Public Repair Guides
Search the fix, not just the car.
Anonymous visitors can search symptoms, fault-light questions, and how-to jobs, then move straight into step-by-step guidance with DIY cost, mechanic cost, parts, tools, and safety notes.
My car is overheating
How to diagnose and fix an overheating engine
Start with cooling-system basics before replacing parts. Confirm coolant level, fan operation, thermostat behavior, and whether the engine is actually overheating or just reading incorrectly.
Difficulty
Moderate
Time
45 minutes to 4 hours
Shop Cost
$180 to $1,600 depending on the failed cooling component
Tools And Parts
Flashlight, Coolant funnel or spill-free funnel, Basic socket set
Correct coolant or coolant concentrate, Replacement hose, clamp, thermostat, fan assembly, or radiator if testing confirms failure
Stop Here If
Temperature spikes into the red again within minutes of refilling or bleeding the system
How do I fix a check engine light
How to diagnose a check engine light before replacing parts
Treat the light as a symptom, not a diagnosis. Pull the code first, note whether the light is flashing or solid, and confirm the root cause before buying sensors or ignition parts.
Difficulty
Easy
Time
10 minutes to 2 hours
Shop Cost
$110 to $420 for scan, diagnosis, and common first-round repairs
Tools And Parts
Basic scan tool, Flashlight, Basic hand tools
Code-specific parts only after testing, such as a fuel cap, spark plugs, coil, sensor, or hose, Replacement connectors or wiring supplies if the fault traces to damaged circuits
Stop Here If
The light flashes under load or the engine is shaking, bucking, or stalling
Check engine light code P0300
P0300 random misfire: step-by-step diagnosis before parts swapping
A P0300 code means the engine is misfiring across multiple cylinders or the ECU cannot isolate one cylinder yet. Start with ignition basics, air leaks, and fuel delivery before buying coils or injectors.
Difficulty
Moderate
Time
30 minutes to 3 hours
Shop Cost
$180 to $950 depending on diagnosis time and which component fails testing
Tools And Parts
OBD-II scan tool with live data if possible, Basic socket set, Spark-plug socket
Correct spark plugs and, if needed, ignition coils or boots, Vacuum hose, intake boot, or PCV parts if a leak is found
Stop Here If
The engine is actively flashing the MIL, backfiring, or losing power badly on the road
Car shakes at 45 mph
Car shakes at 45 mph: how to diagnose steering wobble
Steering wobble at speed usually comes from tire, wheel, suspension, or steering looseness stacking together. Separate tire and wheel issues from front-end play before replacing parts.
Difficulty
Advanced
Time
1 to 5 hours
Shop Cost
$220 to $1,800 including diagnosis, alignment, and front-end part replacement
Tools And Parts
Torque wrench, Jack and jack stands, Pry bar
Wheel weights, tire, or wheel if imbalance or damage is found, Track-bar hardware or bushings if movement is present
Stop Here If
The wobble is violent enough that you cannot safely road-test after the first inspection
How to replace brake pads
How to replace brake pads safely
Brake pad replacement is a good DIY job when the hardware is clean and the rotors are still serviceable. Work one corner at a time, inspect rotor condition, and torque everything correctly.
Difficulty
Moderate
Time
1 to 3 hours
Shop Cost
$220 to $650 per axle depending on rotor condition and labor rate
Tools And Parts
Jack and jack stands, Lug wrench, Socket set
Brake pads matched to the exact year, trim, and axle, New hardware kit or shims
Stop Here If
The caliper piston will not retract, the slide pins are seized, or the brake hose is damaged
What to do if my car suddenly turns off
What to do if your car suddenly turns off
Treat a sudden shut-off as a stall diagnosis, not one guessed part. Confirm whether the engine dies only at idle, under load, or while cruising, then split fuel, spark, air, and power-distribution faults before ordering components.
Difficulty
Moderate
Time
30 minutes to 4 hours
Shop Cost
$160 to $1,050 depending on diagnosis time and the failed component
Tools And Parts
Scan tool, Multimeter, Battery tester
Only the failed component confirmed by testing, such as a sensor, relay, wiring repair, battery cable, or fuel-delivery part, Replacement terminals or ground straps if power-distribution faults are found
Stop Here If
The engine shuts off repeatedly at highway speed or causes a loss of steering or brake assist
Why won’t my car start
Car will not start: fast no-start diagnosis
Separate no-crank from cranks-but-won't-start first. That one split prevents a lot of wasted time and wrong parts.
Difficulty
Moderate
Time
20 minutes to 3 hours
Shop Cost
$130 to $900 depending on battery, starter, fuel, or electrical diagnosis
Tools And Parts
Multimeter, Battery tester or jumper pack, Basic socket set
Battery, terminal ends, starter, relay, fuse, or fuel-delivery part only after testing, Ground strap or wiring repair supplies if voltage-drop checks fail
Stop Here If
You have no-crank with hot cables, heavy voltage drop, or repeated fuse failures