Intermittent car hesitation with no trouble codes

“I’m going to try to go to a shop within the next few days, but I’m kind of worried about getting upcharged for random things I don’t actually need.”source ↗

“last week I started my car and it instantly started revving by itself.”source ↗

“Car will run fine then acts like its limp mode and wont let u press the gas”source ↗

“yesterday on my drive to work it stopped letting me give it gas once again!”source ↗

“The screen glitches red back and forth a few times and the speedometer bounces.”source ↗

“I’ve literally had nothing but issues with this vehicle since I’ve gotten it.”source ↗

“Been experiencing loss of power at cruising speeds. Randomly when driving 30-50 mph, car feels like the throttle has been disconnected for anywhere from 5-10 seconds before power is restored.”source ↗

“At this point, I feel dumb because I’ve spent money trying to find the root cause and haven’t really gotten anywhere. It’s been taking up a lot of my headspace and I wanted to see if the internet had any suggestions.”source ↗

“Could this be the cause of alternator not charging properly my first time testing and I been having charging issues and slow crank?”source ↗

“did just replace battery recently and still charging issues”source ↗

“My car is also jerking—it’s a Porsche Cayenne 958 GTS 2012 M48.02.”source ↗

“Also, for some reason, Maxis won’t adapt the kickdown.”source ↗

“Fuel consumption has increased, even though the computer says it’s 20 liters per 100 km.”source ↗

“okay thanks for letting me know”source ↗

“It’s been happening for awhile. I changed the battery and checked grounds that I could get to but nothing has fixed it. 2006 GMC Sierra 1500 SLE. Advice or direction?”source ↗

“They say they will provide a loaner if it's a Kia problem. If they can't a problem.... no loaner!”source ↗

“Grandmas truck had a p1131 code pop up the other day and my scan tool showed possible causes.”source ↗

“I got home and she said the light turned off, scanned the truck, no more codes.”source ↗

“In my head that means intermitent vaccum leak or a bad wire to the O2 sensor. Whats everyone elses thoughts on this?”source ↗

“I've had the fault memory read out several times now, but no codes or errors were found.”source ↗

“After that, I had the charge air hoses replaced because one of them was leaking and covered in oil. Unfortunately, this didn't change anything about the problem.”source ↗

“I was driving home when all of a sudden the engine started spinning fast as hell, so I switched to neutral and back to drive and that fixed the rpm but as I’m driving the speedometer and rpm started going up and down.”source ↗

“The dash went out, the mileage and trip A went out, the the speedometer, rpm and heat gauge went to 0”source ↗

“So after driving 30-45 min the car starts losing power/acceleration, not a full stall just gradually can't pull.”source ↗

“At this point I've ruled out exhaust and crank sensor and I'm out of ideas and pissed.”source ↗

“If I feather the gas pedal, I can very slowly speed up instead of having it choke out between 2500-3000rpm.”source ↗

“A week ago the car wouldn’t start after about 12 seconds of cranking, gave up came back and started but had those lights on.”source ↗

“That intermittent crank sensor is such a pain to pin down, had one on an older civic that would only act up after a heat soak then work fine for days”source ↗

“About 5 minutes later, while I was on the highway, the car suddenly lost almost all power and would not rev past 2,000 RPM.”source ↗

“should I call some other service and advise them to do wiggle test or something as I don’t know I should keep going to these guys that are advising me to go home and they don’t know what’s up”source ↗

“I’m not that experienced I’m wondering should I go and suggest them to fix it and try to look for error or drive it now and only wait and go if it happens again”source ↗

“Recently I've had my check engine light come on then turn off within a day or so a few times, so I bought a diagnostic code reader to see what was going on.”source ↗

“Also, a few times now I've had the battery warning light turn on WHILE DRIVING, which has freaked me out, but after sitting turned off for a few hours the car has run fine without any battery warnings the next time I have run it.”source ↗

“My left headlight is also sometimes really dim- it looks almost like the headlight is dead, but if you look close it is on, just not bright.”source ↗

“I can't afford to bring my car into a shop right now, so any help for what I can try on my own would be greatly appreciated!”source ↗

“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.”source ↗

“I am desperate because since it is an intermittent problem it is difficult for a mechanic to notice since car will boot up again after having it stopped in the car workshop for multiple days.”source ↗

“That alternator is definitely suspect with the electrical gremlins and sudden restarts, especially at 200k+ miles”source ↗

“Get the battery and charging system tested somewhere else though, AutoZone's handheld testers miss intermittent issues all the time.”source ↗

“When the problem happens, turning the key causes a sound like the car \*considered\* cranking, but something failed. I wouldn't quite describe it as a "click", it's like a light thud.”source ↗

“The frustrating part: each time I’ve had it towed to a mechanic, both before and after my neutral safety switch replacement, it starts normally after being unloaded from the tow truck.”source ↗

“The shop hasn’t been able to observe the failure. It’s now back home and refusing to start again.”source ↗

“I’m trying to get a proper diagnosis rather than keep replacing parts.”source ↗

“For the last week my car has been doing this odd thing where it will start fine 3 times in a row but the 4th or 5th time the car is completely dead.”source ↗

“Won’t crank at all. I’ve been jumping it with a portable jumper and then it works normally again until the 4-5th start.”source ↗

“I took it to o’reillys and they said the battery and alternator was fine other than their machine saying the battery was a little low.”source ↗

“I have I have a 2025 Kia Sorento that the headlights have failed on three occasions while driving at night I live in the country so it's dark to Kia dealerships have told me they cannot find anything wrong with the car neither one of them knew about the recall until I got there what can I do”source ↗

“I was running it down the highway and it died on me and I got it run for about 2 miles and it ran very good transmission engine and everything then it died again going int my driveway”source ↗

“cant tell if this just means something happened in the past and wasn’t cleared or a current issue?”source ↗

“car runs like dog shit most days, stutters off a stop, randomly doesn’t like going up hills until I pump the gas and then it catches up all at once.”source ↗

“I have a 2010 Mazda 3 2.0 automatic transmission I was getting a AT light and engine light on and off I unplugged my battery and my PCM for a little bit and then re-plugged it and then when I started the car it was in limb mod and dash was tweaking out I have a video.”source ↗

“Previously, I hooked up the car to an auto scanner and scanned it and I got a code saying communication with PCM failed.”source ↗

“And then also on my dash it would say that the car is not revving zero RPMs, but the car is on.”source ↗

“It's having an electrical issue on the 5V Circuit causing Limp Mode, click no start. The issue is intermittent. Happens for 2 weeks, drives for 2 weeks, happens again.”source ↗

“Had it at two different shops that have wasted my time. I'm not electrical smart when it comes to vehicles but I can deal with anything physically like a starter or complete wheel change”source ↗

“Been having this issue for quite some time now and am at my wit's end with how to fix it. I have gone over or rebuilt everything and still don't know what it's doing.”source ↗

“There is no codes and nothing out of the ordinary on my scanner.”source ↗

“Since I’ve pretty much had this car (2019 Hyundai i10 Petrol 1L manual with around 95k on the miles) I’ve had problems.”source ↗

“My car keeps revving while stationary or while I’m driving in third gear for example it was rev from 3000 revvs to 4000 without me even touching the accelerator.”source ↗

“We are all at our wits end this is my first car and I can’t afford to not have a car right now and I also can’t afford to keep fixing this when I don’t know what is wrong.”source ↗