Diagnostics
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Battery
- AGM verus Gel battery: Learn the differences
- Ford F150 Dead battery in morning
- How Long Do Car Batteries Last? Find Out Here
- How to Charge a car battery using a battery charger
- How to Safely Test an Alternator with a Digital Multimeter
- How to test an alternator the safe way
- Starter clicks once but won’t crank the engine — The Most Common Causes
- The 6 most common symptoms of a dead car battery
- The safe way to test an alternator
- Top Car Battery Brands: A Comprehensive Guide
By Symptom
- ABS light on minivan
- Bad idle air control valve
- Blue smoke from the exhaust — what does it mean?
- Car smells like mildew from the AC: How to clean your car’s AC
- Car struggles to start — The most common causes
- Car won’t start after filling with gas
- Car Won’t Start With a Jump: The Biggest Mistake DIYers Make
- Car Won’t Start: No sound when turning the key
- Car wont start but it has a good battery
- Chevrolet Cobalt No Start
- Chevy Silverado won’t start
- Common Causes of Engine Overheating and How to Fix Them
- Dash lights flash rapidly but car won’t start
- Diagnose a serpentine belt tensioner
- Dodge Ram AC blows cold then warm: Diagnose and fix
- Dome light stays on
- Engine Carbon Deposits: How to Safely Clean Your Engine
- Engine cranks but won’t fire up
- Engine cranks but won’t fire up in cold
- Engine ticking noise — Most common causes
- erratic gauges
- Find and fix squeaks chirps and rattle noises in your car
- Focus no start
- Ford starter wiring diagram
- Fuel gauge isn’t working or reading wrong amount
- Fuel pump whine on GM diesel engines — Bulletin 18-NA-10
- GM starter wiring diagram
- Grinding noise while driving: The most common causes
- How to charge a car battery after a jump start
- How to Diagnose and Fix Engine Misfire Code
- How to diagnose serpentine belt noise
- Hyundai Accent No Start
- Jeep no start
- No crank no start – Chrysler product
- No crank, no start
- No lights, power windows, heat, or AC
- No start after filling with gas
- OBDII Scan tool Modes
- Oil pressure light is on: What it means and how to fix it
- Passlock fixes
- Rapid clicking noise when trying to start engine
- Reversed Jumper Cables and Car Won’t Start — What to Check
- Rough idle when warm
- Rough idle, high idle
- Security light on in GM vehicles — What it means
- Starter clicks once but won’t crank the engine — The Most Common Causes
- Subaru won’t start
- Test a Honda Blower Motor
- The most common engine misfire causes
- Throttle position sensor TPS
- Top 10 rough idle causes
- Trac off light on
- Troubleshooting Guide: Car Won’t Start in Cold Weather
- Volkswagen GTI Misfire
- What causes car stalling?
- What to Do When Your Car Won’t Start: Troubleshooting Guide
- When to do when your car engine overheats
- Why a heater fan motor keeps running after the car is shut off
- Why Car Won’t Start With a Jump — Most common causes
- Why WD-40 should never be used to quiet fan belt noise
- Why your car won’t start after filling with gas
- Why your car won’t start after pumping gas
- Your Passenger Side Carpet is Wet: The most common causes
Air Conditioning, Heater, Blower Motor
- Common Causes of Engine Overheating and How to Fix Them
- Dodge Ram AC blows cold then warm: Diagnose and fix
- Why a heater fan motor keeps running after the car is shut off
- Your Passenger Side Carpet is Wet: The most common causes
Belt Noise
- Diagnose a serpentine belt tensioner
- How to diagnose serpentine belt noise
- Why WD-40 should never be used to quiet fan belt noise
Blue smoke from the exhaust
Brakes
Car won't start
- Engine cranks but won’t fire up
- Engine cranks but won’t fire up in cold
- No start after filling with gas
- Rapid clicking noise when trying to start engine
- Reversed Jumper Cables and Car Won’t Start — What to Check
- Starter clicks once but won’t crank the engine — The Most Common Causes
- Troubleshooting Guide: Car Won’t Start in Cold Weather
- What to Do When Your Car Won’t Start: Troubleshooting Guide
- Why Car Won’t Start With a Jump — Most common causes
Electrical symptoms
- Fuel gauge isn’t working or reading wrong amount
- No lights, power windows, heat, or AC
- Test a Honda Blower Motor
Misfire
- Engine Carbon Deposits: How to Safely Clean Your Engine
- How to Diagnose and Fix Engine Misfire Code
- OBDII Scan tool Modes
- The most common engine misfire causes
- Volkswagen GTI Misfire
No crank
- Car Won’t Start With a Jump: The Biggest Mistake DIYers Make
- Car Won’t Start: No sound when turning the key
- Dash lights flash rapidly but car won’t start
- Ford starter wiring diagram
- GM starter wiring diagram
- How to charge a car battery after a jump start
- No crank no start – Chrysler product
- No crank, no start
- Reversed Jumper Cables and Car Won’t Start — What to Check
- Subaru won’t start
- Troubleshooting Guide: Car Won’t Start in Cold Weather
- What to Do When Your Car Won’t Start: Troubleshooting Guide
No start
- Car won’t start after filling with gas
- Car Won’t Start With a Jump: The Biggest Mistake DIYers Make
- Car wont start but it has a good battery
- Chevrolet Cobalt No Start
- Chevy Silverado won’t start
- Dash lights flash rapidly but car won’t start
- Focus no start
- Ford starter wiring diagram
- Fuel pump whine on GM diesel engines — Bulletin 18-NA-10
- GM starter wiring diagram
- Hyundai Accent No Start
- Jeep no start
- No crank no start – Chrysler product
- No crank, no start
- Rapid clicking noise when trying to start engine
- Reversed Jumper Cables and Car Won’t Start — What to Check
- Subaru won’t start
- Troubleshooting Guide: Car Won’t Start in Cold Weather
- What to Do When Your Car Won’t Start: Troubleshooting Guide
- Why your car won’t start after filling with gas
Noises, squeaks, squeals, click
- Engine ticking noise — Most common causes
- Find and fix squeaks chirps and rattle noises in your car
- Grinding noise while driving: The most common causes
- Why WD-40 should never be used to quiet fan belt noise
Overheating
Rough Idle, Surge, Hesitation, Stall
- Bad idle air control valve
- Rough idle when warm
- Rough idle, high idle
- Top 10 rough idle causes
- What causes car stalling?
- Why your car won’t start after pumping gas
By Trouble Code
- A Toyota P2443 Code is pretty common and is a DIY fix.
- BMW OBD2 codes
- Check engine light on but no codes stored
- Chrysler OBD2 codes
- Free Check Engine Light Test at Auto Parts Stores — It’s Not a Diagnostic
- GM OBD2 codes
- Honda OBD2 codes
- Isuzu OBD2 codes
- Kia OBD2 codes
- Lexus OBD2 codes
- Mazda OBD2 codes
- Mitsubishi OBD2 codes
- Nissan OBD2 codes
- P0030 Code — What it means, how to fix
- P0100 trouble code
- P0103 trouble code
- P0107 Code for Manifold Absolute Pressure Sensor
- P0108
- P0109
- P0110
- P012B code on F150 — Most likely causes
- P0133 Code — What it means and the most common causes
- P0138 Code — What it means and how to fix it
- P0172 code: What it means and the most common causes
- P0174 code — The most likely causes and fixes
- P0400 code — What it means and how to fix it
- P0401 code — What it means and how to fix it
- P0401 EGR insufficient flow
- P0404 code for EGR — What it means and how to fix it
- P0405 code for EGR — What it means and how to fix it
- P0442 code and P0455 P0456 Fixes on a Ford vehicle
- P0496 purge flow code — What the code means and how to fix it
- P060E Code on GM Vehicles — Service Bulletin Fix
- P0846 Code on Nissan — Service Bulletin Fix
- P129F or P023F code, along with no start, stalling, no power on GM vehicles
- P2185 code on a Honda
- P2763 code Subaru — How to diagnose and fix
- Subaru OBD2 codes
- Understanding trouble code P0152
- VW OBD2 codes
Catalytic converter
Diagnostic Tips
- ABS module replacement cost and repair
- Automotive relay wiring diagram
- Car struggles to start — The most common causes
- Check engine light on but no codes stored
- Chrysler Evaporative Emissions System — How it works
- Clean a MAF sensor — step by step guide for DIYers
- Diagnose car noises the professional way
- Dome light stays on
- Engine ticking noise — Most common causes
- erratic gauges
- Find and fix squeaks chirps and rattle noises in your car
- Free wiring diagrams
- GM PassKey and PassLock overview
- GM starter wiring diagram
- How to Remove a Honda Crankshaft Bolt Safely and Easily
- How to Safely Test an Alternator with a Digital Multimeter
- MAP sensor — what it does
- Readiness Monitors and Drive Cycles
- Should you buy a car extended warranty? — It depends on the brand
- Test a fuel pump: A Step-by-Step Guide
- Test master cylinder
- The 6 most common symptoms of a dead car battery
- The benefits of using back probe pins and probes
- The most common engine misfire causes
- The safe way to test an alternator
- Throttle position sensor TPS
- TIre pressure light on when temperature drops
- Water pump leak symptoms
- Your Passenger Side Carpet is Wet: The most common causes