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This is an oil PRESSURE issue, not oil level.
It is likely that when you stop, and the engine returns to idle, the oil pump is not creating enough pressure to push oil up to the top of the engine and lubricate the valve assembly.
I hate being the bearer of bad news, but the plastic impellers in most modern oil pumps do fail over time, especially if they've been disturbed by the work associated with an engine rebuild. Or, it could be that it is not sitting right on the pickup and feed tubes, and they are being blocked and causing pickup problems at low RPMs. The solution will involved dropping the pan to figure out what's going on with the pump.
I think your sensor may be affective. The same thing happens to my sebring and it has been like that forever. You can check the oil pressure sensor and see if it needs replaced.
The oil pressure sensor is located on the back of the engine, behind a heat shield. you will need to be able to work from under the vehicle to access it.
Get it scanned for the check engine light, (mil light), as for the oil light, thats normal due to engine not running and making no oil pressure. was this a sudden stall, with no engine surging, then I suppect a failed cam or crank sensor. if it kind of stalled with engine surge and hesatation, I suspect fuel related, possible fuel pump. 2.4L, 2.7L engine have same sensor issues and ideas. if you need more info, just reply back with the mil code, I will walk you through this problem.
GOOD LUCK, RDJRP.
Hi,
Most of mercury cars have an oil pressure sensor that is tied into the fuel system that will shut off fuel pump if oil pressure is low. Hope this should help you.
I just had the same problem on an 04 Sebring with a 2.7L V6. The oil pressure sensor (switch) was the culprit. Several web references that I checked mention that the original sensors have issues with oil leakage, which eventually causes it to fail. The sensor itself is fairly inexpensive..about $15. It is located on the back side of the engine and is only accessible from under the car. Look for a small heat shield held on by three 15mm bolts. It is just to the driver's side of where the exhaust system goes behind the engine. The oil sensor is located under this shield. You will need a 1 1/4" deep socket to remove it. When installing the new sensor, be sure to use a torque wrench. It needs to be tightened to 14 ft/lb. Using more force than that, and you run the risk of damaging the sensor.
If this doesn't resolve the problem, you may have a problem with the oil pump either being defective or blocked with sludge. As one of the other gurus on here mentioned, this engine does have a known problem with sludge buildup. I hope this helps! Good luck!
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