Toyota 4Runner:  Oil On Spark Plug Causes

If you’ve found oil on your Toyota 4Runner’s spark plug, it should be a cause for concern. It doesn’t necessarily indicate a major engine problem.  When there is oil on the spark plugs is usually caused by a bad valve cover gasket or O-Ring (overhead cam engines).  There can be other causes as well. Any … Read more

Toyota 4Runner:  Bad Wheel Bearing Noise Diagnosis

If your Toyota 4Runner is making a high pitched noise or hum, it could be a sign of a bad wheel bearing.  There are several different vehicular components that can make a squeal or hum.  That’s why it is important to know the other warning signs of a  bad bearing before just going in and … Read more

Toyota 4Runner: Brake Sticking → Causes & Diagnosis

  Your Toyota 4Runner’s braking system is the most important safety feature on the vehicle.  If it does not work properly, it can put you in a situation where you can be injured or killed.  There are quite a few different situations that can cause a caliper to stick. Toyota 4Runner Brakes Sticking Symptoms Smell– … Read more

Toyota 4Runner:  Maint Reqd Light Meaning

  The Toyota 4Runner’s maint reqd light indicates a service interval has been met.  These intervals happen at mileage or time intervals (typically every 5000 miles/6 months).  The maintenance required light is standard in all newer Toyota vehicles, and helps insure long life and dependability by making sure factory maintenance intervals are met.   Toyota … Read more

Toyota 4Runner:  Radiator Fan Not Working Diagnosis

Your Toyota 4Runner‘s radiator fan has one of the most important jobs on the vehicle.  It is the last line of defense between you and an overheating engine.  If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. … Read more

Toyota 4Runner: Signs of Alternator Problems

One of the most critical engine components in your Toyota 4Runner is the alternator. If you suspect that you have alternator problems, it’s something that should be dealt with before you end up stranded somewhere. Your 4Runner’s battery will not be able to keep the accessories and engine systems running for long without a properly … Read more

Toyota 4Runner Stuck in Park: Causes & How to Fix

If your Toyota 4Runner is stuck in Park, the odds are that you’re not stranded.  We’ve made this guide to quickly help you get back on the road if your vehicle doesn’t shift into gear.  Most vehicles with an automatic transmission have a linkage that connects the gear selector to the transmission. Recently, more vehicles … Read more

Toyota 4Runner Stalling → Causes & Diagnosis

One of the most common issues your Toyota 4Runner is likely to develop is a stalling problem.  The most challenging part of diagnosing a stalling problem is reproducing the conditions that led to the stall in the first place.  Stalls can happen at any time, and it can be incredibly jarring when it does happen. Before … Read more

Toyota 4Runner Shakes When Idle:  Causes and How to Fix 

It can be very jarring when your Toyota 4Runner shakes when idle.  If your 4Runner has this problem, many issues can cause it.  We’ve lined out some of the most common causes below. The most common reasons a vehicle shakes when idling is a misfire or bad motor mount. Table of Contents Toyota 4Runner Shaking … Read more

Toyota 4Runner: Service Engine Soon Light → Diagnosis

Your Toyota 4Runner’s service engine soon light is there to let you know that some sort of problem has been detected with the vehicle. Any vehicles made in 1996 or newer use OBDII codes, which can easily be retrieved from a good code scanner. A flashing service engine soon light is telling you that something … Read more