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When starting my 1MZ V6 Camry after 5 hours of sitting in a parking lot on a 73 degree weather day, the engine temp needle is below the Cold mark and if I drive the car before the engine temperature reaches the 1/2 way mark, I notice the car's RPM will be over 1,000 mark and the transmission not run smoothly, until I keep driving for another 3 minutes. I sometimes let it warm up [between C and H] in the parking lot before driving off and the RPM will be below 1,000 mark. Both situations are using O/D. Will I use more fuel [not to mention create more carbon fouling in my intake] if sitting in the parking lot making the car warm up, OR driving off before it fully warms up ?
I had Dealer change oil 5W30 and filter a month ago.
On Toyotas they will not shift into o/d until the car reaches a certain temperature. Is this what you are talking about. I am not sure what the actual temp is but my 94 camry , 02 Sienna and former 97 Corolla all do it. And every Toyota I worked on when I was a mechanic did it. It has nothing to do with the outside temperature it is the engine temperature. I even think there is something inthe owners manual aobut it. You may want to look in there also.
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Chris
PLEASE DO NOT GET RID OF THE OLD TN AS WE KNOW IT.
You should always warm up your engine. The Camry doesn't waste that much gas when it is idling. I never start driving before my RPMs go down to about 800 or so.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
On Toyotas they will not shift into o/d until the car reaches a certain temperature. Is this what you are talking about. I am not sure what the actual temp is but my 94 camry , 02 Sienna and former 97 Corolla all do it. And every Toyota I worked on when I was a mechanic did it. It has nothing to do with the outside temperature it is the engine temperature. I even think there is something inthe owners manual aobut it. You may want to look in there also.
Anyone know why this is? I've always wondered about this.
qprint- You will definitely waste more gas idling than driving at slightly higher RPM's. I just let the engine warm up for about 10-30 seconds (depending on the weather) and then go. As they say, you get 0 miles per gallon when you're idling.
qprint- You will definitely waste more gas idling than driving at slightly higher RPM's. I just let the engine warm up for about 10-30 seconds (depending on the weather) and then go. As they say, you get 0 miles per gallon when you're idling.
Why would that make any sense? The engine isn't working nearly as hard while idling than when driving. On top of that, there are more moving parts while the accelerator is depressed as opposed to standing idle.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
He's absolutely right you know! The reason you'll get 0 mpg when idling is that you ain't moving. You can sit there until your juice runs out but you won't have clocked any mileage
He's absolutely right you know! The reason you'll get 0 mpg when idling is that you ain't moving. You can sit there until your juice runs out but you won't have clocked any mileage
Thats not what I meant... I wasn't talking about the 0 mpg... I was talking about the statement about how you waste more gas idling than driving at higher rpms. It makes no sense. All of the moving parts under the hood are moving slower, if moving at all while idling.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
Yes but normally when idling, you aren't moving! Am I missing something here? Unless you are talking about putting the car in neutral and coasting fown the road, the 0 mpg applies.
lol no no no.. I never said that you don't use any gas at all. I'm just saying that what he said about how you use MORE gas idling than when you do driving makes no sense.
lol and the 0 mpg thing has nothing to do with it. All that means is that you're just wasting gas and not moving, yes. But like I said, its not possible to waste more gas idling than when you're driving.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
You should always warm up your engine. The Camry doesn't waste that much gas when it is idling. I never start driving before my RPMs go down to about 800 or so.
Try reading your owners manual again. It specifically states to not spend any significant amount of time idling to warm up the car. The motor will heat up faster under load and you will get overall better mileage/efficiency by driving away nearly immediatly after starting the car. Just be easy on it until the gauge says 'warm'.
-Charlie
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1989 Camry Alltrac LE 3S-GTE 5spd - SV25/ST205 hybrid
1990 Camry 3S-GTE 5spd - parted out / junked
1990 Camry DX 3S-FE 5spd - The original white90dx; gone but not forgotten
You should always warm up your engine. The Camry doesn't waste that much gas when it is idling. I never start driving before my RPMs go down to about 800 or so.
i normally get in the car, start the engine, buckle up, step on clutch, shift in 1st gear, give a little gas and drive, the engine will be warmed by the time i get to high way on ramp 60 seconds later, been driving like this for last 50k miles all season long, my car still runs great. is there any real evdidence warming up is good for engine besides waste gas idling and polluting air?
Last edited by bronzemaxell; 06-02-2005 at 08:15 PM.
Ok, maybe I should have mentioned this more clearly. Gas wasted from the slightly higher rpm's as a result of not waiting for your engine to warm up won't be as much as the gas you waste by letting your engine completely warm up first.
Say you don't let your engine warm up, and your average rpm is 2000, but if you did let your engine warm up, it's 1500. I'm just making these numbers up, btw. The gas that's wasted by initially running 500 rpm higher won't be as much as the gas you waste by letting the engine warm up.
Ok, maybe I should have mentioned this more clearly. Gas wasted from the slightly higher rpm's as a result of not waiting for your engine to warm up won't be as much as the gas you waste by letting your engine completely warm up first.
Say you don't let your engine warm up, and your average rpm is 2000, but if you did let your engine warm up, it's 1500. I'm just making these numbers up, btw. The gas that's wasted by initially running 500 rpm higher won't be as much as the gas you waste by letting the engine warm up.
hmm, very interesting,
but through my observation, i shift gear according to vehicle speed, for example, 1st gear to move the car forward from stop, once the car start moving at let's say 5 mile or 10 miles per hour, then i shift to 2nd gear, and once i reach 20 to 25mph, then i shift to 3rd gear, and so on, in general, i shift gear when rpm reach between 2k to 2.5k rpm
i really don't see how the rpm is higher if the engine is cold in my case.
probably the higher rpm when engine is cold is for auto transmission, warming up engine quicker and also prevent it going to o/d
By average, I meant like for the first minute or so of driving as the engine warms up, but even for a manual transmission, I'd think that your rpm's are initially higher on a cold start.
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Car runs well after it warms up
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