The check engine light comes on for numerous faults found by the computer. You will have to have the code pulled to find out why it is flashing. Most auto parts stores will do this at no cost.
A PCV valve is for positive crankcase ventilation. It is to keep crankcase pressure from building up in the engine. If it does it can cause seal leakage, air filter contamination and engine blowby.
it is a defective speed sensor.
Other than an obvious external leak that you can easily see, you may have a blown head gasket.
You have a bad Vss Sensor.............. The vehicle speed sensor.
constantly running your car with low fuel will burn out your fuel pump
Short in the wiring or inside one of the plugs.
The thermostat is just under the throttle assembly at the front of the engine. You will need to remove a black plastic shield in order to access it. Is it difficult to remove and replace? Should that job cost $100? Would a failing thermostat cause the radiator to crack,leak and overheat on my 1991 Acura?
an airbag warning lite (srs)can be cuased either from a censor or a major problem
check the brake light switch behind the brake pedal under the dash.
you might have a bad Flasher relay.
I am ten years old and I do blink cause it helps my eyes.
My 02 liberty check engine light has blinked in the past. It was because my battery needed to be replaced. Count the number of times it blinks and search for that blink pattern online for better information.