Ford Excursion :: V10 - Engine Knock / Loud Noises Coming From Under The Hood
May 13, 2010
The wife drove the Excursion (V10) to work today and it ran normal and didn't have any loud noises coming from under the hood. When she started the engine to return home it immediately started knocking. This is not a ping, but a knock. Not a loud heavy knock, but much louder than a ping. It has a fast frequency, seems too fast to be a rod knocking. The frequency is similar to a valve issue, but the knock seems to be too heavy for lifters. Oil looks good. Just changed out 2 weeks ago. Truck is driven everyday.
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I have a f150 with a 5.4 triton I have noises coming from the engine loud when cold get quiet as you increase rpm almost sounds like the valves if you go under truck noise gets louder truck has less than 68000 miles.
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My 1999 Astro van recently started making LOUD rattling noises under the hood. No previous problems, ran great up till pulling into my driveway. It does have 160,000 miles on it, but has always been excellently maintained. Towed it to dealership where they told me that "by the sound of it" it would need a new engine. This van is fully loaded, power everything, leather interior, paint job is great, everything works. Breaks my heart that I may have to junk it. So, the big question is, junk it or get a new motor?
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I have a 97 Grand Prix GTP with 191,000+ miles. For the past couple of months, I have had a loud groaning sound coming from somewhere under the hood when I steer the car in either direction. This groaning is most noticeable at idle or very low speeds and when the car is first started up in the morning. It seems to get less noticeable at higher speeds and after the car has warmed up a while. Over the past few days, at idle/low speed and when cold, there is now more resistance when steering in either direction. Power steering pump or rack and pinion? (Hoping this is more PS pump than rack and pinion). The rack and pinion was replaced in 2009.
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My awesome 1990 Toyota Pickup (6 cyl., supercab), fondly named Ol' Rusty, has a measly 245,000 miles on it and still running strong. The one problem is that when it is very cold out such as this morning (-10F), I get a terrible noise coming from under the hood just in front of the steering column. It sounds like a belt rubbing, but I can't find it. It happens when I start going faster than 20 mph and goes away once the engine is completely warm. When it's happening, the speedometer jumps a bit. Interestingly, if I warm the truck up for 10 minutes or more so that the engine is completely warm, it still happens when I first drive the truck. Is this something I need to worry about or can I continue to ignore it like I have been for the last 3 years?
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Recently, with below 0 temperatures. there have been a couple of times where my van has trouble starting. I would turn the key forward and here a loud knock coming from the starter solenoid and nothing else. but after a couple of tries, it will crank and start right up no problem. so i figured maybe it just has to do with cold weather? but today it wouldn't budge at all. I've been doing some research and came across the possibility that my engine has seized.
I realized that after replacing the radiator, i never checked my oil level since my engine was over-heating prior to the fix and when i checked it today i found that it is a quart low. I guess, what my question is what would be the issue? is my engine really seized or is it the starter or solenoid? could it be some other electrical issue? what are the steps i could take in finding the problem?
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I noticed a rough idle after driving an hour with a 6000 lb trailer and stopped at an offramp. Had no performance issues to that point in an hour drive. Then I noticed a good amount of white smoke coming out of the exhaust. The idle felt just like when I had a contribution/balance code on #5 a year ago, and a new injector fixed that. Before long (10-20 minutes later) the idle got real loud, like a big knock/loud tick every revolution.
I had a bunch of stored codes, so I reset them and later found a P0281 - Cylinder 7 contribution/Balance and P0404 - EGR control circuit range/performance were the 2 that came back. I drove it 2 more hours to get home. It ran well under load, but coasting or stopped gave the loud knock, and stopped and idling was a rough, inconsistent idle. It even stalled on me 3 times when braking for a red light (auto trans). There was a lot of white smoke all the time, plus a little dark smoke on acceleration.
What would you recommend for troubleshooting steps? I could put a new injector in #7 and clean the EGR valve, but want to have a good idea that will fix it first. Is there a good chance I have a messed up piston in #7 now?
Codes I cleared:
P0148 Fuel delivery error
P0234 turbo overboost (i know i need to pull and clean the turbo anyway, unrelated to today's issue)
P0281 Cylinder 7 contribution/Balance
P0404 EGR control circuit range/performance
P0670 Glow plug (I had the module unplugged a while ago)
P0683 Glow plug (I had the module unplugged a while ago)
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So I was at my friend's shop today getting something done and since I wouldn't have to pay for it, I had him hook up the OBD scanner. Turns out the check engine light I've been having sporadically show up is P0420. After getting this, I had the sinking feeling of knowing finally what the problem was. Recently I've been having some very loud noises coming from my exhaust, and not from the tips where it should be. So we jacked up the car, and what do I find? The connection right behind the catalytic converter where it connects to the rest of the rear exhaust was compromised. Apparently I had scraped the exhaust a couple times too forcefully and it separated at the flange and the gasket is no longer sealing. So here's my question. I have the TRD CAT-back exhaust. Is there a generic universal gasket that I can use to replace the leaking one? Or am I looking at needing to find a shop to make one?
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So this just started happening last night and I haven't had time yet to get the car in a rack. There is now a fairly loud knock (changes frequency with speed) coming from under my right foot while coasting in gear. It does not affect steering, braking, handling (from what I can tell), or acceleration. The knock it not there while coasting in neutral. My concern is that it may be a mount that is loose.
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My Explorer overheated yesterday. Found a very loud hissing sound coming out from under the hood. Let it cool off filled it with antifreeze, started it up, started hissing again. Found the thermostat had broken. Replaced the thermostat. Filled it up again. After replacing the thermostat I found out the hissing sound was coming from the plastic thermostat housing. Replaced the housing. Again I refilled it with antifreeze.
Started to let it warm up and noticed liquid dripping out of the exhaust pipe. Checked it out. Had a green color to it. Then I noticed the coolant resivor was full up to the cap. I did not fill it up past the full line on the side of the resistor. Tried removing the cap.
Found out it had a ton of pressure under it. Bled off the pressure. Refilled it again. Did not put the cap back on. Tried starting it. Instantaneous geyser. Runs like it is missing on 1cylinder. No oil in the coolant that I can see. No coolant in the oil. Could this problem be caused by a blown head gasket of a crack in 1 of the heads or in the block?
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On the way home tonight, the Ex started to make what I can best describe as a screech/squeal. It sounds a little bit like a pulley spinning against a stuck belt or a motor that ran out of grease. I heard it 4 times and it lasted about a second or 2 each time. It seems to be coming from under the hood. The only common variable between all of the occurrences is a speed between 5 - 20 mph.
Belt has been replaced recently, when I looked under the hood all pulleys were spinning normally. The only thing I can think of is maybe it's the re-manufactured power steering pump that I put in after the redhead box install or the a/c compressor. When the compressor is running it makes a ticking noise. Maybe it's finally done and the screech is it starting to spin up when it engages the pulley?
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I have a 2000 2wd with the 5.4 in it. I tow a travel trailer and loaded is 6500lbs. Today leaving the campground I had to climb an extremely steep hill as soon as you left the campground. No time to build speed. The old Ex made it, but I was definitely worried. The truck ran fine the rest of the 2 hours home. I went to back my camper into its spot to store, and smoke started coming out from under the hood. When I crawled under it, tranny fluid was leaking on the ground. A pretty steady drip. I let it cool down, added fluid and drove around. Didn't leak anymore. Did the tranny just get hot and had to burp? The drip was coming from where the tranny connects to the motor.
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the other day i was driving with no music on my GS and i noticed every time i came to a complete stop, the brakes would produce a weird loud knock sound. it was rainning so i thought it would be from that... but then after driving it roughly 5-7miles the sound stopped... then since i noticed it, i hoped on my corolla to see if it had the same thing but no... only on my GS.. is this normal?
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I have a 2006 Subaru Outback. When I start it, it makes a constant rather loud rumbling noise that seems to be coming from the rear of the car. I can feel a little vibration through the steering wheel, but when I put the car in neutral the noise/vibration goes away.
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It's cold and raining quite hard out and I just took my car out to the store and when I pulled into the parking spot a very loud squealing noise began coming from under the hood (sounded like driver side). I turned the car off and restarted and it was still there. I turned it off again and started it and it was gone. I drove the car home without issue and restarted a couple of times with no noise. The car ran great otherwise. What that was? I know very little about cars. It scared the crap out of me--it sounded quite loud--more of a screeching sound.
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So my '01 E350 has been fine but tonight when I went to start it I didn't get a WTS light and the SES light was on and there was a weird number on my PHP Hydra that looked like r5 ? This happened a few times back to back so I tried starting it and it just cranked and cranked. Wtf? So I started pushing the button on the chip and all of the sudden I got the WTS light and the hydra flashed, now the chip was on tune 10 instead of 5 where it was when I parked it. I should also note that during these episodes there was a fairly loud clicking/clunking sound coming from the drivers front under the hood when I toggle the key on.. Sounds like maybe a relay? Louder than I recall ever hearing.
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This is a 2000 EX with 146k miles on it bone stock. I have not done any of the regular maintenance on it yet or even gotten to really check this problem out. I am not driving it at this time mainly due to this problem.
The noise is heard the best at the rear of the engine and underneath the truck as the video shows. It seems to slightly change in sound (maybe a tad bit quieter) once I put it in gear (drive and reverse), I have not really heard a change in it after the truck has warmed up either. It does not sound at all really metallic to me..
[URL] ....
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A little background info...up until about 6 months ago my 01 Ex V10 was a grocery getter for the wife; only got a few thousand miles a year for the most part. Since we moved from Washington state to Texas it has turned into my daily driver (after a 2500 mile drive towing 8k trailer).
A couple of weeks ago we were running errands and after we got home there was smoke coming from under the hood, but I couldn't pin point it. I let it be because I figure it would let me know when something was really wrong. A few days later it did it again but this time I found the problem; transmission fluid was leaking out of the bell housing onto the y-pipe. I did my research and come to find out it is most likely the front pump seal that got soft from overheating. So my buddy and I drop the transmission and replace the seal. Put it all back together and everything seems great.
Another week goes by and we have driven the Ex fairly extensively around town and even took a couple short day trips and everything is great. Then as we are turning onto an on ramp to get on the highway I give it gas to speed up and all of a sudden the RPMs climb like it dropped into neutral. I had enough momentum that I got over onto the shoulder and started to check thing under the hood. Looked like I was low on trans fluid; ok so I added a quart. Put it in "D" and still nothing. Then I try "1", "2", "R" and they all work fine.
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The wife came home with a really loud screaming noise coming out from under the hood. I used my stethoscope and I'm 95% sure it's the alternator. It was a pretty easy removal process, sending it out to be rebuilt tomorrow. I guess at 90k I have no reason to complain.
I chose to get it rebuilt because of info that I had heard true or not, that Toyota alternators have an internal clutch and aftermarkets may not work properly.
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I have a 2007 Camry XLE with 30,000 miles on it purchased new.I stated it up the other day after setting all night it had a very loud knock in the engine I shut it off and had it towed to the dealership. They started it up and wanted to know what happened they said it sounded like a rod out. They keep it several days and ended up doing a top engine flush and then replaced the spark plugs. They said it was a carbon build up.I asked if they suggest any thing to keep this from happening and they said they do not recommend using any thing. I thought carbon deposits were supposed to be a thing of the past. Does this still happen.
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So I just picked this car up, (2000 20v turbo passat) 93k miles and I did a tune up (plugs, air filter, oil change w/ oil stabilizer, and injector cleaner) when i was out beating on the car a little, afterward I got to a stop sign, and i heard a VERY LOUD noise coming from the passengers side under the hood, it almost sounded like a loud motor, or the turbo but it was too loud to really determine... it was only there for about 10 sec then turned off but came on again about 1 min later. is this a bad bearing in the turbo? or what might it be?
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