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Category Archives: DIY maintenance
Welcome to the heart of keeping your Scion tC running strong — our DIY Maintenance section is packed with essential, easy-to-follow guides that help you care for your car like a pro. From routine oil changes and CEL diagnostics to suspention overhauls, and tune-ups, this category gives you the know-how to confidently maintain your ride, save money, and extend its life mile after mile. Whether you’re new to wrenching or a seasoned enthusiast, this is your go-to source for practical maintenance tips that keep your tC on the road.
DIY maintenance, general info
Fuel. Air. Spark. Why Your Scion tC is Staging a Protest in the Parking Lot
A guide for every tC owner who has ever turned the key and got nothing — written with love, judgment, and a deep respect for Toyota’s most underrated coupe.
DIY maintenance, drivetrain transmission
DIY Automatic Transmission fluid ATF Type T-IV and OEM filter flush and fill maintenance
Step-by-step DIY guide to draining and refilling automatic transmission fluid. No power flush, just a safe and effective service at home.
DIY maintenance, replacement part
Energy Suspension Polyurethane transmission mount bushing removal and installation
Ditch the mushy OEM transmission mount and install polyurethane bushings. Your car will thank you, and you’ll stop asking “What’s that noise?”
DIY maintenance, DIY restore
Valvoline claims it cleans engines. Really? Here’s My 12,000 mile journey using Valvoline Restore & Protect
Want to know whether Valvoline Restore & Protect actually removes deposits or just slick marketing? My hands-on experience with this engine-cleaning oil.
DIY maintenance, suspension upgrades
Installing inner and outer polyurethane bushings on the lower control arm 2005-2010 Scion tC
In this article I talk about the lower control arm replacement bushing options for the 2005-2010 Scion tC
In this article I give you info on the Felpro valve cover gasket for the 2AZ-FE 2.4L Toyota engine
In this article I describe the process I used to do a basic drain and fill of the power steering fluid to smooth out my steering issues.
DIY maintenance, replacement part
How to program a new keyfob car remote for the immobilizer and keyless entry
The 2005-2010 Scion tC has 2 different procedures to reprogram a replacement keyfob remote. One for the immobilizer and One for the keyless entry.
DIY maintenance, part numbers
Iridium spark plugs – Denso SK20R11 (3297), NGK IFR6T11 (4589), Bosch 9603
Struggling with rough idle, misfires or poor MPG? Choose replacement Denso, NGK, or Bosch Iridium spark plugs for your next maintance.
DIY maintenance, part numbers
O2 sensors: Upstream Air/Fuel Denso 234-9049 & Downstream Denso 234-4149
Bad O2 sensors lead to check engine lights and poor MPG. Here are the exact Denso upstream and downstream replacements for your Scion tC.
DIY maintenance, replacement part
Replace the brittle or melted ignition coil sockets harness terminals, no need to solder wires
Your coil harness is dying and you might not even know it. Melted clips and brittle connectors are silently causing misfires and CEL codes. Learn the cheap fix.
Replace that worn crankcase breather tube, before your mom asks if your Scion tC is trying to communicate in Morse code.
DIY maintenance, replacement part
Genuine Denso 673-1307 replacement ignition coil packs for the 2AZ-FE
In this article I show you genuine Denso ignition coils. There are a lot of counterfeits out there so this will help you identify real coils
In this article I show you how to replace your PCV valve as standard maintenance
In this article I show you how I fixed the infamous P0420 CEL code. Unfortunately I ended up being a bad catalytic converter
If you disconnect your battery, you might have to reprogram your driver’s side window control switch for the passenger window. Here’s how to do it.
Fix a P0455 EVAP leak code with this DIY guide. Covers symptoms, common causes, and repair steps for large EVAP system leaks.
DIY maintenance, drivetrain transmission, wheels tires
Fullway HP108 225/45/17 all season tires on 17×7 OEM split spokes good budget value tires
In this article I talk about Fullway HP108 all season tires which turn out to be good value budget tires
The “maint reqd” light is an indicator that lights up when it’s time to do an oil change. Here’s how to reset the maintenance light.
DIY maintenance, intake system
DIY Throttle Body Cleaning Tips Fix Rough Idle & Restore Throttle Response
Rough idle or poor throttle response? Learn simple DIY throttle body cleaning tips that restore smooth idle, better response, and drivability fast.
DIY maintenance, engine related
Using Costco Kirkland 5W-30 Fully Synthetic motor oil and OEM Toyota 90915-YZZF1 filter
Costco Kirkland fully synthetic 5W-30 is perfectly fine and good value motor oil for any 2005-2010 Scion tC
In this article I show you how to replace the AC Condenser and check the desiccant drier element
DIY maintenance, replacement part
Driver / Passenger door molding trim replacement 2005-2010 Scion tC
In this article I show you how to remove and replace the front window door molding
In this article I’ll talk about 1st Gen Scion tC OE wheel alignment specifications including camber, caster and toe. These three angles define how your wheels sit and steer relative to the car. Correct alignment affects tire wear, straight-line stability, steering feel, and cornering grip.
In this article I show you how to troubleshoot a P0171 System Too Lean Bank 1 CEL using a cheap smoke leak tester I bought from Amazon.
This article talks about some of the most common Check Engine Light (CEL) codes on the Scion tC
In this article I show you how to reset the TPMS light. The TPMS system is different on the 2005-2006 and 2007-2010 Scion tC.
In this article I talk about how MOOG and Detroit Axle make thicker OEM replacement end links for the front and rear of the 2005-2010 Scion tC
In this article I give you tips and tricks on how to install Raceland Classic Coilovers
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