Cars, Maintenance and Automotive Knowledge — Projects¶

Project-based learning cements knowledge in a way that reading and exercises alone cannot. Building something real forces you to confront gaps in your understanding and make decisions that tutorials never put in front of you.

How to Use This File¶

1. Choose a project at or slightly above your current level.
2. Don't use tutorials for your chosen project. Tutorials are for learning, projects are for applying.
3. Document your attempt using the Project Attempt Template at the bottom.
4. When you finish, link the result (photos, notes, documented findings) in the table in the topic README.

Beginner Projects¶

Focus: get comfortable with inspection, fluid checks, and basic tool use. Complete at least one before advancing past Phase 1.

B1: Full Fluid Inspection and Top-Up¶

Description: Inspect and document every accessible fluid in your vehicle — engine oil, coolant, brake fluid, power steering fluid, transmission fluid (if accessible), and windshield washer fluid. Top up any that are low. Record what you found in a simple log.

Concepts Reinforced: - Fluid system knowledge from Module 01 - Fluid types and specifications from Module 02 - Safety practices for working under the hood

Estimated Time: 1–2 hours

Starting Point: Your own vehicle (or a willing friend's), plus your owner's manual for fluid specs

Success Criteria: - [ ] All fluid levels checked and documented with current level, minimum, and maximum marks - [ ] Any fluids that needed topping up refilled with the correct specification fluid (confirmed in owner's manual) - [ ] No spills; no wrong fluids added - [ ] Written record of findings created

B2: Tire Inspection and Pressure Normalization¶

Description: Inspect all four tires (plus spare) for tread depth, uneven wear patterns, sidewall damage, and embedded objects. Measure and adjust pressure to the vehicle's specified pressure (found on the door jamb sticker, not the tire sidewall max).

Concepts Reinforced: - Tire anatomy and reading from Module 03 - Tire pressure monitoring - Connection between tire wear patterns and alignment/suspension issues

Estimated Time: 45 minutes

Starting Point: Your vehicle, a tire pressure gauge, and access to an air source

Success Criteria: - [ ] All tire pressures documented before and after adjustment - [ ] Tire tread depth measured at multiple points on each tire (center, inner, outer shoulder) - [ ] Any abnormal wear patterns noted with a hypothesis about cause - [ ] Spare tire pressure checked and documented

B3: Battery Health Assessment¶

Description: Using a multimeter, assess your battery's resting voltage, voltage under load (cranking), and the alternator output voltage. Create a written assessment of battery health and whether replacement is warranted.

Concepts Reinforced: - 12V electrical system from Module 04 - Multimeter use - Battery chemistry and charge states

Estimated Time: 1 hour

Starting Point: Your vehicle, a multimeter (basic digital multimeter, ~$15–30)

Success Criteria: - [ ] Resting voltage measured (engine off, 1+ hour after last use) - [ ] Running voltage measured (engine running at idle) - [ ] Results interpreted against correct ranges (resting: 12.4–12.7V healthy; running: 13.5–14.5V healthy alternator) - [ ] Written assessment produced with recommendation (replace/monitor/good)

Intermediate Projects¶

Focus: combine multiple concepts, perform hands-on maintenance tasks, handle the full procedure safely. Complete at least one before completing Phase 2.

I1: Complete Oil Change Service¶

Description: Perform a complete oil and filter change on a real vehicle, from start to finish. This includes warming the engine, safely lifting the vehicle (or using ramps), draining the old oil, replacing the filter, installing the drain plug correctly, refilling with the correct oil type and quantity, and verifying for leaks.

Concepts Reinforced: - Oil change procedure from Module 02 - Vehicle safety lifting from Module 01 - Oil viscosity selection - Torque specifications for drain plugs

Estimated Time: 2–3 hours (including setup/cleanup)

Starting Point: Your vehicle, correct oil and filter (confirm spec from owner's manual), basic tools (drain pan, filter wrench, socket set), jack stands or ramps

Success Criteria: - [ ] Correct oil specification confirmed before purchasing - [ ] Vehicle raised safely and securely before working underneath - [ ] Old oil fully drained; drain plug reinstalled and torqued correctly (not just "tight") - [ ] New filter installed correctly (rubber gasket lightly oiled; hand-tight plus ¾ turn) - [ ] Correct oil quantity added; dipstick reading confirmed in normal range - [ ] No leaks after starting engine and checking drain plug and filter area - [ ] Old oil disposed of responsibly (auto parts stores accept used oil for free recycling) - [ ] Maintenance log entry created with date, mileage, oil brand, and viscosity used

I2: OBD-II Scan and Fault Analysis¶

Description: Connect an OBD-II scanner to your vehicle (or a willing volunteer's vehicle) and capture a full diagnostic snapshot: any stored or pending fault codes, a set of freeze frame data (the conditions when any DTC was set), and a set of live data readings including coolant temperature, fuel trims, and O2 sensor voltages. Research any codes found and produce a diagnosis report.

Concepts Reinforced: - OBD-II system from Module 07 - DTC code interpretation - Live data reading and analysis - Sensor function from Modules 01 and 05

Estimated Time: 2–3 hours

Starting Point: OBD-II Bluetooth adapter (~$20–30) + free smartphone app (Torque, OBD Fusion, or similar), plus internet access for code lookup

Success Criteria: - [ ] Scanner connected and communicating with vehicle - [ ] All stored and pending DTCs documented with their descriptions - [ ] Each DTC researched: common causes listed and likelihood assessed - [ ] Live data screenshot or recording captured at idle and at driving RPM (if safe to do while stationary) - [ ] Written diagnosis report produced recommending which codes require immediate action vs. monitoring

I3: Pre-Purchase Inspection on a Used Car¶

Description: Conduct a structured pre-purchase inspection on a real used vehicle (a vehicle you are considering buying, a friend's car, or any volunteer). Follow the full inspection checklist from Module 09 and produce a written report scoring each system and recommending a purchase price adjustment or pass.

Concepts Reinforced: - Used car buying from Module 09 - All vehicle systems from Modules 01–08 - OBD-II scanning from Module 07 - Practical diagnostic skills

Estimated Time: 3–4 hours (including research time)

Starting Point: A candidate vehicle and its VIN; the inspection checklist from Module 09; an OBD-II scanner

Success Criteria: - [ ] VIN history report run and reviewed - [ ] All exterior and interior inspection points documented - [ ] Under-hood inspection completed - [ ] Test drive completed (if owner permits) - [ ] OBD-II scan completed - [ ] Written report produced with pass/pass-with-conditions/fail recommendation and reasoning

Advanced Projects¶

Focus: tackle realistic, open-ended maintenance tasks requiring full understanding of the system. Complete at least one to reach Applied Practitioner status.

A1: Complete Brake Service (Pads and Rotors)¶

Description: Perform a complete front or rear brake service: caliper removal, rotor measurement and inspection (replace if worn), pad replacement, caliper reassembly, brake system bleeding if needed, and a test drive to confirm proper pedal feel and stopping performance.

Why This Is Hard: Brakes are a safety-critical system. A mistake can cause brake failure at speed. This project requires careful torque specification lookup, correct bleeding procedure for your vehicle, and a thorough functional test. It also requires more tools than simpler projects.

Concepts Reinforced: - Brake system from Module 03 - DIY repair safety from Module 08 - Torque specifications and proper tool use - Hydraulic brake system operation

Estimated Time: 4–6 hours

Starting Point: Your vehicle, new pads and rotors (confirm fitment before purchase), basic tool set plus torque wrench and C-clamp

Success Criteria: - [ ] Old rotors measured and thickness documented; decision to replace or resurface justified - [ ] All caliper hardware cleaned and lubricated (correct brake lubricant on sliding pins — not on friction surfaces) - [ ] New pads installed with correct hardware; no grease on pad or rotor friction surfaces - [ ] All bolts torqued to specification (not just tight) - [ ] Brake pedal pumped to seat pads before attempting to drive - [ ] Test drive completed — no pulling, pulsation, or spongy pedal - [ ] Maintenance log updated

A2: Spark Plug Service and Ignition System Assessment¶

Description: Replace all spark plugs on a 4-cylinder or 6-cylinder engine, following the correct torque specification, gap specification, and firing order. Inspect the old plugs and document their condition as a diagnostic tool (color, deposits, electrode wear patterns all reveal engine health information).

Why This Is Advanced: Modern cars often have difficult plug access (removing the intake manifold or coil packs). The torque specification matters — over-tightening strips the aluminum threads; under-tightening causes misfires. The old plugs tell a diagnostic story that requires interpretation.

Concepts Reinforced: - Ignition system from Module 05 - DIY repair procedure from Module 08 - Diagnostic interpretation (plug condition as a window into combustion health) - Thread repair fundamentals

Estimated Time: 2–5 hours depending on vehicle

Success Criteria: - [ ] All old plugs removed, photographed, and condition documented (color, deposits, gap wear) - [ ] New plugs gapped to specification (using feeler gauge or gap tool) - [ ] Thread anti-seize applied if required for your application - [ ] All plugs torqued to specification - [ ] Plug condition report produced: what did the old plugs reveal about engine health? - [ ] Misfires absent after restart; no check-engine codes for misfires

Expert / Capstone Projects¶

Focus: synthesize everything. Build something you're proud to show others. Complete one to earn Topic Mastery status.

E1: 100-Point Vehicle Inspection — Full Documentation Package¶

Description: Perform a comprehensive, systematic 100-point inspection of a vehicle, documenting each system's condition with scores, photographs (or written descriptions), cost estimates for any repairs needed, and a prioritized maintenance calendar.

Why This Is a Capstone: This project requires mastery of all major topic areas. You cannot complete it with gaps — they will surface quickly when you're face-to-face with a real vehicle and need to assess something you don't understand. Expect to revisit earlier modules during the build.

Core Requirements: - [ ] Uses concepts from at least 8 different modules - [ ] Inspects all major systems: engine, transmission, brakes, tires, suspension, electrical, HVAC, interior, exterior - [ ] Includes OBD-II scan with code interpretation - [ ] Produces a written report with condition scores, findings, repair cost estimates, and prioritization - [ ] Includes a 12-month maintenance calendar with specific dates and cost estimates - [ ] Is documented clearly enough that the vehicle owner can act on your recommendations

Estimated Time: 8–12 hours

Extension Ideas (if you want more challenge): - Repeat the inspection 6 months later and document what changed - Perform the inspection on two vehicles and write a comparison report - Present your findings to the vehicle owner and explain your recommendations verbally

[!NOTE] The final module of this topic is a dedicated Capstone Project module that walks you through building this for real. It gives you a brief, milestones, and a Help / Getting Unstuck section with staged hints — but it deliberately does not hand you a finished solution. The help is there so you can get past a blocker and keep going on your own, not so you can skip the build. Struggling productively is the learning here.

Project Attempt Template¶

When you attempt a project, create a folder or file documenting your work, and log it here:

# Project: {{PROJECT_NAME}}

**Difficulty:** Beginner / Intermediate / Advanced / Expert
**Started:** {{YYYY-MM-DD}}
**Completed:** {{YYYY-MM-DD}} (or "In progress")
**Time Spent:** {{HOURS}} hours
**Vehicle:** {{YEAR}} {{MAKE}} {{MODEL}} (or "N/A")

## What I Did

{{DESCRIPTION_OF_WHAT_YOU_ACTUALLY_DID}}

## Findings

{{KEY_FINDINGS_AND_RESULTS}}

## What I Learned

- {{LEARNING_1}}
- {{LEARNING_2}}
- {{LEARNING_3}}

## What Was Hard

{{WHAT_WAS_CHALLENGING_AND_HOW_YOU_SOLVED_IT}}

## What I'd Do Differently

{{HONEST_RETROSPECTIVE}}

## Concepts Used

- [[cars-maintenance/modules/01_introduction]] — how you used it
- [[cars-maintenance/modules/0X_module-name]] — how you used it

## Score / Self-Assessment

On a scale of 1–5, how well do I think I executed this project? {{SCORE}}/5

Justification: {{JUSTIFICATION}}