I was driving and the rpm's decreased and the speed wouldn't go over 20. later in the day the engine light came on. I took it for an oil change a few days before but doubt that has anything to do w/ it. Since the problem I took it to a shop and they said the transmission fluid was low and added to it. they also said after adding they noticed the fluid was decreasing but they don't see a leak.

P0332 = Crankshaft position (CKP) sensor/engine speed (RPM) sensor - no signal.
The sensor monitoring the RPM's of the engine isn't communicating with the vehicle's ECU, (brain). This could explain the difficulty starting the engine.

pls. drive

If you lost power steering and all those lights came on, then what you experienced was the engine stalling.
If the car runs well aside from this single incident, then I wouldn't suggest that anything is necessarily wrong. You may have accidentally stalled it perhaps?

I wouldn't have any problem replacing the oil pressure switch to see if that takes care of the issue. Many time it will.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Have you checked your oil and fluid levels in the engine and transmisson.
if it's a manual could the clutch be worn out causing the high rpm and thrust bearing noise in the clutch.

could be crankshaft sensor or camshaft sensor. see if you can pull the code from the ECM, should still be in the computer's memory.

Check oil level. Make sure you're using the right weight oil. If those are good, you've either got a bad oil pressure sensor or pressure problems with the pump or worn engine bearings. Could be a sitcking pressure relief valve in the pump. But also could be a worn engine

you need to change the transmission oil.After doing that and the problem is still there then check the transmission oil cooler is not blocked.Good luck.

Assuming you meant "RPMs Increased as speed decreased." This is usually referred to as a "slipping" condition in an automatic transmission. It's much like when your clutch wears out and it starts to slip. THe engine revs up and you go slower! Especially driving up hills since the load is greater on the powerplant. You should be darn sure you are full of Trans. fluid. Check it properly like your manual describes. If you are in the operating range of fliud level, your transmission is likely going out. If this sounds like your problem, take the car to a qualified service center, not the local quickie oil-change outfit, for an expert opinion.

you might try and change the pcv valve, my car hand a similar problem in the summer and i never changed it. the pressure blew my cam seal and i was leaking oil like crazy. i dont know if it will fix it but they are cheap. i would give it a try.