A car idling high can have many different causes. Most likely it is an issue with the engine but it could also be something as simple as a dirty air filter.
One of the most common causes of a high idle is a vacuum leak. The engine needs to be at a certain pressure to run correctly and a vacuum leak can cause it to lose that pressure. This can be caused by a number of things such as a cracked hose or a loose fitting.
Another common cause of a high idle is a problem with the idle air control valve. This valve controls the amount of air that flows into the engine when it is idling. If it is stuck open it will allow too much air to flow into the engine causing the engine to idle high.
If the engine is idling high it is important to figure out the cause so that it can be fixed. Otherwise it could lead to further problems down the road.
Why might a car’s idle be higher than normal?
Answer 1: A higher than normal idle can be caused by a vacuum leak dirty throttle bodyworn spark plugs or low battery voltage.
What is the most likely cause of a car’s idle being too high?
Answer 2: The most likely cause of a car’s idle being too high is a vacuum leak.
What can happen if a car idles too high?
Answer 3: If a car idles too high it can cause the engine to run lean and overheat.
Additionally the car may stall.
How do you fix a car that idles too high?
Answer 4: To fix a car that idles too high you need to find and fix the vacuum leak.
What is the second most likely cause of a car’s idle being too high?
Answer 5: The second most likely cause of a car’s idle being too high is a dirty throttle body.
How do you clean a throttle body?
Answer 6: To clean a throttle body you need to remove it and clean it with a throttle body cleaner.
What can happen if you don’t clean a throttle body?
Answer 7: If you don’t clean a throttle body it can cause the car to idle high.
Is it easy to clean a throttle body?
Answer 8: Yes it is easy to clean a throttle body.
What is the third most likely cause of a car’s idle being too high?
Answer 9: The third most likely cause of a car’s idle being too high is worn spark plugs.
How often should you replace spark plugs?
Answer 10: Spark plugs should be replaced every 20000 miles.
What can happen if you don’t replace spark plugs?
Answer 11: If you don’t replace spark plugs they can cause the car to idle high.
Are spark plugs expensive?
Answer 12: No spark plugs are not expensive.
What is the fourth most likely cause of a car’s idle being too high?
Answer 13: The fourth most likely cause of a car’s idle being too high is low battery voltage.
How do you fix a low battery voltage?
Answer 14: To fix a low battery voltage you need to charge the battery.
Is it easy to charge a battery?
Answer 15: Yes it is easy to charge a battery.
