Why is my check engine light on when nothing is wrong?
Normally, the appearance of a check engine light indicates a problem somewhere in your vehicle, but nothing seems amiss. Your car is still running at its best and there seems to be absolutely nothing wrong. It doesn’t have to take a mechanical issue in order for this light to appear.
Can check engine light mean tune up?
If there’s a warning light on, it’s probably an indication that you should have gotten a tune-up a while ago, but more importantly, it’s a reason to bring your car into an auto repair center immediately. The problem here is that most people don’t take their check engine lights very seriously.
What sensors can cause check engine light?
Oxygen sensors are a common cause of “check engine” lights. This sensor is located in the emission control system of your car, and is standard on all vehicles manufactured after 1980. The oxygen sensors are used to ensure that your engine is burning the correct amount of fuel, and running at peak performance.
What can trigger the check engine light?
Here’s a look at six common reasons that a check engine light comes on.
- Faulty Mass Air Flow Sensor.
- Failing Catalytic Converter.
- Faulty Oxygen Sensor.
- Bad Battery or Charging System.
- Failing Ignition Coil.
- Loose/Missing Gas Cap.
How do I know if my check engine light is serious?
Check engine lights come in orange, yellow or amber, depending on the manufacturer. If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly overheat the catalytic converter.
How urgent is the check engine light?
Unlike a Temperature or Oil Pressure light, a Check Engine light is usually not an urgent, “Stop right now or you may cause permanent damage!” type of situation, unless it is flashing. If your vehicle’s gas cap was loose, it may require some driving and an overnight “parked” period before the light will reset itself.
When does the warning light come on on a Porsche 993?
This warning light comes on when the engine oil drops below a safe level. Always make sure to check the oil dipstick as part of your weekly routine, specially if any extended driving stints are in the horizon. The 993 generation Porsche is known to go through motor oil quite fast.
How does OBD 2 work on Porsche 993?
As the first 911 equipped with On Board Diagnostics 2 (OBD II), the Porsche 993 monitors many components to ensure proper operation of the vehicle. Many engine-related problems can be detected by the on-board computer and illuminate the check engine light to alert the owner of a problem.
When to check the oil in a Porsche 993?
Always make sure to check the oil dipstick as part of your weekly routine, specially if any extended driving stints are in the horizon. The 993 generation Porsche is known to go through motor oil quite fast. If indeed the oil is below what it should be, replenish with the appropriate oil; if not, then have it serviced immediately.
Where is the CHT sensor on a Porsche 993?
The CHT sensor is located on cylinder number 3. Resistance can be checked at the sensor plug with a digital multi-meter and should vary depending on engine temperature.