Toyota 4Runner:  Oil in Coolant Diagnosis

If you’ve recently checked your Toyota 4Runner’s coolant, and it looks almost like it has butter in it, then you probably have oil in it.  Oil in your coolant is most often caused by a blown head gasket. It can also be caused by a cracked head or even a bad radiator (well sorta, you’d … Read more

Toyota 4Runner:  Overheating → Symptoms + Causes

One of the worst problems that can happen to your Toyota 4Runner is overheating.  Common symptoms of overheating include smoke coming from under the hood, a pegged temperature gauge, and (eventually) a blown head gasket. If your 4Runner is overheating, stop driving it immediately to avoid damaging the engine. Ignoring an overheating engine can lead … Read more

Toyota 4Runner: Window Won’t Go Up Diagnosis

Your Toyota 4Runner’s windows protect you from the elements, and they protect the interior from damage.  If your window won’t go up, there are a few common issues that can cause this problem.  These include a blown fuse, bad window motor, wiring issues, and the switch.     Power Window Won’t Go Up Causes:  Toyota 4Runner … Read more

Toyota 4Runner:  Brake Fluid Leak Causes & Diagnosis

  Your Toyota 4Runner’s brake system is the most important safety feature on the vehicle.  Without a reliable braking system, it is dangerous to keep driving your 4Runner.  A brake fluid leak is a serious problem.  It is usually caused by a failure of a seal, brake line, master cylinder reservoir, and a few other … Read more

Toyota 4Runner Bad Ignition Switch: Symptoms, Causes, + How to Fix

Your Toyota 4Runner‘s ignition switch is one of the most vital items on the entire vehicle.  If it fails, the entire vehicle won’t be able to run.  We’ve compiled some of the most common symptoms of a bad ignition switch.  These include stalling issues, not starting, and no power to the radio or accessories. Function of an … Read more

Toyota 4Runner Bad Throttle Body: Symptoms + Diagnosis

If your Toyota 4Runner has a faulty throttle body, it can cause it to run terribly.  Common symptoms of a bad throttle body include dirt and grime, the check engine light, and an erratic idle. Your 4Runner’s throttle body controls the amount of air that enters the engine.  You control the throttle body position with … Read more

Toyota 4Runner: Bad Thermostat → Symptoms & Diagnosis

The thermostat in your Toyota 4Runner’s engine plays a crucial role in regulating its temperature. A malfunctioning thermostat may lead to various issues and should be dealt with immediately. Some of the most common symptoms of a bad thermostat are no heat, a spiked temp gauge, a blown head gasket, and more. A thermostat failure … Read more

Toyota 4Runner:  Bad Serpentine Belt

One of the most common issues with a vehicle is a bad serpentine belt.  If you suspect that your Toyota 4Runner has this problem, we’ll give you the common symptoms below, as well as how to replace it. The good news is that serpentine belts are cheap, and in the grand scheme of things, relatively … Read more

Toyota 4Runner: Uneven Tire Wear → Causes

  Uneven tire wear can happen at any time in the life of a vehicle.  If your Toyota 4Runner is experiencing this situation, taking corrective action when you first notice it is important.  Otherwise, you may end up needing a new set of tires.   Toyota 4Runner Uneven Tire Wear Causes There are a few … Read more

Toyota 4Runner Low Transmission Fluid: Symptoms and Diagnosis

There are several symptoms to watch for that suggest your 4Runner might have low transmission fluid. Some of these signs include irregular shifting, inability to shift, dashboard warning lights, slipping transmission, and strange noises coming from under the hood. If you suspect that your 4Runner has low transmission fluid, the first thing you should do … Read more