A flashing check engine light indicates a much more serious issue. Most often it means that the engine is misfiring and unburned fuel is getting into the exhaust system. This raises the temperature of the catalytic converter and can cause critical damage.
Can you drive with flashing check engine light?
The rule of thumb is that if the check engine light is flashing, you can’t keep driving the car. It’s an emergency. Often it indicates an engine misfire. If you keep driving, you will likely cause irreversible damage, mostly to the (expensive) catalytic converter.
How long can you drive with check engine light flashing?
You will need to drive for about 50 to 100 miles after clearing the car’s computer. Your car’s computer will monitor all the sensors and register the results as you drive.
It means that one or more of the emissions systems is not ready, also known as the I/M readiness test. All the systems will be tested as you drive the vehicle, and the light usually stops blinking after a few driving cycles.
How much does it cost to fix engine misfire?
there are two most common misfire causes: Carbon or oil-fouled sparkplugs can cost between $100 and $300; replacing these plugs costs between $400 to $600. You’re going to need to replace sparkplug wires, usually between $100 and $300 if they break down.
Which is worse flashing or solid check engine light?
When the car’s check engine light is flashing, do not ignore it. Your car needs repairs as soon as possible. If the Check Engine light is blinking, it’s a big warning sign and something that you want to have inspected immediately. If the light is solid, there are other things you can ask yourself to diagnose the issue.
Worn/failed spark plugs, coil packs, or spark plug wires can trigger your check engine light to come on. In today’s cars, say Firestone Complete Auto Care technicians, if a plug starts to fail then the most obvious event should be the check engine light coming on or even flashing.
Can low oil cause misfire?
When an oil filter is bad, it can reduce oil flow, which can cause an improper valve timing, which can result in a misfire. If oil flow is low for a long time, worn engine parts may result in a misfire.
Why is my engine misfiring?
An engine misfire is when one or more cylinders doesn’t produce power, and there are several possible causes, from a fouled spark plug to a clogged fuel injector or faulty oxygen sensor.
How do you fix an engine misfire?
Inspect the spark plugs for signs of damage.
Use a spark plug socket to remove the plug so you can get a good look at it. The damage you see will help you determine the cause of the misfire. If the spark plug is just old, replacing it may solve the problem. Make sure to replace and properly gap new spark plugs.