Over Revving On Corolla

[futchoi]

Hiya all,

Just a quick question abt the 05 model toyota corolla. I have just picked mine up and noticed that when i go to change gears and lift off the throttle the engine still revs for a short period so it sounds like i am still pressing down on the accelerator when i engage the clutch n change gears. I was wondering if this is normal for the 05 model corolla?

Any help is much appreciated.

[KidKoala]

Doesnt sound right to me ;) I'd take it straight back to where you bought it from.

[Roxtar]

the 05 corolla with the 1zz-fe motor (non XRS models) has a drive-by-wire system instead of a normal mechanical throttle cable. this means that a sensor in your gas pedal tells a computer how much to open the throttle. your problem sounds like maybe a problem with this system. the system might not be seeing you release the throttle for a fraction of a second.

try this as a test: with the car running but at a stand still... rev the motor to where it would be when you shift. hold it there for a second then take your foot off the gas completely. if all is well, you should immediately drop revolutions with no delay and no spike in the opposite direction.

it could just be that when you're shifting, you let out the clutch a fraction of a second before you completely let off the throttle.

[Super7]

My Corolla is the same, so was the one that i test drove

Take a look at this

[futchoi]

Thanks for all the replies. Its much appreciated. Think i will still take the car back to Toyota to see if i get the same response as everyone else seems to be getting or just on the off chance there maybe a fix for it. Anyhow it is annoying though but if nothing is wrong with the car then i think i will just put up with it for now.

[ColinM]

There are numerous other threads on this subject in the forum. It is perfectly normal and all the new Corolla's do it, including mine. Apparently it is intentional and something to do with burning excess fuel and emission levels.

You'll soon get used to it and not notice it happening - after 6 months and 6,000 miles I certainly don't notice it now.

[sigrid]

I didnt think I would ever get used to it, and now I hardly notice it at all, I drove a car the other day that didnt do it and it felt really weird because it didnt hold the revs for a second. So give it time and enjoy the car :)

[dmart]

We can try to get used to it but many will never do so. We've all been had. Future models will undoubtedly be corrected. Other cars meet the Stage IV emissions standards without these tricks - which by he way includes up to 15 seconds revving almost to 3000rpm a cold startup.

[dvdmeister]

15 seconds at 3000rpm! Glad mine doesnt do that - you get a nice kick when the engine 'catches' as you turn the key, but that just makes it easy to start without having to use the accelerator peddle. After that it immediately settles to about 1200rpm idle depending on the temperature and then gradually drops down to 600-700rpm!

[stuartr]

Just to let folks know my Dad's 05 Toyota corolla does the 3000 rpm thing on 'cold start'.Not actually a cold start as such but if the vehicle is left over night i.e for more than say 8 hrs it idles for 30 secs or so at 3000 ish.This is usually in the morning when he gets the car out of the garage.It doesn't re occur during the day.Therefore it does seem to be a 'time from last start' dependant issue not a temperature issue.He's not impressed either.Only done 5000 miles so far and been told the modern engine ,modern oil , not a problem emissions,it'll get better, thing fob off.Even got a 'why your car revs during gear change ' explanation from Toyota even though this was not the issue he raised!

[Bos]

This topic has been going on for a long time now. .

My 55 plate rolla revs to about 1,500-1,800 revs when first started from cold, but within a second or two drops to about 1,200 and then very quickly drops to about 600 ( about 10/15 seconds ).

I have found that by easing off the throttle and then depressing the clutch about 0.5 seconds later that the revs. only rise by about 100. This method woks for me, but the car has never reve'd to 3,000 on cold start up ;) . Perhaps you do have some problem, I would go straight back to the dealer who sold you the car.

[stuartr]

Thanks

If there's anyone out there who has had this issue resolved by toyota let us know.

i'll see how Dad get's on with his car.

Cheers

stu

Just to let folks know my Dad's 05 Toyota corolla does the 3000 rpm thing on 'cold start'.Not actually a cold start as such but if the vehicle is left over night i.e for more than say 8 hrs it idles for 30 secs or so at 3000 ish.This is usually in the morning when he gets the car out of the garage.It doesn't re occur during the day.Therefore it does seem to be a 'time from last start' dependant issue not a temperature issue.He's not impressed either.Only done 5000 miles so far and been told the modern engine ,modern oil , not a problem emissions,it'll get better, thing fob off.Even got a 'why your car revs during gear change ' explanation from Toyota even though this was not the issue he raised!

[cutz2000]

Yep my dads 05 rolla does it too!

[Steve84]

This does seem normal has i had a rover 216 and rover 25 both 1.6 16 valve k-series engines and these did the same at first rover replaced the throttle bodies from plastic to metal ones. That never solved it after contacing the factory it turned out to be a way of burning off excess fuel and to help the kick you get if you let the clutch out to fast between gear changes. Has for high revving on cold morning my avensis and dads both rev at around 2200 rpm for 15 second or so then drop to around 1200 then down to a 1000 after couple of minutes after say 5-10 minutes there ticking over at 700-800 rpm.

[dwardu]

fellas,

it is normal for toyota engines to rev a bit more when throttle is released. this is done in order to burn the excessive fuel in the exhaust manifold. mine also revs up at startup but goes down after a short while.i think this is to better lubricate the engine before driving the car. I use a 5W-40 oil which could affect the whole startup process.

[Timo]

Hello!

Yes, this is fully normal!

All new Corollas do this, it will be smoother the more you drive it and get used to it. And after a while it won't do it anymore, or only on starts!

It's a new car mate, and it requires about 2000-3000km before it works perfect!

Cheers!

[dmart]

I don't agree - this is not "normal" nor good. Toyota are fobbing us off. I have found Toyota to be unusually aggressive about this but its dealers embarrassed - as if they sympathise but can't say.

The over-revving on gearchange and start-up are the result of Toyota designers trying to be a bit too clever on emissions. Having got it wrong, they don't want a massive recall. Since it is only drivability rather than safety, they are sticking to their position. These tricks are a bit like limiting the speed of a car to 50 mph in order to claim 70 mpg and beat those of competitors. Put another way, if they want to reduce emissions, they should produce cleaner engines rather than limit what drivers can do.

They say it was to achieve EURO 4 compliance yet most other cars do not need it. In any event, according to government figures, the 2002-2004 Corolla models were already EURO 4 compliant without the new tricks. I suspect they were experimenting prematurely with EURO 5 compliance - one of their technicians has admitted as much. Anything to get one over on competitors.

But see if the next model has it.....

[stuartr]

My parents have discovered a cure for the over revving on start up(cold).

Get this:

Mom has always followed the owners manual which says do not press the accelerator pedal before or during any start up.(As should be the case with any vehicle that has fuel injection and engine management),However thay did discover (quite recently and by pure fluke)that before a cold start a smart press and release of the accelerator before keying on made starting ok.No rev to 3000 rpm.All this would do is open and close the throttle butterfly with the ECU unpowered but it seems to cure the issue.

Irony is they're about to sell the car!

[The Gooner]

my P reg 1.3 escort revs between gear changes as well

[TaraVee]

What if this is happening when you’ve slowed down got enough revs and in the correct gear and the car while foot on accelerator to then increase speed sounds like the clutch is being ridden and foot is no where on or near clutch pedal 

[APS]

18 minutes ago, TaraVee said:

foot on accelerator to then increase speed sounds like the clutch is being ridden and foot is no where on or near clutch pedal 

What you describe sounds like a slipping clutch. That is not related to the topic of this thread. You most likely need the clutch replaced.