1990 tuyota camry cs

Check the gears or your going to put a new trasmisson

There should be a fluid capacity chart in your owners manual. You can also just go ahead and fill the reservoir to the proper level with coolant and keep an eye on it. If after a week you notice it low again and you still can't find the spot where the leak is, I'd try using some good old stop leak. Also, take a look at your oil to see if it has coolant in it. If so, it will have a brownish grey sludge gathering around the oil filler cap. If that's where your coolant is leaking, you may have a leaking head gasket and that would explain why you can't find a leak elsewhere..

I doubt it....It could be a totally worn out engine.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

crensant wrench sould do it it adj in size

you didn't make clear you have a automatic trasmission or manual?
if is a manual trasmission you have to look the clutch and to valves that is puting the trasmision oil pressure to move the clutch one at the end near the gear box and the second after the clutch pedal outside of the cabin imediatley after the pedal. you have to look to the oil level in the rezervoir, if you dont have the problem to bay some oil and to change completely the oil first maybe the right solution to begin with oil change first , may be is freeze from the dirties finded in the oil pipes and valves.
if you have the automatic trasmission sorry i dont know, because the problems there are more complex.

Theres no reservoir but the dip stick is behind the engine.If standing infront of the car looking at the motor in the middle of the motor back behind the intake towards the exhaust pipe you'll see a red or yellow rubber looking top.Thats it just dont mistake it for the oil dipstick..If you find one and its bihind the moyor you've found it...

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

Hi there
You should check the oil pressure sensor/wiring should be located around the oil filter area usually.
If you can't see any obvious issues than post another question with you progress and ill help you work through it...

Considering the age of the car I'm guessing failure of the main seals or piston rings. Failing piston rings would give the exhaust a blue tinge and be most noticable when reving the engine in neutral (park). It would also show up big time during an emissions test. Leaking main seals would show up as oil all over the lower parts of the engine and transmission. If your valve cover(s) are leaking it will make it difficult to determine where the oil is coming from.
I have a '90 Camry and have leaking main seals. I'm down almost two quarts each oil change if I don't stay on top of it. Not much to do in either case but rebuild the engine ($$$$$). Hope this helps.

hi sunbury
dave here
like i said earlier the fluid is added through the dipstick of course be sure to have it operating temperature first and to cycle through each gear from R through 1 slowly twice. This will ensure all of the area in the torque converter is full and give a proper reading. Remember to add the fluid slowly so it does not flood out and do not overfill.
Low tranny fluid however will not make the car stall or disable it from starting. This is a seperate problem. Let me know how starting goes next time you try or if you have a no start condition again