Q: Check engine light has been on for a couple weeks starting blinking 2 days ago

asked by on October 20, 2017

Check engine light has been on for a couple weeks then one day i start it up and while driving it had a little hesitation then the light starting blinking i drove 10 miles home turn it off check my fluids then start it again and it was running rough felt like engine was shaking sounds like a knock somewhere upon looking and listening it sounds like its coming from passengers side of motor if u idle the car up the noise stops

My car has 293407 miles.
My car has an automatic transmission.

Check Engine Light is on Inspection $94.99 - $114.99 Get a Quote

When the check engine light is on, it means that the ECU has detected a malfunction and stored a trouble code to tell you what it is. When the check engine light is blinking, it means that the malfunction is bad enough that continuing to drive the car can cause damage. You need to stop driving the car and have the codes read so you can decide what to do about it. If you contact YourMechanic. they can send a technician to your home or office to read the codes stored in your ECU and tell you what can be done about it.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

What does the color of the engine start/stop switch mean?
Cars equipped with the smart key system and a push-button start have a colored light on the start/stop button. This light can provide you with a lot of information about the condition of the system itself. Here’s a quick rundown:...
my car wont go over 30mph if i press the gas it just revs up, so does this mean my transmission is gone out?
Hello there, thank you for asking about your 2002 Pontiac Firebird. It sounds like your transmission is slipping. It does not mean it needs replaced. You will need to have the transmission checked and fixed for leaks and refill transmission...
Can you drive with only 2 lug nuts instead of 3?
Hi thanks for your question. My advice is that this is very dangerous and the car should not be driven with only 2 lug nuts. If any of the remaining two were to also snap, this would cause catastrophic damage...
Crankshaft pulley is wobbling after timing belt change, how can I correct this?
Hi there. The wobble in the crankshaft pulley/harmonic balancer may have been there prior to removal and wasn't noticed. There is no keyway, so missing the keyway is ruled out as a possibility. The harmonic balancer may have been bent...
HOT OIL TRANSMISSION ISSUE
It sounds to me like you are having an issue with the cooling system for your transmission fluid. The transmission fluid is either cooled by the radiator or a separate transmission cooler (https://www.yourmechanic.com/services/radiator-replacement). The fluid is transferred from the transmission...
Smelling gas and bad gas mileage
There are a number of things that can cause poor fuel mileage. A faulty camshaft position sensor (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement) is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and fuel...
My window on my passenger side won't roll down and the lock button doesn't lock the doors.
Hello, thank you for writing in. Your issue is most likely a switch. The window motor would not effect the door lock functions. The only true way to know is to test the power available to the switch and see...
Where is the fuel reset button on my Caddy? 1995 Cadillac Deville
Hello - your Deville does not have a fuel cutoff reset button. If you can't hear the fuel pump running with the key in the "On" or "Start" position, check the fuel pump fuses, then check the fuel pump relay...
Limp Mode
There are a number of things that may cause the vehicle to go into limp mode such as faulty transmission control components or various engine control components. Typically, when this happens the check engine light will come on triggering some...

Related articles

P0385 OBD-II Trouble Code: Crankshaft Position Sensor B Circuit Malfunction
P0385 means the crankshaft position sensor B circuit is malfunctioning
P0533 OBD-II Trouble Code: A/C Refrigerant Pressure Sensor Circuit High Input
P0533 means the A/C refrigerant pressure is too high to safely function often due to inoperative cooling fans or too little or too much refrigerant.
C1095 OBD-II Trouble Code: ABS Hydraulic Pump Motor Circuit Failure
Trouble code C1095 means the ABS hydraulic pump motor circuit has failed, often because of a damaged wheel speed sensor or wheel bearings.