4 Common Toyota 3.5 V6 Engine Problems And Effective Solutions

Toyota’s impressive engine is robust and reliable, but this power comes with great responsibility, and unfortunately, the 3.5 V6 engine isn’t always capable of bearing these responsibilities. Toyota 3.5 V6 Engine Problems are also an example of that kind of engine experience.

This automobile possesses a few problems. These problems are mostly from the flaws found in the engine’s design and less from its owner’s neglect.

All problems are fixable, and so is every issue you encounter with the Toyota 3.5 V6 engine.

What Is A Toyota 3.5 V6?

The Toyota brand is trendy all over the world. Almost every driver, car owner, and even pedestrian is familiar with the brand.

Although many know the brand, most people aren’t familiar with the numbers and alphabet that follow every Toyota’s engine name.

Whereabouts

The Toyota 3.5 V6 is a six-cylinder engine. It possesses a V-like shape, which was designed primarily to save space.

The “V” in V6 originates from its structure, and the six beside it represent its number of cylinders.

One of the reasons it is popular among brands like Toyota is that the V6 possesses a unique design that sets it apart from other engines.

It also has the ability to fit into small spaces while still being able to contain the same if not more liters of fuel. It is also famous for it’s smooth, quiet, and calming vibrations.

The 3.5 V6 can produce soft sounds when running due to the elimination of the vibrations caused by its piston’s movement along one side of the engine by the piston’s motions along its other side.

Concept

Every gasoline engine function is based on a straightforward concept; they all use the energy produced by the fast, intense, and repetitive pattern of controlled explosions that happen in compartments called combustion chambers.

A combustion chamber is a part of an engine that holds highly flammable air and gasoline mixtures.

For explosions to happen, this mixture in the combustion chamber has to be transferred to the piston.

A piston compresses this mixture under intense pressure then the transmission process occurs almost automatically.

The car’s spark plug later ignites the gasoline and oxygen mixture, causing an explosion to take place.

This explosion releases incredible energy that flows from the engine’s piston to the crankshaft and then to the wheels, causing the car to propel forward.

This process doesn’t occur only once. It must happen several times per second in each cylinder of the engine for the vehicle to move.

Because this process occurs in all six of the V6 cylinders, the Toyota 3.5 checks the performance, efficiency, horsepower, torque, and economy box of many owners.

Features of The Toyota 3.5 V6

Any Toyota automobile that makes use of a 3.5 V6 engine shares some similar properties that distinguish them from other vehicles in the automated industry.

The 3.5 V6 engine possesses a beautiful balance between grace and technology. It gives you incredible horsepower while allowing its driver to enjoy the joy of driving a metallic beast.

This feature can be attributed to the engine’s fuel-injection systems.

Below are other exciting features of Toyota 3.5 engines:

  • 200 – 295 HP
  • 263 lbs.-ft for its torque
  • 21/27 MPG (city/hwy)
  • The towering capacity of 5,000 lbs and 3,500 lbs in the 3.5 V6 hybrid version.
  • LE Plus, XLE, SE, Limited, & Limited Platinum trim availability.
  • An eight-speed transmission design.

There are some extra features of Toyota 3.5 engines given below:

Balance

The 3.5 V6 engine possesses a beautiful balance between grace and technology.

It gives you incredible horsepower while allowing its driver to enjoy the joy of driving a metallic beast.

This feature can be attributed to the engine’s fuel-injection systems.

It’s 45-psi port-injection system because its effectiveness is in control of start-up, and a separate injection system that uses high-pressure handles other necessary activities.

Fuel Saving

3.5-liter V6 engines are world renounce for their ability to produce multiple combustions per second while conserving gas.

If you are looking for a ride high in horsepower but is still economical and won’t destroy your finances, then a car with this type of engine is your best choice.

Smoothness

Engine designs using six-cylinders do not release as many vibrations as those with a four-cylinder system. This is because of the lap in power strokes of these engines.

A six-cylinder engine also fires its next piston at a power stroke of 60° before the previous one ends. This results in a smooth transfer of power to the flywheel.

High Torque Peaks

V6 engines produce torque peaks of about 150% above mean torque peaks and 125% valley, unlike a four-cylinder design, which usually makes a 300% above mean torque and 200% valley below mean torque. And a tiny amount of negative torque between strokes.

Square-cross Section Wiring

Another V6 engine feature is its square-cross section, which helps increase the electrical field intensity while reducing mass.

This allows engineers to use smaller bearings and lighter parts, allowing for more alternator output from less crankshaft energy.

Common Toyota 3.5 V6 Engine Problems

“Everything comes with a price”; is a famous saying for good reasons.

Paying that price is something you might have to do when buying/using a Toyota 3.5 V6 engine.

Although V6 engines provide one of the best performances in car’s history, it occasionally comes with minor issues like:

01. Overheating

Every mechanical or electronic device ever made was innovated with its own way of cooling its system.

With cars, the part which prevents them from malfunctioning due to overheating is the coolant.

Modern technology has continued to provide genius ways of cooling automobiles engines, but these brilliant measures sometimes fail.

Causes

Overheating can be caused by many things, from leakage in the cooling system, a blockage in the coolant to water pump failure – the most common cause of overheating in Toyotas.

In the past, reducing the heat of an engine was usually carried out by passing air into it.

As the demand for a more effective cooling engine method grew, engineers devised the antifreeze liquid method, but unfortunately, since it’s liquid, there is always the possibility of it leaking.

The leakage in a car’s cooling system is dangerous because the coolant is escaping, but majorly because air sips into the leaks’ cooling mechanism.

These leaks that affect the cooling system cause airlocks to occur.

The big issue with an airlock is that it prevents the air bubbles from being forced out of the cooling mechanism, causing a stop in circulation.

While in the instance of a blockage, there is an in-direct attack on the cooling system.

Whatever blocks the coolant from going from the non-cooling system to the cooling system prevents the engine’s heat from dispersing.

Prevention

To prevent heat from escaping, check your thermostat and ensure it opens, find and remove any mineral deposit or foreign object if it’s blocking your radiator.

Toyota and water pump issues tend to go hand in hand, so always check your water pump before going out on a drive because it is most likely to be the cause of overheating.

Another cause of overheating could be the gelling up of your coolant. This gelling usually occurs during cold weather conditions.

02. High Oil Consumption

Toyota 3.5 V6 and excessive oil consumption go together like bread and butter.

Most Toyota owners are probably used to buying gallons and gallons of oil to prevent their engines from being oil-deprived.

A 3.5 V6 engine consumes about 1 quart of oil in about 1,200 miles. Compared to a four-cylinder system, it is almost outrageous.

Engine designs using six-cylinders do not release as many vibrations as those with a four-cylinder system. This is because of the lap in power strokes of these engines.

Even the company finally accepted this oil swallowing feature after many Toyota 3.5 V6 engine users incessantly insisted on free oil maintenance services.

On 11th August 2011, Toyota issued a technical service bulletin (TSB) to dealership mechanics containing instructions on repairing this engine so that it wouldn’t consume so much oil.

03. Engine Knocking

Toyotas produces a smooth and calming sound when in the drive.

If your soft rumble turns into an annoying tapping or pinging noise, which tends to be very loud or speeds up when you are accelerating, you are probably experiencing a case of engine knock.

Engine knock is when sounds of different types come from your engine. Engine knock has behind it, a variety of reasons. Here are some:

  • Bad engine timing.
  • Lean air/gas mixture.
  • Old bearings.
  • Inadequate knock sensors.
  • Bad accessory belt.
  • Multiple Detonations.

04. Misfire or stall

When a car is said to misfire, it means that the three components of the automobile, i.e., the fuel, oxygen, and spark plugs, aren’t working in sync.

The combustion process of an engine requires all of these three components to function with absolute precision.

Any slight deviation will cause the engine not to perform correctly.

For example, if the gas and oxygen ratio is off, the mixture may not be combustible.

A gas and oxygen mixture in an engine that isn’t explosive inherently means the machine can’t work.

Some causes of misfire include:

  • Faulty ignition system.
  • Bad fuel system.
  • Faulty cylinders.
  • Faulty Oil Pumps
  • Burned Valves
  • Crankshaft pulley bolt
  • Transmission failure

Solutions To Toyota Tacoma 3.5 V6 Engine Problems

Here are a few ways of solving the problems mentioned above:

01. How To Fix Overheating

A Toyota engine, when running, is generally between the temperature of 195 to 220 degrees Fahrenheit.

For a car to give its best performance, this temperature range should always be consistent.

Overheating can be fixed easily. You can even do it yourself. Below are steps that will help you get rid of your engine Overheating problems.

Step 1: Double-Check Your Thermostat.

Start your engine, place your finger on the top of the radiator hose. As the engine gradually heats up, the thermostat should open up to help channel some of the hot air generated out.

The channeling should make the radiator hose not too hot to the touch, but just slightly uncomfortable. If it doesn’t, your thermostat is most likely faulty.

Step 2: Monitor Your Coolant Level.

Always check your coolant levels as regularly as possible.

The expansion tank should always read somewhere between “min” and “max” and not read either of the extremes.

Step 3: Always Check For Leaks.

Step 4: Check and replace the electric fan for the radiator if faulty.

Here is a DIY guide that can help you fix your overheating without spending $500 to $1,500 on repairs.

02. High Oil Consumption Solution

Older models of Toyota tend to have this problem. Oil burning isn’t an easy problem to fix. It can also be expensive, depending on what caused the issue.

If it’s your valve, the service cost would be around $100. For a gasket head repair, that would be $900 to $1,400 for each cylinder head.

The most expensive to fix is a blown motor. This can cost about $2,500 to $5,700.

If you would like to fix your oil burning issue yourself, you should follow this DIY guide.

03. Engine Knocking solutions

Engine Knocking can lead to severe damages for both the car and its owner if not quickly repaired.

To prevent severe damage and reduced efficiency, we have listed below some tips that can aid in stopping your engine from knocking:

  • You need to upgrade the fuel that you put into your car. Go with gas that has a higher-octane rating.
  • Purchase and use additives designed to eliminate carbon buildups.
  • Insert new spark plugs regularly or tell your mechanic to do so during every maintenance session.
  • Something as necessary and basic as a regular old change can solve an engine knocking issue. Sometimes, difficult problems have simple solutions.

Pros of A Toyota 3.5 V6 Engine

  • They are economical when it comes to fueling:
    If you are looking for a ride high in horsepower but is still economical and won’t destroy your finances, then a car with this type of engine is your best choice.
  • 3.5-liter V6 engines are world renounce for their ability to produce multiple combustions per second while conserving gas.
  • With horsepower of 200 to 295 HP, its two extra cylinders provide more horsepower for its users than other four-cylinder cars.
  • Due to the unique design of the V6 engine, it produces smooth vibrations when running.
  • V6 engines produce torque peaks of about 150% above mean torque peaks and 125% valley, unlike a four-cylinder design, which usually makes a 300% above mean torque and 200% valley below mean torque.
    And a tiny amount of negative torque between strokes

Cons of Toyota 3.5 V6 Engine

A few of the cons that the V6 engine is known to have include:

  • Among some of the prominent critics of the 3.5 V6 engine is its notorious ability to release vast amounts of harmful emissions into the air.
  • Toyota 3.5 V6 has a prevalent oil burning problem. If not careful, your engine V6 could get destroyed if this problem isn’t effectively corrected.
  • The V6 engine and its camshaft are long. Their natural design structure lengths tend to block and cause difficulties for the vehicle when they try to turn or flex.

Verdict

In this article, we have provided you with all the necessary information regarding the Toyota 3.5 V6 engine.

Toyota 3.5 V6 engine problems, features, the solutions to the mentioned problems, advantages, and disadvantages of this automobile have been cited and addressed adequately.

We trust that our article will go a long way in helping interested buyers better understand the car they plan to buy and also help them make the best decision possible.

We hope that you now understand the Toyota 3.5 V6 engine’s many advantages, and disadvantages and also keep in mind that they can be easily fixed.

Any car owner would be lucky to drive a car powered by a 3.5 V6 engine.

To know more about Toyota Tacoma Engine Problems; https://carbrain.com/blog/common-toyota-tacoma-problems 

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