Kong

I have a xB auto. It runs fine and has very little vibration at the stop light. Once I install the injen RS, I notice more vibration at the break padel at the stop light. When I put the transmission to neutrol, there is no vibration. The car runs fine. I also have ground wires so the idle is already smooth. Does any one has some ideas of how to minimize the vibration?

Thanks!

BoomBox757

It can't handle the Huge power increase

Kong

I know, the car has more power for sure .

I'm not sure if my logic is right. Correct me if I wrong.

I think it's due to insufficient electrical power to meet the demand of the engine power at idle. So when voltage from the battery become rough (has more ripple), it cause the engine runing rough also. If this is the case, I might need a voltage stabilizer.

Anyone has some ideas?

TOAST3R

turn off the engine *giggles*

asirvr4

"reset the ECU"<-----(please, i am only a begineer)

Kong

I will try that

What is this mean? :?


Thank guys

mikochu

Hey Kong,
You might want to try making your own ground wire kit, as well. https://www.scionlife.com/forums/viewtopic.php?t=29261

Kong

Mikocho, I have some ground wires installed on my xB. I'm planing to make my own hyper voltage soon.

iowagary

Um... I really think that neither of those things has anything to do with it. This whole theory of it being insufficient electrical or even electrical related seems off to me.

Basically, my understanding is this: When you're idling, your engine trys to run as slowly as possible (for obvious reasons). What it has working against it is any load and not wanting to stall. If it gets too low, it might not stall, but it might be rough. All of this is of course controlled by the ECU, which knows how to adjust on the fly when you add something like an intake, but probably wasn't programmed to handle one, and maybe this is just your issue. Frankly, I think you're screwed. It's not like you can't live with it, but I know how these things are. Since our cars all run on computers, you're stuck with what you're stuck with.

BoomBox757

is it fixed since you reset it, or have you not tried?

fireballfish

if you don't like the way it vibrates at idle, adjust the idle screw until the idle is about 1100 rpms vice the stock 800.

Kong

Thanks for all comments . I reseted the ECU when I first install the intake. My engine runs fine and has no problem at all. I will reset the ECU today and see what happen. I wonder how rough the idle will be if I install a compressor.

I don't worry about this issue too much, because I know that I can't get rid of it. At least I just want to reduce it.

BoomBox757

what intake is it?

BoomBox757

oops sorry didn't reread the top I got it Injen rs

u83rp5ych0

800???? my xB idles near 500, and it idles damn smooth.

TakumiJr

My car vibrate more once I installed my ground wires, I blame MIKO!!!

BoomBox757

mine is also around 800 and it couldn't be smoother

superjeer

isn't there a TSB for low/rough idle?

I know my auto xB needs to go in for this. It's all rattle rattle knock knock when it's cold and at a stop light.

boilerman

EG012-04
MAY 04
04
Intermittent Rough or Low Engine Idle at Stop (5 Speed)

Kong

Do you have the TSB for the auto? Will it be the same?

I might need to readjust the idle rpm from 600 to 700-800. I hope it help.

I'm in Atlanta for the whole week. Miss driving my box