2009 corolla shaking !!!

[anassq]

Hi guys,

Toyota cars are perfect ( some how ). They make u proud in all cars and driving aspects.

but sometimes even with advance technologies, the car may bother u and make u unhappy especially when u purchase

a car with your favorite features like here for example (manual transmission).

since the very beginning of my driving for my corolla 2009 1.6L engine, I noticed a strange bad phenomenon happening when u shift the gear from one to the other.

generally,the car produce a violent shake while shifting. It sounds like the car is releasing the pedal and depressing it again simultaneously.

you feel like you are pressing the pedal but for part of a second the car doesn't respond.This shaking also happen in a very notable way at high speeds like launching the car(if you wanna race with someone )especially, when the RBM exceeds 5 .This problem reduces the car acceleration as u need to wait for the car to catch its breath in each sift and that become like riding a horse with the movement back and forth due to this shaking.

some one told me that it most likely a controlling system for the fuel flowing to the engine.

have anybody faced this kind of problem?

and if u did, do u know a way of fixing it or even disabling the cause of the shaking stuff?

because I started thinking of selling the car if this problem is unsolvable ( Joking )

I hope u understood the issue.

Edited October 21, 2010 by anassq

[dutchie101]

Its still under warranty, take it back to the dealer, sounds like fuel cut or ECU/MAF problems.

[anassq]

Its still under warranty, take it back to the dealer, sounds like fuel cut or ECU/MAF problems.

Thank u dutchie for the reply

but regarding this, I've asked all new corolla's owners. They say its the car nature and their cars have the same problem!!

I used to drive manual transmissions in my whole live but this one is different.

[dutchie101]

Ah, your talking about the accelerator "hold/lag" after you lift your foot off? The revs hold for a bit and then drop off? This is normal across the whole ZRE range, but it doesnt produce violent shaking, just sustained throttle for longer than one would like. Learning different foot technique can reduce or eliminate this. Installation of a CAI also seems to help reduce the effect.

Again, the lag doesnt cause any shudder or shake..

Hope that helps

[anassq]

Ah, your talking about the accelerator "hold/lag" after you lift your foot off? The revs hold for a bit and then drop off? This is normal across the whole ZRE range, but it doesnt produce violent shaking, just sustained throttle for longer than one would like. Learning different foot technique can reduce or eliminate this. Installation of a CAI also seems to help reduce the effect.

Again, the lag doesnt cause any shudder or shake..

Hope that helps

yeah exactly!

but the shaking comes when I depress the pedal again after the revs hold, the shudder is like when u release the gas with a low gear and suddenly and immediately slam it again!

A friend of me has a 2010 Camry with manual transmission. I tried it but I found nothing of this happening.

And about the accelerator "hold/lag", is it a system or a device that it's function can be disabled? and how if it is?

thank u so much dutchie101 for ur response.

Edited October 22, 2010 by anassq

[dutchie101]

And about the accelerator "hold/lag", is it a system or a device that it's function can be disabled? and how if it is?

I thinks its written in the ECU code, so we cant do much about it until someone learns how to remap or re-flash the ECU if it is possible. Apparently WRX owners have found a fix for it. It has to do with the ECU telling the Fly-By-Wire throttle to hold open for that little extra bit. Installation of a Cold Air Intake seems to reduce the effect a little, and Im not sure why. Others have also said after CAI install the effect is lessened a little.

Also, how you let your foot off and how you operate the throttle can overcome it too, you just have to play around till you get it. How i have found to do it is almost give it an extra quick stab before lifting your foot off. Hard to explain...

[anassq]

I know someone who has a 2008 new corolla 1.6L engine. He made a little trick and the shuddering was gone.

what he had done was simply unplugging a cable with several wires located in the fuse box.The result extended even bigger and disabled the electric steering wheel and the odometer stopped reading the mailage, as he said.

When I heard that I believed that their is still a hope to over come the issue. Something in the engine can be eliminated to get rid of the shaking as the fuse box experiment showed.

But what is it? what was the thing that was shutoff with just disconnecting a wire?

Edited October 23, 2010 by anassq

[rthy]

which model corolla is this?

[anassq]

which model corolla is this?

^^

2009