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Symptoms of a Bad or Failing Air Injection Hose
Check your car's air injection hose for signs of damage. If there are idling issues or the Check Engine Light turns on, you may have to replace it.
The Importance of Warming Your Car Before Driving
Scandphoto / Many people feel that it’s important to warm a vehicle up before driving off. This has long been the dominant school of thought, dating from when cars had...
5 Essential Things to Know About Idling
Everyone does it, whether waiting for the kids to get out of school or someone running into the store for an item or two. The problem is, idling, which occurs when you sit with...

Related questions

My car is losing power while I'm driving and while idling
Hi there, this may be an indication of a vacuum leak. As you may know, when a vacuum leak is present, this tends to cause a lean fuel condition which will generally make the engine idle higher than normal. I...
Car is knocking when I hit the gas
Hello. Is the Check Engine Light on? A loud knocking noise coming from the engine is not typically a good sign. First, check to make sure all fluids are are the right level, especially the oil. Metal shavings on the...
The car idles and stalls in cold weather conditions only, or if i don't heat it up all the way in cold weather conditions.
Hello there. Many common faults will cause your 2012 Mazda 3 to idle poorly and stall in cold weather. The most common faults would be the coolant temperature sensor, stuck open thermostat, radiator, water pump, MAF sensor, or a wiring...
Stalling at red lights, and sputters sometimes when I press the gas.
This may be a sign of a failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is controlled by the...
Car idling slowly and losing power
Hello. From what you describe it would appear that your vehicle may be experiencing some sort of serious transmission or engine performance issue. If the transmission fluid hasn't been changed in a long time it may be possible that the...
My car idles rough when I have my foot on the brake at a stop light
This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected...
Vibration in the car - 2003 Dodge Neon
Hello. When issues get worse after a repair, always double check the work that was done. If you check that off right away, then you should look at why the engine is shaking so bad. This is typically due to...
P0420 code after idle relearn
Hello. P0420 is the code for catalyst efficiency below the correct threshold for bank 1. If you do not believe the catalytic converters are the issue, then the first thing I would do is check the bank 1 oxygen sensors....
My RPM needle keeps moving up and down
Hello. This may be related to a faulty idle air control valve. As you may know this is a unit that monitors the air intake into your car's engine as it is mixed with fuel. When this is not functioning...
The car idles up and down. Replaced throttle body temperature sensor, mass airflow sensor, and oxygen sensor.
Hello. If you have taken all those steps and the idle is still not at the correct speed, then the next thing I would look at is the idle air control valve. The idle air control valve is the component...
Car idles and multiple trouble codes are triggered
Hi there. If this vehicle is having an idle concern, I have to ask if you may be having a stumble or stall issue when coming to a stop. If so, your vehicle may be covered under a special...
My truck shakes at traffic lights
Hi. The symptoms you describe could be a dirty or malfunctioning idle air control valve. Especially when hot, when the engine gets a leaner mixture of air and fuel, the idle air control will have a greater effect on idle...
Vehicle dies at idle while driving
It is very possible the knock sensor could cause this issue. However, before replacing the knock sensor the vehicle's timing should be checked. If the timing is retarded it will cause the vehicle to die when dropped to an idle....
Making a ticking noise when ideling
This may very well be a slight bit of excess valve train noise. Your car should have the timing belt replaced around every 60,000-70,000 miles. If it is possible that you may have put that many miles on the car...
After being driven for 20 minutes and parked for 1 hour, the car won't idle after restarting. What is a possible cause of this?
If the vehicle drives fine when cold and starts showing issues after the engine warms up, there may be a problem with the idle air control system. Another possibility is a gasket that may seal fine when the car is...
My car has a high idle when in park and doesn't shift properly
Hi there. Cold idle can be as high as 1500 RPM, but should lower to around 750 RPM for this vehicle once warmed up. This could be an air leak into the intake area of the engine; an auditory check...
My car will shake/vibrate violently when trying to start or turn off the engine after filling up the gas tank
Hello. This occurs from the purge valve not working properly. It can also be a vent valve issue, but that is not as common. These are part of the EVAP emissions system. If the purge valve is not closed when...
Idler pulley for surpentene belt fell off
Hello. If the bolt is gone then it either broke or loosened. If it simply fell out then the bracket is fine. I usually check the bracket hole to make sure that the threads are still there. If the threads...
Is it bad to drive a car with a bad throttle body??
Hey there. This may not immediately affect your car's engine. However, it will continue to cause intermittent misfires and will gradually get worse. This may also have an impact on other parts as well since the missing cylinder will still...
Engine light flashing intermittently
This may be related to a faulty or dirty mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into...

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