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Hi Guys,
I have a 2004 Toyota Corolla Runx Z. Which has the VVTL-I Engine (2ZZ-GE) The car has 81,000km on it so not much at all. I had the transmission flushed at 80,000km by Toyota after I changed the oil, filter and some other fluids. I just had a question to run past you guys, but ever since I have owned the car, when the car is stone cold and you drive off the Automatic transmission can sometimes be quite rough. Once the cars has warmed up there is no trouble at all, its smooth and no problems. I am not sure if this is normal but it just feels a bit more than abnormal when cold.Hopefully someone has some pointers here.
Cheers
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[quote=”D.Hill” post=68810]Hi Guys,
I have a 2004 Toyota Corolla Runx Z. Which has the VVTL-I Engine (2ZZ-GE) The car has 81,000km on it so not much at all. I had the transmission flushed at 80,000km by Toyota after I changed the oil, filter and some other fluids. I just had a question to run past you guys, but ever since I have owned the car, when the car is stone cold and you drive off the Automatic transmission can sometimes be quite rough. Once the cars has warmed up there is no trouble at all, its smooth and no problems. I am not sure if this is normal but it just feels a bit more than abnormal when cold.Hopefully someone has some pointers here.
Cheers[/quote]
Describe what you mean by rough? I don’t know if you know this, but these Transmissions will not go into overdrive (4th gear) until they are warmed up. So when you start it up cold and jump right on the highway, you will not get overdrive until it has reached operating temperature.
-Karl
Hey There Karl,
I haven’t actually noticed that yet, as where I live I am always in traffic until it warms up ha ha. But when I take off on cold it shifts pretty harsh sometimes. This all goes away once the car is fully warm, but it just doesn’t feel normal to me. If its just the way it is then thats fine.[quote=”D.Hill” post=68816]Hey There Karl,
I haven’t actually noticed that yet, as where I live I am always in traffic until it warms up ha ha. But when I take off on cold it shifts pretty harsh sometimes. This all goes away once the car is fully warm, but it just doesn’t feel normal to me. If its just the way it is then thats fine.[/quote]What gears give you rough shifts, 1-2, 2-3? Does it surge when you put it in drive from park? What are your RPMs when this is occurring?
-Karl
Hi Karl, Its mostly 1-2 and a little 2-3. Car doesn’t surge when put in any gear, but the RPM is normal for a cold start. Mine is sitting at 1000-1100rpm when cold. Although some days when its cold and you put it in drive you can feel a very faint engagement, but nothing serious. But for the harsh shifts in the cold, The RPMs when taking off are between 2800-3500rpm.
It sounds like an internal issue with either the accumulator control valve or the B2 (second brake accumulator). This will need to be addressed by a shop if you want to ID and repair the issue.
All you can do at this point is ensure you have the correct amount of trans fluid in the system.
-Karl
Thank you for your help Karl. Yes I have checked the fluid and its spot on for where it should be. So is this going to be a major fix? or will it be fine to keep driving like that. Cheers
[quote=”D.Hill” post=68822]Thank you for your help Karl. Yes I have checked the fluid and its spot on for where it should be. So is this going to be a major fix? or will it be fine to keep driving like that. Cheers[/quote]
It is difficult to say if it will be a major fix. You have to have a good transmission tech look at it. In the meantime, I would wait until the car reaches operating temperature to drive it.
Karl
Quick update, its not only the cold that this is happening in. You can feel it slightly when its warmed up, but its definitely worse in the cold. Could this just be as simple as a shift solenoid? The fluid is perfect in color and is at the correct level.
What I was reading on some Toyota forums was some people
are saying the the coolant temp has to come up to 140f before
the trans will shift normal.That is interesting if its to do with coolant, as I just noticed an air pocket in the cooling system yesterday. When you started the car in the cold you could hear coolant sloshing around behind the dash, so I bled it out and replaced the radiator cap as it looked like it was leaking around it and drying. So maybe it was affecting the sensor. I will drive it and see how it goes.
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