Car owners face unexpected mechanical issues requiring repairs
12 posts in the last 30 days, all from r/MechanicAdvice.
“Past few days, little stutter 2-3 seconds when start them goes, this is intermittent. Could it be the beging of a Glow plugs Issue? Shall I just change the 6 of them?”
“Need some help. My Nissan X-Trail T32 (petrol) has some issues which I could not rectify. The problem is intermittent, sometimes during a cold start, the rpm suddenly drops, then jerks, and the engine stalls. Then start again, the engine starts normally. Sometimes, during a stop…”
“Hi everyone, I’m hoping someone can help me diagnose a problem with my 2017 Nissan X-Trail T32 2.0 (MR20DD engine) . The car has been experiencing intermittent engine stalling, unstable idle and RPM fluctuations , especially during cold starts. At times, the engine starts…”
Multiple car owners are experiencing frustrating and recurring mechanical problems, including faulty glow plugs, loss of acceleration, random vibrations, and fuel leaks. They seek advice and second opinions on diagnosing and fixing these issues.
SOURCES (25)
“Past few days, little stutter 2-3 seconds when start them goes, this is intermittent. Could it be the beging of a Glow plugs Issue? Shall I just change the 6 of them? submitted by /u/Ordinary_Profile279 [link] [comments]”
“'23 Rav4 XLE 2.5L 120k miles. miss fire cylinder 2 Yes, i have a lot of miles on my 3 year old car. I worl outside of my city its a 1 hour drive one way. 1 week ago, I noticed the vehicle took a bit longer to start than usual. And then it happened again the next day. A few days later, i noticed it was idling a little rough. Took it to the auto part store for a scan and got P0302 (I believe, im not looking at the sheet they printed for me right now). The suggested repair was a coil pack repla”
“I drive a 2019 Nissan 370z sport VQ37HR and ive been driving fine until a few days ago. When I clutch in & blip the gas, it drops in RPMs before it actually does what its supposed to do—-blip up.. When the clutch is untouched and I blip throttle, its fine and responsive. Its just when the clutch is in and the gas goes, it basically gets quiet and delays. It affects my driving heavily when trying to move from a stop and preserving my clutch submitted by /u/Clear-Park-2021 [link] &”
“Hey everyone, I need some technical validation regarding a catastrophic HVAC loop failure on a 2021 Kia Sonet Petrol (23,000 km). The authorized workshop has diagnosed AC "Black Death" (mechanical compressor disintegration resulting in thick, metallic black sludge throughout the loop). The vehicle's recent history raises significant diagnostic flags, and I want to verify if the dealer's proposed repair method is technically sound or a shortcut that will cause a rapid recurrence”
“Need some help. My Nissan X-Trail T32 (petrol) has some issues which I could not rectify. The problem is intermittent, sometimes during a cold start, the rpm suddenly drops, then jerks, and the engine stalls. Then start again, the engine starts normally. Sometimes, during a stop at the traffic light, the engine suddenly stalls. No check engine appeared. Already replaced, all original ignition coils and new spark plugs. Already cleaned the throttle, serviced the MAF sensor. After 2 to 3 months, t”
“Hi everyone, I’m hoping someone can help me diagnose a problem with my 2017 Nissan X-Trail T32 2.0 (MR20DD engine) . The car has been experiencing intermittent engine stalling, unstable idle and RPM fluctuations , especially during cold starts. At times, the engine starts normally and appears to run perfectly, but the problem can return unexpectedly. I had the car checked using a diagnostic scanner and monitored the live data. One of the main things we noticed was the fuel pressure (MPa) reading”
“I have a Volkswagen Jetta 1.2 TSI from 2014 (105CV) and have done 115000km. For the past 2 months I've been having this problem where the car would randomly lose all power when driving and won't start up again. The car will start up after some hours or days like nothing happened. I've taken it two times to Volkswagen workshop and they haven't identified the problem. The first time it happened I thought it was the battery and I replaced it. The problem is persistent. I am desperat”
“The line is the negative terminal on my battery. Is that affecting the power of anything in the car submitted by /u/Foreign_Tea757 [link] [comments]”
“MG Zs 1.0 Turbo 2021 Numerous faults came on while driving and wont clear - any ideas of where to look? I was thinking abs sensor but looking for other ideas? Thanks submitted by /u/Emergency_Driver3687 [link] [comments]”
“So I've a seat Toledo 1.6 TDI 2013. Coil symbol flashing then a steady engine light on and cars stuck in limp mode is it safe to drive to my garage 4 mins away at normal speed but car is stuck in limp mode. Don't want to do any engine damage submitted by /u/Ol_Brown_Coins [link] [comments]”
“Hi! I'd like to talk to you about my problem with my car, it is blowing my head off and I don't know what to do about it.A few four days or so ago it started behaving up, it would stall for no reason and tick all the witnesses, I changed the battery and it worked fairly normally for a day or so, then in the evening it just stopped again, but the odd thing was that it would start up but it would not tick any revs. A day or so after that it just happened to me that it had gone to "kil”
“Hi new driver here. I bought this car (2026 TATA Sierra Manual transmission) few months back and sometimes I am having this problem when I'm in traffic or very slow speed or reversing and I am controlling the speed by pressing the break mid way and then I try to press the break more to stop or slow further down, the break pedal just feel stiff and won't press further. I had to remove the foot completely and press the pedal again to stop the car. Is this normal for a car break mechanism o”
“With some recent storms the other day my car found itself suddenly driving through flood water to an extent. I do not know how high it was (i know it wasn't over the hood and i dont think it would have covered the radiator but it is possible) and I didnt stay in the water and drive through it i got out of it as fast as I could. The car drove fine the rest of the night no shifting issues, braking issues, etc.. 5 days later the car will not move. It will turn on and run. The dash lights and he”
“2018 1.9 T28 VW Transporter with 61k miles. Solid engine warning light appeared on Wednesday, garage plugged in and diagnosed as faulty glow plug in cylinder 3. Recommended repair New set of glow plugs + pressure switch. In garage on Friday for repair, called at 1700hrs to advise ready to pick up. Left till Saturday morning to collect due to child care. Got phone call Saturday morning to say in fact the mechanic had not put the engine back to other and would be 1-2hr delay. Phoned 2hrs later to”
“Hi everyone, I am facing a highly frustrating and dangerous issue with my 2019 Tata Tiago XZ (1.2L Petrol), and I am completely stressed out. The car randomly loses all throttle response while driving—especially on high-speed highways. The accelerator pedal goes completely dead, the RPM needle freezes near idle (around 1,000 RPM), it refuses to rev ("stop taking the race"), and the Check Engine Light pops up on the dashboard. It forces the car into a strict Limp Home Mode . The worst p”
“Can anyone help ? My 2015 dodge Durango started to get a very violent vibration at randomly. I’ve noticed that when the car is parked for a bit can I get on it and start driving, the vibration starts around 40 mph. It is a very strong vibration that can be felt through the whole car not just front end but feels a bit more harsh on front end. I’m planning on bringing it to get it diagnosed, but wanted to see some options on what might this be. Once it starts vibrating, it’ll keep doing it for a g”
“I want to install an additional coolant temperature sensor. I have an aluminum hose adapter and the 1-pin sensor (DELPHI TS10271), but now I've realised that I don't have the plug for it. What is the correct way to connect the wire to the sensor's pin? The adapter has a connector for the ground, so no issue with this. But the signal from the sensor itself, how to wire it correctly? Strangely, I couldn't find much info on the internet about this... AI tells me that just winding up”
“Hello all, I drive a 2013 C250. For the past few days, I’ve noticed a gas smell coming from the back left side of my car. This is while I’m standing outside of it. I don’t notice a smell inside, maybe subtly, but not as strong as it is outside. Opened the engine bay & didn’t notice any smell. Checked the gas cap & it’s tightened. No CEL. Did a scan anyways & no codes. The last thing I did with the car was get gas, drove probably 10-15 miles around town and had it parked in my drivewa”
“Further issues can occur during repairs, yes. As for what happened in your specific vehicle it’s hard to say. Could they have forgotten to plug something in? Cut a wire somehow during repairs and not noticed it? Drop something down in the cylinder while they had the glow plug out? Part of the glow plug fall down into the cylinder and they didn’t notice, started it, and the glow plug shrapnel caused damage? Or is it genuinely just poor timing? I would need the vehicle in front of me to give you a”
“That’s a relief thanks. To be fair to them, they have kept me in the loop all the way. Your advice is greatly appreciated so that I’m not communicating blind.”
“doesn't smell like you're being fiddled, more like the classic cascade where one job uncovers another. the glow plug job on these involves pulling injectors sometimes, and if a seal or seating doesn't go back perfect you get exactly this, misfire, low pressure, chasing your tail. the fact they called you before you showed up says they're not hiding anything. what i'd want from them is a clear list of what they touched, in what order, and which codes are showing now vs before.”