* Low Oil Pressure: This is the most likely culprit. Even if you have enough oil in the engine, the pressure might be too low. This could be due to:
* Failing oil pump: The pump might be wearing out and not circulating oil effectively.
* Worn bearings: Worn engine bearings create gaps, allowing oil to leak out and reducing pressure. This is a serious issue.
* Clogged oil filter or pickup tube: A blocked filter or pickup tube prevents oil from flowing freely.
* Thick oil: Using oil that's too thick (incorrect viscosity for the temperature) can restrict flow. Check your owner's manual for the recommended oil weight.
* Faulty Oil Pressure Sensor: The sensor itself might be malfunctioning and giving a false reading. This is less likely if the light stays on consistently.
* Oil Cooler Issues (less likely): A leak or blockage in the oil cooler could affect pressure.
What to do immediately:
1. Do NOT drive the car further. Continuing to drive with low oil pressure can cause catastrophic engine damage.
2. Check the oil level again. Make absolutely sure you have the correct amount of oil. Use the dipstick and check it when the engine is off and cold.
3. Check the oil pressure gauge (if equipped): Some PT Cruisers have an oil pressure gauge, not just a warning light. A low reading on the gauge confirms the problem.
Next steps:
1. Get it towed to a mechanic. Don't attempt to diagnose or fix this yourself unless you have significant mechanical experience. Low oil pressure is a serious problem that needs professional attention.
2. Describe the issue to the mechanic. Be sure to mention that the light comes on when stopped and that you have checked the oil level.
Ignoring this warning light could lead to a very expensive engine rebuild or replacement. It's crucial to address this promptly.
