I need to get this figured out ASAP.
Ford F-150 - 1997-2003 :: Really Loud Humming Noise Under The Hood
First off I have a 1997 F-150 4.6 with 205,000 miles on it.. stock engine and tranny. It's been a great truck and never given me any major problems. But recently something under the hood (wish i could be more specific) makes a really loud HUMMING noise (almost sound like a trumpet). For example- say im driving on the highway and i let off the gas, this humming noise will appear and it is very loud, but right when i give the engine some gas the humming goes away.
Or also when I am driving through town, when i come to a stop light, let off the gas to apply the breaks, this humming noise will come about. what i have to do is stick the truck in neutral and give it a big rev (which i do like hearing my exhaust so it isn't always annoying) and then it stops. note though, it doesnt happen every single time i let off the gas, however it is pretty frequent.
do yall think this is in the air intake system? thatd be my only guess because when i rev the engine it quits, but one thing is it sounds like it comes more from the passenger side of the truck, and it seems to occur more often when the temperature outside is cold. im completely stumped by this one, ive never heard anything like it.
Ford - Focus :: 2011 - Loud Humming Sound From Engine?
After I took my Ford Focus 2011 to the dealership for a free oil change I noticed a subtle, low hum coming from the car when I hit speeds past 40mph. At first it sounded like the engine of a louder car driving near me so it took me a couple days to realize that it was actually my car making the noise. I intended to bring the car right back to the dealership to complain about this but I kept getting preoccupied with my studies for my summer courses. It's been roughly 3 weeks now and the low hum has gotten a lot louder now and can be heard over music.
The noise begins when I approach 40mph. The noise is probably at its loudest at speeds of 40mph-70mph. The noise is made even when I am not stepping on the accelerator or using the breaks. I haven't tried putting the car in neutral at those speeds. What might be causing that noise? Although I don't really trust the dealership since my car seems to manifest a new problem after each visit.
Ford Escape / Hybrid :: Loud Whirring Or Humming Noise From Under The Car While Driving
2001 Escape 4x4, automatic trans 4x4
Getting a pretty loud "whirring" or humming noise from under the car while driving 30+ mph. It seems like a wheel bearing noise, but coming from directly under the center console area. My thoughts are either the driveshaft center support or the transfer case, I can't find much on it though.
Buick - Century :: 1996 - Humming Noise While Driving And Turning To Left
1996 Buick Century has a humming noise while driving at normal speeds and curving or turning slightly to the left only. It will not do this while turning left from a stop or slow turn, but only at moderate or hi-way speeds. You can make the sound while changing lanes, passing or curving to the left. This is only noticeable on actions involving left turn or merging motions.
View 2 RepliesFord - Explorer :: 1996 - Droning Noise When Car Is Hot
My 1996 Ford Explorer makes this dreadful droning noise - but only when the outside temperature is above 78 degrees and the engine is warm. This is summer 3 and it seems to get louder and louder each year. The doing is loud. I am embarrassed in parking lots. It does not matter if a/c is on, or the fan. The noise goes away with throttle. Which may mean the engine vacuum is involved in the noise.
View 4 RepliesFord - Explorer :: 1996 XLT 4.0 OHV Engine Temp Too Low
I recently acquired a 1996 Ford Explorer XLT with a 4.0 OHV engine 62K mile. During vehicle evaluation I found a small coolant leak on coming from the timing cover gasket. I had the timing cover gasket and water pump replaced by a trusted mechanic.
Upon receiving the vehicle from the shop I immediately noticed wildly fluctuating engine temps, going above normal to nearly overheat and then suddenly dropping too cold. This would happen as I am driving at speed or at idle. I replaced the t-stat with a fail-safe type and find that it still does the temperature fluctuation. Called mechanic and he recommended burping the cooling system. Freed air in the system by topping off during cold start and adding coolant till full, and the condition seemed to improve but not fixed.
The fluctuation is much more minimal now, but the engine temp is always lower than normal on the gauge display. Before the initial service, temp gauge read dead center at operating temp always. Now it always runs colder, no matter what. The heater works too, and sometimes it seems to affect the temperature when I engage the heater during driving after warmup, the temp will start fluctuating.
I noticed that the upper radiator hose is much hotter than the lower radiator hose. In this case, after a drive the upper hose had surface temp of 200 F and lower hose had surface temp of 130 F. I have heard of backwards water pump manufacturing and I am beginning to think that is culprit. I can see the flow indicators on the upper hose showing coolant flowing from the radiator to t-stat, but hose surface temps testing suggest that it is operating backwards to me. I do not have the original water pump to comparison.
It became apparent that the fan clutch may be sticking some. When I cold start (30 F ambient) the fan runs at high rpm for several minutes before slowing. Even warm start fan will spin up with engine until second or third gear, then spin down. Is that normal operation?
Ford Super Duty (1999-2016) :: Radiator Noise - Humming Real Loud Like Its Relieving Pressure
I have a 2011 F-350 diesel crew cab dealer said I had a radiator leak so they replaced it now after I shut truck off it starts humming real loud like its relieving pressure my temps and everything else seems to be ok...
View 1 RepliesPassat (B6) :: Resonating Loud Humming Noise
B6 manual, after 20k miles with Dunlop Sport Maxx 235-40-18 tires (still pleny of tread left, even on fronts) a moderately loud humming noise has developed, loudest at 35 mph but even heard at 10mph, with an irritating resonance of subwoofer-type. Noise changes somewhat with road surface, but not much. Not related to engine speed, gearbox, or radio. My next step will be to swap wheels.
For now, any thoughts as to the cause?