Prius (2001-03) :: Disconcerting Noises Coming From Engine
Dec 28, 2012
Disconcerting noises from my engine that began suddenly around 198,000 miles.
Nobody listening seems to think it's bottom end, and I did check valve clearances and found them all to be on the tight side (ten within tolerance on the tight side, and six just-out-of-tolerance tight).
I also saw what looked like less oil on the #4 exhaust cam lobes and I'm wondering if there could be some kind of oil delivery issue. (#4 exhaust was also an area that had stuck out to the stethoscope before I took the cover off).
There's a dark brown varnish pretty much everywhere on the top deck (photo in other thread), pretty much as a thin coat that doesn't rub off easily, but I saw a few flat flakes coming off here and there, and wonder if that stuff might occlude an oil passage.
I've picked up a product called Auto-RX that I've never used before. From reading its patent I think there at least might be something to it (an ester of a fatty acid that's claimed to dissolve varnish and sludge without the other effects of more conventional solvents).
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What are the different noises you hear little while after switching off the car? Also after keeping the car switched off for a while when you open the driver door there is a noise of fluid being pumped, same happens little while after shutting down the car.
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I have strange rubbing and whumping noises coming from underneath my truck. Yesterday I changed the old e-brake and lines, thought it my be rubbing on the wheel. Today I changed the front and rear axle u-joint and rear pinion seal. The front u-joint was ceased and the pinion seal was leaking. I thought this would cure it but the noise is still there , the noise is more pronounced when I make a turn. Besides that the truck runs perfect. This summer I changed all 4 rotors, calipers and pads and ball joints , shocks and muffler. Tomorrow I will jack the front up and check the front, where the noise would coming from.
2001 F150 4X4 7700 ....
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I've been noticing my GTI has been making some weird noises, especially after only have 380 miles on it. When idling with the clutch engaged, it makes a rattling noise that goes away when depressed. There's also a rather loud sound coming from the timing belt and just underneath the plastic engine cover. I'm hoping it just needs breaking in, but I'd just like some reassurance that it's nothing serious.
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I am having problems with squeaks and other noises from the dash. The dealer sprayed some foam on the dash board (underside of it) to quiet the noises. It didn't work. The repair order says he sprayed the air bag cover. I'm not an expert on air bags but would this effect the function of the bag?
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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 son's 2001 Prius (Gen I) has squeaky noises in the front end. When I had the two front tires replaced yesterday, I asked them to see if they could diagnose the problem and he said he thought it could be the control arm because he had had the same noise in his Toyota Camry and that was what it was.
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05 Santa Fe GLS 2.7L, auto, 2WD, 161K miles. Just bought it a couple weeks ago. Not much info about repair history, other than it appears to be well maintained inside and out.
Engine makes two kinds of noise - rattly top end noise and a low frequency thud-thud-thud.
I have shared some MP3 files on my Google Drive, but the forum blocks links for new users.
Apart from the noises, the engine starts and runs flawlessly, seems to have plenty of power (for a 2.7L, ha), and cruises at freeway speeds no problem. No tailpipe smoke or steam, whether cold or hot. Have searched the forums for this but nothing matches exactly.
I don't drive it much because I work from home, basically just around the corner to the grocery store and back. Haven't pulled the valve or timing covers yet, waiting to hear from all you Hyundai experts out there. Top end noise is one thing, but the thud really has me concerned.
Top end noise sounds like lifters not injectors - but I'm not sure I can really tell the difference, there's a lot of "sewing machine noise" going on. On cold start, it's not very noticeable, but becomes more pronounced as the the engine warms up. At operating temp it settles into a consistent rattle at idle. Seems to diminish slightly with higher RPMs, which also suggests worn/sticky lifters.
Oil looks clean and fresh. Haven't tried the Hyundai oil filter, but IMO this level of noise is well beyond the simple lifter ticking that others in the forums have described and reported cured by using the OEM filter.
I used the "long screwdriver with handle in my ear" trick to listen at various points on the heads and valve covers. At idle, it sounds like 2 or 3 lifters on the front bank that are making most of the noise, but maybe a couple on the rear bank as well, hard to get the screwdriver tip back there. Is there a particular spot where lifters can be heard best, distinct from everything else?
The low frequency thud-thud-thud is most audible when letting the throttle close after opening it up to about 2000 rpm. It can also be strongly felt through the throttle mechanism when operating it by hand. Still audible at higher RPMs, but not nearly as distinct, more of a subdued throbbing. Noise is coming from around the rear bank, about half way down the firewall. I fear it is number 3 rod, but is there anything else that would make this sound? I don't think it's a motor mount because there's no noise when putting it into gear, driving, or shifting. How can I tell for sure whether it's a rod? If it is a rod, can it be replaced without pulling the motor?
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Sounds like I may have a problem that is not all that uncommon i have a 94 honda accord with 100k miles, runs great, handles great
Just last week I noticed a resonant humming / growling sound coming from the engine - it's very "vocal"it only occurs around 2000 rpm, and is more pronounced when decelerating there's no apparent loss of power or fuel efficiency the sound occurs with or without the transmission engaged and seems to be worse after the car has heated up a bit
Cat converter? Intake manifold?
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2006 Prius has a strange intermittent tweeting sound that appears to come from the front drivers side, maybe in the console. Mechanic says it is in the tires. But I just can't go with that. The sound almost is like a cricket...
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I have a 2003 Prius, I had an accident and after it was fixed the check engine light started coming on. It would go off after a couple of days. The first time I took it to Autozone and the codes were P3150 & P3130, but the next day the check engine light went off. A couple of days later the light came back on....went back off....next week it stalled on the highway, but it started back up, now the codes it's reading are P1636 and P3002. It still starts up and will drive, but I'm afraid to drive it.
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I did some maintenance:
1. Changed oil
2. Flushed ATF fluid
3. Cleaned throttle body
4. Cleaned MAF sensor
I did all of these one right after the other and when I rolled out to test drive, the car shuddered and now the engine is making weird noises. I don't want to turn the car on again or drive it.
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My new 2013 prius c engine makes buzzing, whirring, clicking noises, especially when speeding up or slowing down. Why?
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Car that would go clunk after coming to a stop. (don't recall the type of car) It sort of reminds me of what my car will do on occasion. Sometimes after coming to a stop for a few seconds my car's A/C compressor will kick on, kicking up the idle speed of the engine. From time to time I can hear my rear brakes grabbing harder as the car attempts to move forward because of the idle speed increasing. Could be that's what he's hearing also.
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I have a 2013 4 Door Golf MK6 with the following:
DG springs
225 X45 X17"
Hotchkis RSB ( set on the softest setting which is 90% stiffer over the OEM one)
Neuspeed Endlinks
About two weeks ago I started hearing some creaking noises coming from the rear of my car. I thought, I need to put some grease to the RSB bushings, but this didn't work. After a close inspection I notice that the sway bar was rubbing.
The RSB was installed about 3 1/2 months ago and didn't have any issues. What could be causing the problem? I am suspecting the endlinks are going to be culprit. the car is used as a daily driver. what endlinks would you recommend to get?
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O.K., I admit I get obsessive compulsive with my new cars for a few weeks after I buy them. Just got the '08 Limited and am trying to find where a few little noises are coming from. I've eliminated most now, but the 1 thing really bugging me is the seat belts. The rear belt part that you grab and then buckle into the seat latch rattles like crazy over bumps. It's just the piece hitting that plastic grommet in the middle of the belt. So, short of leaving the belts latched in place or (hubbys suggestion) turning the radio up, is there something to prevent them from making this racket? I almost never use the rear belts.
Compared to my 2004 I'm surprised I am bothered by it, but it is so quite it really stands out. That cheap plastic liner in the back also bugs me as the "wings" at the wheel wells rattle. I had a super heavy duty plastic liner and a really nice carpet mat in my 2004 that I really miss. Oh well, I guess they have to cut costs somewhere. Oh, almost had a near heart attack last night when I used my spare key and it got STUCK in the ignition! Took hubby 10 minutes to yank it out. I think it was a faulty key as they gave me 3 keys instead of 2. I think they knew it was bad, cut another and never discarded the bad one. Other than that no complaints so far and hope to stay as trouble free as my last one which never saw the inside of a repair shop in the 4 years I owned it.
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So I just replaced my upper strut bushings and bearings and there's still noises coming from the struts or idk what it is but its coming from up front and when I back up and turn the wheel or when I am driving down my drive way there's little bumps and once i drive over them the car just makes all this noise. Pretty much what else could it be? are my struts blown? or could it be something is loose?
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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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I am experiencing issues with front shocks RS2 Coilovers. I have this knock occurring from both front shocks. If they're set the softest, they're the worst...knocking noises over all small sharp bumps or sharp dips in the road. If I set them to full stiff and you drive it immediately after the ride is stiffer, but smoother, almost no noise at all, only when driving over roads that throw weight from side to side quickly will create the knock, but very light. However after a while of driving it just starts to make noise again as if they're unwinding on there own. When I check their position, they're where I left them. It feels as if the shock pressure bleeds until I perform the same routine and it feels tight again for a short period.
Its starting to annoy me now, car has 6000km on it and 600 km on the coilovers.
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I'm looking to purchase a complete shifter assembly (cables, plastic box, shift lever, ect. Not the parts that bolt to the transmission itself) so I can reverse engineer them without having any down time with my car. I want to make an aluminum box and shifter assembly to eliminate all the plastic components in the stock shifter mechanism. I'm thinking along the lines of a VWMS billet shifter mounted down low in the box so it isn't seen when a shifter boot is used. This will hide the really cool assembly, but I'm after function here.
I'm currently at 23k miles and there are creaking noises coming from my shifter assembly. The shifter mechanism has also lost the crisp feeling it once had when it was new. The dealer has offered to replace it under warranty, but I want to do it once and do it right. The OEM plastic stuff will not cut it.
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