Oil Leak spilling oil on driver's side floor inside car
Hi. We have a 1990 Toyota Corolla with automatic transmission. A couple days ago, we noticed it had a terrible smell, and there was an oil-like substance all over the driver's side floor inside the car. It actually saturated the entire floor mat. We brought it to our mechanic and he couldn't find any problem and asked if we had spilled oil ourselves inside the car. We haven't spilled anything ourselves, so we were quite puzzled when the mechanic said there is nothing he can find wrong and told us to pick it up.
There is either something really wrong, or we were vandalized by someone pouring oil in the car, but that doesn't even make since because why would someone pour oil on the floor, and intentionally miss the seat?
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When the head was removed to replace the head gasket, likely oil was 'spilled' down the sides of the engine block. If it wasn't completely cleaned, it may have accumulated on the frame cross member or other components below the engine. I would clean up the drops on the floor and watch for additional evidence for a couple of days. If they keep appearing, take your car to the shop that did the work and have them check it out for you.
My Ford had a modulator valve that malfunctioned and it caused the transmission oil to be burnt and smoked through the exhaust. Once the modulator valve was change I had no problem. Am not sure if your car has one.
Please check the following:
- Clutch cylinder upper, for manual transmission only. (Try to find the brake oil leakage of upper clutch cylinder from the inside of car, exactly in front of clutch pedal, where the push rod enters into the clutch cylinder).
- Power steering seal, upper.
- Speed meter cable seal at transmission side. (With mechanical wire system only)
The fact that you are adding a quart of oil to your car doesn't mean that car have a leak, most of the time engines are leaking oil is noticeable, on the side of the engine block or black spot on parking lot. Engines also consume oil after certain amount of miles depending on models. I don't think your car acting up have anything to do with the quart of oil you are adding to your car once a month. Please specify what exactly is your car doing when you say; is acting up, so we can help you out to solve that issue.
There are two types of transmissions in 1991 Toyota Corolla. Manual Transmission and Automatic Transmission.
1. Manual Transmission:
The transmission oil is checked through a level bolt which is provided to the left CV joint side in the middle of transmission. To check the oil level, park the car on a level floor, remove the level bolt with 22 mm or 24 mm spanner. If the oil starts coming out of this hole the oil level is considered OK. If not, top up the oil till it starts coming out and tighten the bolt. The recommended manual transmission oil grade is 75W/ 90W and total capacity is 2.4 Litres.
2. Automatic Transmission:
Warm up the engine, park the car on level floor, pull up the hand brake, gear lever stick in P, keep the engine start, let the radiator fan come on, take the auto-transmission stick out, wipe it with a clean dust free cloth, insert it in, again take it out, keep the stick in horizontal position and check the oil level. At operating temperature the auto-transmission oil level should be at upper level (Hot). If not, add oil to mach the mark. The recommended auto-transmission oil is Automatic Transmission Fluid (ATF) Dexron II, and total (drain and refill) capacity is 1.4 Litres.
Sounds like you need to get your transmission serviced as the darkened color is a sign of deteroration. As for oil to somehow make it into the transmission you would need one serious oil leak and the grommet around the tranmission dipstick would have to be pretty much gone for oil to somehow make it into the housing. Needless to say I've never seen it happen.
is it your oil line going up to the oil guage if it's a manual guage it will have a small plastic line running to it otherwise an electric 1 wouldn't be leaking . if it's not that then mayby transmission fluid coming up the speedo cable could be a 20 cent o ring , if your lucky . that's all i can see leaking oil on that car
they should have suggested changing tranny screen and filter if tranny isnt maintained every 20,000to 30,000 you end up with gray like particles from normal wear wich get caught in the screen and valve body wich leads to erractic shifting valve body problems eventually tranny replacement number 1 rule oil changes on motor and screen and filter on tranny prevents premature wear longer life to two major key factors