Couple questions

[rice]

1. When I start my engine in the morning, it idles high, like around 1500-1700rpm, but when i let it warm up for about 5+ mins, it comes down normal to 700-900rpms, i was just wondering if this is a normal procedure or not and is it something i should be concerned about?

2. I have the 7afe engine and was wondering where most of you guys shift? it is a 5-spd manual and i usually shift at 3krpm, is this a good spot to shift for daily driving for this engine? thank you

[TokyoRacer]

The high idle is normal, all cars do that to help themselves warm up faster. Once they are upto temperature they will automatically drop back down to their usual idle speed.

[VladImpaler]

To answer your questions:

1. Yes this is normal, mine and many others do it as well. It's just a quick warm-up....it will be higher in the winter when it's even colder.

2. That all depends on your own driving style, some people like to rev the RPMs up higher before they shift and others don't. I have a 89 Corolla GTS with the 4AGE and I generally try to shift around 4k RPMs....It just sounds right when I shift there for daily driving. I shift higher RPMs only when racing(which is rare), other than that it's up to you.

[REN69]

I'm with them.. both my cars rev to like 2000rpm in the winter in order to warm up the motor quicker.. its called a choke control, in older cars it was manual which meant you had to pull that lever under the dash to keep the RPMs up. In newer cars (88 and up) it became electronically controlled, which meant the computer would raise the RPMs until a certain temperature is reached.

As for shifting, I usually shift about 4000rpm when I'm doing city driving and if I'm getting on the highway or when I'm just trying to get thru slow people, I'll hit about 7300 or almost redline if I need to.

[canadianae92]

Yea, the cars computer adjusts the throttle to warm the car up, normaly the colder it is the higher the rpms will be, also a bit of advise, dont take off untill the rpms are starting to settle especially in really cold weather, itll be a lot easyer on the engine.

And before I was shifting at 3000 rpms on my 1991 corolla gt-s but it kinda lugs under 2500 and has no power so i got kind of sick of it so now i shift around 4000 rpms to get proper acceleration in and also it doesnt affect gas milage at least not very much, as for engine wear i dont really know if its hard on it, but i drive it easyer if its cold then start driving normaly when it gets warmer.

[kevin_alvarez]

yea man, as far as shifting, it sometimes depends on where you are. if you are on an uphill slope, you will probably want to rev the engine higher than normal to get that extra hp to get you up the hill. when going on a level surface or downhill, you can shift earlier and be fine.