What people keep running into with transmission
Complaints tagged transmission, each raised by more than one person. One-off posts are not included.
44 recurring problems · 711 people · 22 forums we read
Raised more than once
Most people first.
- 170Vehicle cranks after fuel pump replacement but won't startA replacement fuel pump can deliver pressure while flooding the engine with excess gas, preventing it from catching. This leaves the vehicle cranking normally but refusing to start or run.
- 152Is it worth fixing an old car when repairs cost more than it's worth?Putting thousands of dollars into a high-mileage vehicle whose market value is nearly the same leaves owners torn over whether the investment makes financial sense. It forces them to weigh whether upcoming major fixes are truly mandatory right now or if they are just being pushed into expensive preemptive work they cannot easily afford.
- 57How do I know if I can DIY a repair or need a pro?Deciding whether to tackle home repairs yourself or pay a contractor comes down to guessing if the job is simple enough to figure out or risky enough to require an expert. This uncertainty often leads to second-guessing the complexity of the damage and worrying about making mistakes that make things worse.
- 27Is it safe to keep driving with needle bearings in the transmission pan?Finding needle bearings on the transmission magnet of a high-mileage vehicle indicates internal component failure that threatens reliable operation. Owners face the difficult choice of whether to pay for a major repair or risk driving the car until it completely breaks down.
- 26Intermittent car hesitation with no trouble codesElectrical or charging system anomalies—such as a weak alternator or hidden voltage drops—can disrupt powertrain sensors without setting a diagnostic trouble code. This leaves owners replacing mechanical components in circles while the underlying power supply fault continues to trigger random engine or transmission hesitation under load.
- 24Why does my car lose power when I step on the gas?The engine accelerates fine under light input but bogs down, bounces revs, or stops gaining speed entirely when the pedal is floored. This prevents the vehicle from speeding up past a certain threshold or responding when full power is demanded to pass or merge.
- 19Metal flakes in engine oil after buying a used carFinding metal bits or debris in drained engine oil indicates internal engine wear or component failure. This discovery often signals a hidden mechanical problem that requires immediate investigation before the vehicle can be safely driven.
- 19Why is my car making a clanging noise that speeds up?A clanging front-end noise that gets louder with speed and causes road feel in the wheel and pedal leaves drivers wondering if they are dealing with a failing wheel bearing. Even after checking the tires and replacing the front driveshafts, the persistent noise makes it difficult to know whether the issue is a bad wheel bearing or just a minor quality of life problem.
- 16Should I change my transmission fluid at 60k miles?Vehicle manuals often only recommend inspecting transmission fluid at 60k miles, leaving drivers confused about whether to wait until 100k or service it early. This leaves car owners torn between performing a risky full flush or opting for a safer drain and fill to protect their transmission.
- 15How to tell if a worn timing belt actually needs replacingMechanics often recommend replacing worn timing belts immediately, but vehicle owners frequently debate whether the belt can safely run past its mileage limit. Delaying this $1,500 repair risks catastrophic engine failure if the belt snaps, yet changing it early may mean throwing away thousands of miles of remaining life.
- 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.
- 11Is it safe to change transmission fluid on a high mileage car?Changing transmission fluid on a high-mileage vehicle with an unknown history feels like a gamble that could cause a currently functional car to fail. Conflicting advice from mechanics makes drivers nervous to attempt the service, risking total loss of transportation if the transmission slips or fails afterward.
- 11Is chunky oil buildup a dealbreaker on a used car?Visible oil buildup and sludge signal potential gasket blowouts and neglected maintenance that can quickly lead to major engine failure. Buyers face the risk of sinking money into a high-mileage vehicle that may already have hidden internal damage, making it difficult to determine a fair price.
- 11How to tell if a manual car clutch actually needs replacingClutches with high mileage or recent driver wear can be difficult to evaluate visually, leading to uncertainty over whether they are truly worn out. Replacing a clutch is expensive, so second-guessing its condition risks either paying for unnecessary labor or reinstalling a failing part that slips and fails to hold torque.
- 10How to diagnose transmission clunking and slipping before replacing itClunking, grinding, or whining noises when shifting into gear—alongside delayed engagement—often indicate underlying transmission trouble rather than immediate failure. Without proper diagnostic tests to isolate the root cause, owners are left guessing whether the transmission actually needs a full replacement or if a smaller component is at fault.
- 10Rebuild original vintage part or buy cheap reproduction?Deciding whether to buy a rebuild kit or a cheap replacement part comes down to balancing the effort of restoration against the reliability of a new component. This choice often leaves mechanics stuck fighting stubborn old pieces or gambling on aftermarket quality just to get a machine running.
- 9Why does my car jerk and whine when accelerating around a turn?Car jerking and whining exclusively during turns while pressing the gas pedal usually points to a drivetrain or differential issue, since the problem disappears when driving in a straight line. This sudden kicking sensation makes driving unpredictable and prevents normal, smooth acceleration from a stop or around corners.
- 8Why is my car suspension popping after replacing struts and springs?Suspension popping noises after installing new parts like struts and springs are often caused by improper installation, components not being torqued correctly under load, or binding parts. This leaves drivers dealing with intermittent knocking or popping sounds when turning or driving at different speeds.
- 7Why does my car lurch and shake when I accelerate at low RPMs?Heavy acceleration at low RPMs causes the vehicle to violently shake, lurch, and make clunking noises, while smaller inputs can trigger rough, punchy downshifts. This makes driving unresponsive and jarring, preventing smooth acceleration from low speeds.
- 7Why does my truck stall and die when shifting into reverse?Vehicles can stall immediately upon shifting into reverse or drive, accompanied by severe jerking and high idling speeds. This persistent issue can happen even with a brand new transmission installed, preventing the vehicle from operating normally when changing gears.
Comes up alongside
Topics that keep appearing on the same problems — not topics with similar names.