What r/MechanicAdvice keeps coming back to
Complaints raised here by more than one person. One-off posts are not included.
684 recurring problems · 6792 threads read · read since September 2026 · Reddit
Raised more than once here
Most people first.
- 168Vehicle cranks after fuel pump replacement but won't start“I replaced the fuel pump on my 06 jeep liberty 3.7l was able to drive it around for about 2 weeks no problem. I was stopped at a stop sign and when I accelerated it lost all power and went totally limp, as if someone took the key out of the ignition. It cranks but won’t turn over now, I did some troubleshooting and I think it is still fuel related.”
- 151Is it worth fixing an old car when repairs cost more than it's worth?“I don’t really have the money to drop the estimated $500+ (his quote) right now, so I’m curious how long I can put this off (or if I should at all).”
- 147How to explain an intermittent car noise to a mechanic“I have a 2017 Toyota 4Runner that pops when turning and going from Drive to Reverse.”
- 131Is this mechanic repair quote too high?“I just wanted to ask how urgent do you think this is and how soon should I get it done?”
- 126How to fix a leaking water pipe in a tight space“I acknowledge that the rubber is cracked , old truck. What’s the best way to fix?”
- 114Should I pay for appliance repair or fix it myself?“I did oil changes every 3000 mi after it hit 100k (currently at 130) before that it was typically every 4-5k.”
- 95Landlord built a fence around the AC and it broke“It went out "all of a sudden" a couple weeks ago.”
- 94How to figure out what an unfamiliar car engine noise is“recently ive been hearing this noise while idle and while driving. any advice? what could it be?”
- 74Why does my car make a loud rattle when starting the engine?“I have this loud rattle as I turn engine on.”
- 57How do I know if I can DIY a repair or need a pro?“I feel like I could tackle this job myself? Am I missing something? It seems straight forward.”
- 57How to remove a stripped recessed retaining screw“Ive spent hours trying to remove the rear brake bleeder screw on a 2001 Ram 3500.”
- 57Is it a smart idea to buy a new car right now?“Do I take the risk?”
- 54How to identify a random car part that fell off“I have no idea what they're called on rock auto. The naming seems to be different on every site. Anyone know what the name is?”
- 50How to fix a leaky plumbing valve that doesn't fit a new faucet“So um I don't think the PCV valve has ever been serviced. Anything I should know before I mess it up? 98 Camry 322k miles.”
- 47How to handle a mechanic who messed up brake repairs“I’ve had too many friends get caught in their scam during their time of need and without the knowledge to know CB are wolves in sheep clothing.”
- 47How to know which replacement part code to buy“Decided to start doing my own oil changes, but I'm having a tough time tracking down the recommended filter for my 2016 Malibu.”
- 45How to pay for unexpected expensive car repairs when broke“I can’t afford it because I have already got scammed when I bought it.”
- 43How to clear a clogged AC condensate drain line“I want to clean the coils on the AC evaporator in my 2010 Nissan Altima, and I don't know the best way access the evaporator.”
- 43How to find replacement parts for discontinued hardware“Problem is this is a discontinued part. The dealership is refusing to replace it due to the only available parts being a non-OEM part.”
- 38How to find a hidden engine oil leak spraying on components“Was chasing an oil leak onto the CV joint and spraying everywhere which makes it hard.”
What this forum worries about more than the rest
How much more often a topic shows up here than across every forum we read.
automotive troubleshooting8.8×car troubleshooting8.8×transmission8.8×car trouble8.8×