2001 chrysler sebring oil pressure light comes on when the car is stopped at red lights while moving the light never comes on .Another question i have is why does the air conditioner sound so loud outside of the car

The oil pressure light is a serious problem...this needs to be looked at right away, or you face a seized engine (one that no longer moves). It sounds like the oil pump will need to be replaced. The reason the light goes out while moving, is that the engine is running faster, so the worn-out pump is able to create enough pressure to shut the light off. Don't hesitate to get this fixed ASAP! As for the A/C, it could be due to a lack of oil in the system (due to a leak) or a worn out drive clutch or belt.

Here is how I fixed the low oil pressure light problem without using any parts, only the labor to remove the oil pressure sensor is needed. I have an 02 seabring convertible 2.7L engine and I was having the same problem with my oil light coming on at an idle. I bought a new sensor replaced the old one and had the same problem. I than got a test kit and tested my oil pressure. It was very good, never lower than 11 PSI hot at an idle. I was reading about the wire connector modification, but I had an 02 and this mod came out in 98, surely Chrysler incorporated this mod on its newer vehicles. Well after checking more they did not and this is what turned me off on Chrysler products forever. For a manufacturer to produce a vehicle with a known defect and a modification fix and not incorporated this modification on its newer vehicles is inexcusable. After reading that the modification was to stop pressure build up in the sensor housing I decided to make a pressure release hole in the sensor housing. I took my old oil pressure sensor and using a 1/8 inch bit I drilled a small hole at the base of the plastic sensor tower. I put the old sensor in and drove for a week, no problem with my light coming on. To test further I took the new oil pressure sensor I bought and drilled a hole in it. Put it in and I've been driving for months and no problem with my oil pressure light coming on at all now.

Try using a slightly thicker oil if you live in a warmer area..I tried that on my car which is the same as yours and has the same problem. It did help or an oil thickener you can get from any auto part store. the oil pump is in the engine so I don't think it can be replaced on its own.

I have the same problem with mine. A more serious issue with my car though is that it takes a few seconds to start. I took it to a mechanic and they told me I need a new fuel pump module assembly... and yes, it can be replaced on it's own. They quoted me a ridiculous price of $358 for just the part... I found it online for $150 including shipping and tax. And just so you know, the Chrysler V6 2.7 is notorious for complete engine failure. It's a baaaad apple... I'm selling mine as soon as I fix the fuel pump.