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.
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.
Why is my car shaking and the check engine light flashing?
Usually, when the check engine light is on and the car is shaking, that means you’re dealing with an engine misfire. … An engine misfire—a problem that almost always causes an increase in hydrocarbon emissions —is one of the many reasons why the check engine light might illuminate (or start to flash).
Can you drive with an engine misfire?
An engine misfire can be caused by bad spark plugs or imbalanced air/fuel mixture. Driving with a misfire isn’t safe and can damage your engine.
Can misfires go away?
Short answer – no. Long answer – misfire usually means an ignition or improper fuel mixture problem and that can damage (at least) the catalytic converter over time.
How much does it cost to fix an engine misfire?
Misfiring of a cylinder can happen for numerous reasons. Here are the most common causes and related costs of the misfire condition: Carbon or oil-fouled sparkplugs: $100 to $300 depending on cost of plugs and labor to replace.
How far can u drive with a misfire?
You are free to drive it as far as you want. It will still run unless it is a single-cylinder engine. The power will be reduced by the percentage of the total number of cylinders that that cylinder represents. It’s 25% on a four-cylinder engine, 17% on a six-cylinder, and 12.5 percent on an eight-cylinder.
What happens if you don’t fix a misfire?
However continuing to run an engine that is misfiring can cause catastrophic damage – and the longer you put off fixing the cause of the misfire, the more damage you’ll cause to the engine. In the worst-case scenario, a continuing misfire could cause some costly problems that could effectively destroy your engine.
What happens when an engine misfires?
A misfire will cause the engine to momentarily stumble, or lose rpms, and then regain its normal engine speed. The misfire will usually reappear, either under specific operating conditions or randomly. A misfire may occur when your engine is idling, causing a rough or uneven idle.
What does a flashing engine light mean?
A blinking check engine light will pop up on your dashboard display when your engine misfires. This means that the engine is dumping unburned fuel into your vehicle’s exhaust system. This is a serious problem because it can rapidly raise the temperature of the catalytic converter.
Can low oil cause a misfire?
There is a relation between engine misfire and low oil pressure because the sudden drop of oil pressure can cause the engine not running right and the RPMs to drop low in gear causing an engine misfire.
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.