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Old 03-22-2009, 09:41 AM   #1 (permalink)
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Gen5 Please delete

[gen5 - V6] outside/ garage temperature between 3-10 Celsius (37-50 F).

Engine starts and temp gauge is below C. it takes about 3-4 minutes for the temp gauge to reach the first line of C.

if i do not let it warm up and drive immediately in Gear 'D", the car will have a high rev at low speed, like at 3000rpm and speed 60km/hr (as if i was in 2nd gear).

once the temp gets to first/ second line of C, then engine runs normal rev/ speed.

is this normal?

not sure if this has anything to do with it. but not long ago the car had a coolant flush. The coolant used was Toyota Super Long life 65/35 premix (pink).

do you think this might be caused by not having a high enough ratio of coolant mix (due to the premix coolant was likely mixed with leftover water from the flush).

thanx.
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Last edited by icqboy51; 03-25-2009 at 12:57 AM. Reason: answered
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Old 03-22-2009, 10:46 AM   #2 (permalink)
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[gen5 - V6] outside/ garage temperature between 3-10 Celsius (37-50 F).

Engine starts and temp gauge is below C. it takes about 3-4 minutes for the temp gauge to reach the first line of C.

if i do not let it warm up and drive immediately in Gear 'D", the car will have a high rev at low speed, like at 3000rpm and speed 60km/hr (as if i was in 2nd gear).

once the temp gets to first/ second line of C, then engine runs normal rev/ speed.

is this normal?

not sure if this has anything to do with it. but not long ago the car had a coolant flush. The coolant used was Toyota Super Long life 65/35 premix (pink).

do you think this might be caused by not having a high enough ratio of coolant mix (due to the premix coolant was likely mixed with leftover water from the flush).

thanx.
What year is your car? It's probably not due to the coolant but I was told from the dealer that there are two types of coolant for Toyota's Long Life and Super Long Life. Super Long Life is for 2006 and up. Also, according to my manual, do not go over 60% mix, so 60/40 would be max.

My car does rev higher before it is warm as well (when driving), but I will have to note how high.

Did this just recently happen or this is the first time you noticed it???
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Old 03-22-2009, 02:41 PM   #3 (permalink)
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^ 2003 V6.

well as noted from dealer and also from here that both coolant works fine for my 2003 (ie. new super long life - pink is backward compatible with long life - red). as long as you do a flush of the red stuff before putting in the pink super long life, which is what i did.

it just more apparent in recent 2-4 months. but this could be due to winter up in Canada. but still sometime the temperature is warmer like 10 Celsius but this issue would still happen.
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Old 03-22-2009, 09:47 PM   #4 (permalink)
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The coolant mix is just fine. Don't mess with it. Neither does it have anything to do with the engine warming up. What you describe is not particularly abnormal. I'm guessing the car is used but new to you. There is a chance that the thermostat is not closing completely, but better that than not opening fully. On some AT models, perhaps this one as well, there are temp sensors that modify the shift points when the transmission is cold. If things don't change, don't lose any sleep over this.
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Old 03-23-2009, 12:13 AM   #5 (permalink)
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^ 2003 V6.

well as noted from dealer and also from here that both coolant works fine for my 2003 (ie. new super long life - pink is backward compatible with long life - red). as long as you do a flush of the red stuff before putting in the pink super long life, which is what i did.

it just more apparent in recent 2-4 months. but this could be due to winter up in Canada. but still sometime the temperature is warmer like 10 Celsius but this issue would still happen.
OK, I wonder if you live in Vancouver BC because that is the same climate as me, about 10 c. When my car is cold it is revving maybe at 2000 rpm when going at about 60 KM. 3000 is a little high. My car is about 500 rpm higher than normal when cold, I would say, but after about 2 km's of driving it's back to normal. You may want to get it checked out, must be a sensor thing, I'm guessing.
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Old 03-23-2009, 12:45 AM   #6 (permalink)
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OK, I wonder if you live in Vancouver BC because that is the same climate as me, about 10 c. When my car is cold it is revving maybe at 2000 rpm when going at about 60 KM. 3000 is a little high. My car is about 500 rpm higher than normal when cold, I would say, but after about 2 km's of driving it's back to normal. You may want to get it checked out, must be a sensor thing, I'm guessing.
do you get this too?

like when temp is around 5-10 Celsius, you drive the car immediately after starting the car? you step on the gas, but it feels like as if the car is strained/ limited to high rev and up to 60km/hr?

not sure if exactly 3000rpm, i might need to re-check on the rev next time, may be a little lower.
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Old 03-23-2009, 01:00 AM   #7 (permalink)
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do you get this too?

like when temp is around 5-10 Celsius, you drive the car immediately after starting the car? you step on the gas, but it feels like as if the car is strained/ limited to high rev and up to 60km/hr?

not sure if exactly 3000rpm, i might need to re-check on the rev next time, may be a little lower.
Put it this way, when the engine is cold, my car will rev higher (about 500 rpm's more) and then I drive about 1-2 km, it goes away. But certainly not 3000 rpm. So if I'm going around 50 km/h, it would be about 2000 rpm or so. Once warmed up, it drops to about 1500 rpm. Only takes about 1-2 km's of driving. If it's up to 3000 rpm, you have an issue.
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Old 03-23-2009, 09:44 AM   #8 (permalink)
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^ i am not sure if its 3000rpm. but yes for sure rev higher.

but if i try to step on the gas more to increase the speed, like 60km/hr+ with the cold engine, then it will rev higher and higher

Until the engine is warm (temp gauge reaches the first line of C), then its runs normally.
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Old 03-23-2009, 10:26 AM   #9 (permalink)
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What you've described so far all sounds pretty normal. When cold the engine will idle faster than normal to prevent stalling and to warm up faster. During this time the transmission shift points may also be higher than normal so the engine will rev higher. Best to just start driving but avoid any hard acceleration until the engine is at normal operating temperature.

If there was any water left in the cooling system that mixed with the new pre-mixed coolant it shoudn't be of any concern unless you travel to somewhere with very low temperatures (say around -40). In that case it'd be good to have the coolant checked to be sure the mix is adequate to avoid any freezing. But it's probably ok in any event - and has nothing to do with the engine and transmission behavior you're seeing during warmup.
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