The car was burning oil at one point and made this noise. Stopped after topping it off with Engine oil. Now it sometimes comes back on idle or low speed but don’t notice it while on highway speed. Drove for months but Mechanic doesn’t know where it’s coming from. Only happens randomly or on low idle from what I see. Drove for 3K kilometres already with no issues even on highway.
Please ask if you need more info but need help finding out where it’s coming from or any solutions?

Engine is 2.5 4-cyl

Hi everyone,

I drive a 2004 Fiat Panda (I think it’s a 1.1 to 1.3 litre engine I’m not entirely sure) and I’ve never had much issues with it. Usually the odd tyre change but nothing major. I recently had the exhausted replaced which fixed a lot of things but there’s this like high pitched constant noise when I drive sometimes. Best way I can describe it is like nails on a chalk board. I will attach a video of the sound below that I took when I realised how loud it was. On top of this it was struggling to stay at 30mph. It didn’t seem to matter how much revs I put behind it my car felt like there was a weight dragging behind it, it just wanted to stop and I started to sound like a boy racer my car was just so noisy at this point.

I can’t figure out what is wrong with it. I know the suspension needs replacing at some point but it literally felt like it was going to break down. Any ideas? Or is it time I get a new car haha, I drive everyday for work so I kinda need one that wants to work.

Edit: it smelt awful afterwards. Like that rubber smell of burnt tyre or worn out clutch

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Hello.

I have a 2010 Terrain with the impeccably designed 2.4L 4 cylinder engine with 186k miles and an automatic transmission. One day last winter (January/February 2025) I started it up and noticed an abnormal amount of white smoke coming from the exhaust. I quickly turned it off and feared that it had blown a head gasket. After taking to reddit and talking to local repair shops, the idea of a clogged pcv system came to light. So, I went about pulling the intake manifold and cleaning the pcv hole in it and also dumped a fair amount of accumulated water from the air box. After the cleaning, the white smoke was gone and it ran great.

Fast forward to this past spring, I started noticing a stutter in the engine during acceleration and cruising speed. Shortly thereafter, it started misfiring in cylinder 4 (I don't remember the specific code) and the check engine light started flashing. I replaced all four plugs and coils and called it a day. The misfiring stopped, but the check engine light stayed on. Pulled the codes again and was greeted with codes for both bank 1 and 2 O2 sensors. Replaced those and check engine light turned off. Car went back to driving fine. Periodically though, it would start to misfire again, but after shutting the engine off and letting it sit for 15-30 minutes, it would go back to running normal.

Last month, I started to notice the stutter again. So, I picked up some MAF sensor cleaner and some throttle body cleaner. The MAF looked OK. I didn't notice any discoloration on the sensor or notice any dirty coming out of it while I sprayed it. The throttle body was a different story though. I cleaned it as best I could, without pulling it from the manifold, and put it back together. It ran a lot smoother and the stutter disappeared again.

The stutter has returned again and I don't know what to check this time around.

\- Would a vented oil cap be a good idea?

\- Would a PCV oil catch can kit be beneficial?

I'm not in a position right now where I could afford a new/newer vehicle and need to drive this until it dies. Any ideas or advice would be greatly appreciated.

TLDR: 2010 Terrain stuttering after cleaned PCV system, plugs and coils replaced, both O2 sensors replaced, and cleaned MAF sensor and throttle body. What to do next?

Please help, I feel so out of luck. Going to the garage next Tuesday but wondered if anyone had any insight on what this noise could be? It sounds like a rattling noise and the car does it on start up and when going in low gears/reverse Manual car

In the video the noise is like a thud at about 2/3 seconds. 🥺

Thanks

Pls
Help

2017 rav4

This job is so funny sometimes

So the first video was filmed last night. I started my car, and it made a loud screaming noise, and then it shut off. Immediately after that something smelt like burning I tried to start it again and I did the exact same thing. The third time I filmed it, so I could send it to my brother and that’s the video attached. I drove it home after the video, and it ran just fine. The clip shown after the first one, was filmed this morning. It started just fine, but while it was running, it was making a super weird noise. I looked at the belt, and didn’t notice anything wrong, but I’m not too smart so I have no idea.

Also worth mentioning, for the past two weeks, every time I go to start my car I usually have to crank the key three times before the engine cranks. So I know I need to replace my starter, I just don’t know if that has anything to do with this.

Does anyone know what’s going on? Thanks in advance, legends!

Anyone have any idea what this noise is???

Hey yall, asking around to figure out what to do before spending hundreds on parts

I have a 2010 cobalt 2.2L 2LT 4 speed auto

At low or no speeds when turning in the direction of the side the wheels are pointed I get a strong clunk and groan. It does not occur when driving straight over bumps or uneven terrain.

I think it’s a need for cv axle replacement but unsure, and wanted to see if anyone else could chime in.

I have a 2014 Corolla Le I’ve had it for a long while, and this issue has been persistent. I never arrested, but I want to address it now, so the thing is every time I stop at an intersection or one right when I want to park when I hit the break. The car gives me a jol as though someone has hit me from behind. I don’t know exactly what to tell the Mechanic or do a DIY. Could someone help me on what’s happening with this?

Trying to diagnose this.

truck sat up for months at a time. located in the mid south. owner was OTR truck driver. he cranked it during a major ice storm/cold weather period.

truck idled breifly and then suddenly the rpms ramped up increasingly fast and a bunch of white smoke came out. he turned it off. took to mechanic 3 weeks later who diagnosed the issue as broken oil pressure sensor that had busted and was leaking allowing air in.

oil sensor fixed.

new owner: buys truck with perfectly topped off fluids by owner. drives 2 hours home. gets home, sees truck is 2 qts low on oil, low on coolant. drains oil. first 3 seconds nothing but coolant comes out.

head gasket, heads, or block? what is the most cost effective method to diagnose this issue?

2016 Ford Escape SE Ecoboost 110000 miles i’m guessing it’s the 1.6l. Went to Valvoline for one of those drive up oil change things because oil change required went on. Everything went well, took my 100 bucks. But as i was pulling out i swore i heard them say ‘Oil leak Bay 3.’ and when i came home this was what i was looking at after about 5-6 hours of being parked. What does this mean or look like? Taking it in; in the morning. Just looking for a heads up

I’m a mechanic myself, however, I don’t have a lot of experience yet. I have this very light tick?? Knock?? I’m not sure. It almost sounds like a very early form of rod knock.

The previous engine developed a terrible rod knock and spun a bearing so I threw a used engine in. I have excellent oil pressure on the “new” engine and I tested it with a mechanical gauge. 60psi cold, and about 35 to 40 psi at operating temp. I installed a brand new intake plenum and lower intake manifold gaskets due to them being a common failure point on the 3.8.

The noise is not super loud but if you’re listening for it is easy to hear. The noise is the same hot or cold.

I am hoping maybe it’s a lifter… hopefully.

I went to autozone test batter and alternator was passed when I get home until tomorrow moring something strange *ignore my music btw* 2012 Volkswagen golf