Free Car Diagnostic

Showing posts with label Common Car Problem. Show all posts
Showing posts with label Common Car Problem. Show all posts
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Car Stalls at Idle

Generally speaking, car stalls at idle is an indication of a fuel problem specifically lack of fuel. Reasons which cause the car to stalls at idle are a bad idle air bypass valve, a bad cold start valve, or a bad fuel pressure regulator.

 Reasons why car stalls while driving
1. Bad idle air bypass valve
2. Bad cold start valve
3. Bad fuel pressure regulator

What to do?
Quickly step on the gas pedal and observe if the engine will continue running. If the engine continues to run it means that the problem is a bad idle air bypass valve. Fuel injection car have a device called idle air bypass valve, the purpose of this device is to maintain the idle speed of the engine. If this device is not functioning properly then the engine will stall. When the gas pedal is depressed when the engine is about to stall is an indication of a bad idle air bypass valve. By stepping the gas pedal will increase the throttle which compensate for the bad idle air bypass valve giving the engine enough fuel to continue running.  Replace the bad idle air bypass valve to correct the problem.

However, if the engine will not continue running even when the gas pedal is depressed then it’s not a case of a bad idle air bypass valve.

Now, observe if the car stalls while driving happens only if the engine is cold but will not happen after the engine has warmed up then the problem is a bad cold start valve. Fuel injection car has a device called a cold start valve. The purpose of this device is to keep the engine running when the engine is cold by providing the engine more gas so that the engines have a rich air/fuel mixture. Replacing the bad cold start valve will fix the problem.


If the air bypass valve and the start valve is not the problem then the only remaining possible reason why your car stalls while idling is a bad fuel pressure regulator. Generally speaking, car stalls at idle is an indication of a fuel problem specifically lack of fuel. Fuel injection car have fuel pressure regulator, the purpose of this device is to maintain the fuel pressure to each of every injectors. If there is a problem with this devise the engine will be deprived of fuel which will cause the car to stall. Replace the fuel pressure regulator to fix the problem.
Car Stalls at Idle
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Bring the car to a shop and ask the mechanic to verify the problem, if the problem is confirmed replace the defective parts as necessary.


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Black Smoke from Exhaust of Car

Black smoke from the exhaust of the car comes out while driving. The possible reasons for black smoke from the exhaust is a clogged air filter, bad fuel injector sensor (throttle position sensor, coolant temperature sensor, and mass airflow sensor).

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Battery Light On and Off While Driving

 
Battery Light On and Off While Driving

The battery warning light indicator on dashboard is occasionally on and off while driving the possible reason is that the alternator is failing or the alternator belt is slipping.

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What Causes Ticking Noise in Engine While Running

 
Ticking Noise in Engine
Ticking Noise in Engine

What causes ticking noise in the engine? If ticking noise in the engine is heard while running is an indication of a poorly lubricated engine. The reasons for this is the oil inside the engine is not enough or just simply the engine lacks engine oil or the oil pressure inside the engine is low.


What causes ticking noise in the engine?

Ticking noise is related to engine oil problem, with that said the focus of troubleshooting for this kind of problem is limited to checking the engine oil do the following.

1) Lift the hood of the car and locate the dipstick for the engine oil. Check the engine oil level by removing the dipstick. Wipe the end portion that dips with oil using a clean cloth.
2) Put back the dipstick on the original location (dipping it again on the engine), and put it out again and check the reading. If the reading is below the full line then the engine oil is low.

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When the engine oil is low then the engine is poorly lubricated. This causes the engine ticking sound that you heard coming from the engine.

If the dipstick reading is within the full line this means that the oil level is enough and bring us to the next possible reason for engine ticking which is a low engine oil pressure inside the engine.

Now to confirm if the oil pressure inside the engine is low, Observe the oil indicator on the dashboard, if the oil indicator light comes on while the ticking sound occurs then there is a problem with lubrication system, why does your car's oil light come on? well, it is a case of low oil pressure. Otherwise, it is a leaking exhaust manifold or a loose valve is causing the ticking sound in the engine.

 Causes Ticking Noise in Engine

When the oil pressure is low not enough oil will reach most of the engine components causing ticking noise from the engine. What causes the oil pressure to become low? The oil pressure will become low if the oil pump is faulty or if the oil pan screen is clogged.

Possible cause of ticking noise in the engine
Poor engine lubrication because of low engine oil level, low oil pressure because of faulty oil pump or clogged oil pan screen, loose valve or leaking exhaust manifold.

How to fix ticking noise in the engine
Engine lubrication is poor. Add enough oil in the engine. Consult the vehicle owner’s manual for the type of oil to be added.

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Oil pressure is low. Bring the car to the car shop to determine whether bad oil pumps or a clogged oil pan screen is causing the ticking noise in engine and repair if necessary.

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Exhaust manifold leak or loose valve. Bring the car to a shop and ask the mechanic to check for any loose valve in the car engine or a leak on the exhaust manifold. Sometimes a valve adjustment or a tightening of loose bolt on the exhaust manifold can solve the problem of engine ticking noise that causes by these car problems.

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Suggested Articles:

Nissan Navara Oil Low Light Reset


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Car Jerks When Accelerating

Car jerks when accelerating especially during cold rainy morning when the engine is cold. Several reasons are causing it depending on the condition of the car when it happened. 

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Engine Ticking Noise While Driving

Engine ticking noise while driving is heard or there is a slight tapping noise from the engine while the engine is running.

 

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Temperature Gauge Read Hot After the Engine Start

The temperature gauge reads hot after the engine is started. Several reasons are causing this such as the radiator lacks coolant, the hose of the radiator is collapsed, the water pump is faulty, or there is a problem with the thermostat.


Steering Wheel Feels Loose at High Speed

While driving your car the steering feels sloppy or loose especially when driving at high speed.


Car Shakes When Stopped

The car shakes when stopped, the entire car shaking occurs during the application of brakes when the car is stopped. The reason for this problem is the uneven contact between the brake drum and the brake shoe.


Car Shakes When Idle After Starting

Car shakes when idle after starting, while idle the entire car is somewhat shaking. When the car shakes on idle after start up, it is an indication of a problem on engine misfiring.


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Steering Feels Loose and Sloppy

Steering wheel feels loose and sloppy while driving on a normal road this is because of over inflated tire or there is a faulty front end components.


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Car Loses Power Going Uphill

If a car losses power going uphill driving but have enough power when running on the flat roads then the possible cause of the problem is a worn out rings or the valves are worn out.


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Car Stalling While Driving

Car is stalling while driving. The stalling occurs when the engine temperature is high or even when the engine temperature is normal. The reason for this is because of vapor lock or a faulty fuel pressure regulator.


Car Pulls to the Right or Left Slightly

If a car is pulling to the left or pulling to the right while driving possible reason is the tire pressure is mismatch, the brakes are dragging or the wheel is slightly out of alignment.


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My Car AC is Blowing Hot Air

Car Ac is blowing hot air suddenly or is blowing hot air slowly over time. Cold air is usually coming out the ac vent when the ac switch is turned ON, however, after turning the ac switch ON, the ac vents are blowing hot air.


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White Smoke from Exhaust of Car

There is a noticeable white smoke coming from exhaust of car. The reason why white smoke comes out the exhaust is that condensation is steaming off or the head gasket is damaged.


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Car Cranks but Wont Start

The car cranks but won’t start. The possible reason why car cranks but won’t start are  out of gas, broken timing belt, clogged air filter, battery is weak or frozen battery electrolytes.


Do it yourself

Step by step do it yourself easy to understand basic car maintenance for the car owners.

How to Install a Car Battery

While engine is running, use the meter to check the alternator and voltage regulator output. This is very important because a faulty alternator or voltage regulator can cause a premature battery failure and you do not want this to happen.

How to Check Tyre Pressure

The tyre thread life could reduce if the tyre pressure of your car is under what the car manufacturer specified on your car owner’s manual.

How to Change a Flat Tire

When you encounter a flat tire while you drive your car the first thing to do is to pull off the road away the traffic as possible.

How to Recharge a Car Battery

Before attempting to recharge car battery always make sure that the battery is at room temperature (60 °F to 80°F). Also, when it is extremely cold remove the battery from the car and bring it indoors to allow the battery to become warm before begin the charging.

How to Disconnect a Car Battery

Do you know how to disconnect a car battery? Suppose you want to clean or replace the battery and needed to disconnect the battery to make the job well then here is what to do.

How to Replace Windshield Wipers

When you have a car it is important that you have knowledge with basic car maintenance like this simple step on how to replace windshield wipers.

How to Jump Start a Car Battery

Jump a starting car is easy but should be done correctly so that accident such as a battery explosion can be avoided that may result to the damage of your car or worst injured you.

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