What people keep running into with mechanics
Complaints tagged mechanics, each raised by more than one person. One-off posts are not included.
91 recurring problems · 1627 people · 23 forums we read
Raised more than once
Most people first.
- 18Car won't start or shift gears after dead batteryA dead battery can reset the vehicle's electronic control modules and disrupt the transmission computer, causing the car to fail to start even after a jump or experience severe shifting issues while driving. These computer resets prevent the engine from properly engaging and stop the transmission from switching gears, leaving drivers stranded with electrical components working but the vehicle unable to move.
- 17Why am I paying for broken bolts during a car repair?Repair shops and dealerships often break rusted or seized parts during standard service, yet charge vehicle owners to extract or replace them. This leaves customers footing the bill for damage that wasn't there when they dropped off the car, while shops refuse to absorb the labor required to handle stubborn factory components.
- 16How to know if a furnace repair recommendation is realContractors often push for a complete heating system replacement when faced with corrosion, leaving homeowners unsure if the part can simply be repaired or covered under warranty. Without diagnostics like a combustion analysis or a trusted second opinion, it is impossible to know if a full replacement is actually necessary.
- 15How to stop dealership service upsells you don't needDealership service departments frequently push unauthorized additives like oil fortifiers and unverified maintenance additions during routine visits. These unnecessary recommendations inflate repair bills and force vehicle owners to waste time deciphering which services are actually required by the manufacturer.
- 15How to fix a leaking exhaust pipe with wrap on itExhaust wrap often masks underlying corrosion or structural damage that temporary fixes like patches or adhesives cannot resolve. Dealing with a compromised pipe typically requires cutting away the damaged section and welding or clamping in a replacement component like a flex pipe to achieve a permanent seal.
- 15Car repair shop broke my car and wants more moneyShops sometimes cause new mechanical failures while servicing a vehicle and then demand thousands of dollars extra for computer replacements. This unexpected damage leaves owners stranded without transportation for weeks and forces them to pay triple their original estimate just to get a working car back.
- 14Steering wheel still off center after an alignmentA steering wheel that remains off-center usually means the technician failed to lock the steering wheel in the dead-center position before adjusting the tie rods, or the rear thrust angle is out of alignment. This minor adjustment error forces drivers to constantly hold the wheel at an awkward angle just to travel straight, which creates persistent frustration even if the vehicle otherwise handles adequately.
- 14Why is my truck shaking and popping after replacing wheel hubs?Hearing a pop and feeling the truck shake right after replacing wheel hubs and bearings points to a sudden mechanical failure in the assembly, even when the axle nut is torqued to specification. The presence of metal shavings or "glitter" indicates internal component damage that prevents safe driving and requires immediate inspection.
- 13Which mechanic diagnosis do I trust when they completely disagree?Conflicting repair assessments leave car owners completely unsure of which shop is right or what parts actually need fixing. Without automotive knowledge, people are trapped guessing who to believe and risk paying for unnecessary repairs.
- 13How do you fix a leaking metal brake line?A leaking brake line means you need to replace the damaged metal line section and properly bleed the brake system afterward. Getting air trapped in the master cylinder or failing to clear blockages will prevent fluid from reaching the calipers, stopping you from restoring safe brake pressure.
- 12Did my timing belt slip or did I mess up the install?An engine that idles fine briefly before running rough, dying, or refusing to rev past 2,000 rpm points directly to valve timing misalignment from the recent replacement rather than a slipped belt. This prevents the car from running reliably despite new components, as incorrect timing creates unburned fuel issues, strong petrol smells, and misfires.
- 12How to find a trustworthy mechanic after losing DIY spaceCommercial shops often present a dilemma between inexperienced technicians who make careless mistakes and burnt-out mechanics who skip proper diagnostics. This lack of reliable workmanship makes it difficult to transition away from DIY maintenance without worrying about overtorqued drain plugs or misdiagnosed issues.
- 12Car making weird noises after getting servicedNew rattles, clatters, or pops appearing immediately after a mechanic visit usually stem from loose components or unfinished reassembly during the repair. This unexpected transition leaves drivers questioning if their vehicle is actually safe to drive and worried that the shop made a mistake.
- 12How to fix a stripped screw hole that won't holdStripped screw holes lose their grip when the surrounding material wears out, leaving hinges and faceplates loose or completely detached. Without a reliable fix, people are forced to choose between makeshift patches or tearing out entire walls and doors to replace the damaged mountings.
- 12Car still has electrical problems and high voltage after replacing partsPersistent vehicle electrical faults like high voltage spikes and limp mode often continue even after replacing major components like the alternator, battery, and ELD. This leaves drivers completely stuck after trying everything, unable to reliably diagnose the root cause of the ongoing system failure.
- 11Where to find service manuals and parts diagrams for uncommon carsOfficial service manuals and detailed parts diagrams for imported, older, or manual-transmission vehicles are rarely stocked by standard auto parts stores or dealerships. This leaves owners unable to get visual breakdowns or cross-referenced part numbers, forcing them to piece together rebuilds and repairs without proper documentation.
- 11Why is car maintenance advice so different everywhere?Conflicting advice between the dealership and online sources makes it impossible to know when to service your vehicle. This leaves drivers completely confused about correct maintenance intervals for routine tasks like fluid changes.
- 10Mechanics overtightening wheel lug nuts with impact wrenchesImpact wrenches often over-torque wheel lug nuts far past proper specifications. This makes removing wheels nearly impossible during a flat tire and risks damaging the studs or warping the rotors.
- 10Paid for an oil change but the shop didn't do the workShops sometimes skip changing filters or neglect routine service entirely while still charging vehicle owners. This leaves drivers with low oil pressure, strange engine noises, and check engine lights despite paying for regular maintenance.
- 10How do you remove a stuck wheel bearing and axle without damaging it?Wheel bearings and axles often seize tightly onto equipment frames due to rust and pressure, making them impossible to remove with standard pulling force. Attempting to force them off without the proper technique or specialized puller tools usually results in warped components and stripped hardware.
Comes up alongside
Topics that keep appearing on the same problems — not topics with similar names.