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fatfish
08-07-2007, 03:19 PM
what is your RPM when engine idle? my one sometime below 600rpm specialy when a/c on the engine shake more. anyone had these problem?
BusterSonic12
08-07-2007, 04:01 PM
from my apex'i neo, what i seen the lowest is 650rpm i think, not 100% sure because i drive off after it reaches below 1000rpm.

shake more?
aaronng
08-07-2007, 04:05 PM
650rpm or thereabout. It drops slightly when you turn on the A/C. Are you using any engine torque damper in your car?
fatfish
08-07-2007, 05:06 PM
i used to have engine damper on the car before, it makes the engine shake more on my car. from reading on my vafc2 sometimes wait on the traffic light the rpm sometime drop below the 600 rpm looks likly engine stall. are we able to change the engine idle high a bit from the vafc2
yfin
08-07-2007, 05:13 PM
i used to have engine damper on the car before, it makes the engine shake more on my car. from reading on my vafc2 sometimes wait on the traffic light the rpm sometime drop below the 600 rpm looks likly engine stall. are we able to change the engine idle high a bit from the vafc2

I used to have a rsm and don't recall revs ever dropping that low.
Euro76
08-07-2007, 08:33 PM
About 650rpm when the engine is idle.
aaronng
08-07-2007, 11:35 PM
Have you cleaned your filter?
fatfish
09-07-2007, 12:05 AM
not yet, but soon i am going to clean, is this could be the problem?
aaronng
09-07-2007, 12:36 AM
not yet, but soon i am going to clean, is this could be the problem?

Could be. But usually it isn't a problem.

Also, are you getting 600rpm why your car is in D? Or does it happen in P or N as well? If it happens just in D, then change your auto trans fluid.
fatfish
09-07-2007, 06:39 PM
yes it was happen when i put in D. if is the auto trans fluid i might change it when i service my car.
thank you aron
aaronng
09-07-2007, 08:55 PM
yes it was happen when i put in D. if is the auto trans fluid i might change it when i service my car.
thank you aron

Remember to give us an update after you change it. :)
fatfish
09-07-2007, 10:08 PM
ok not a problem
fatfish
07-08-2007, 08:21 PM
just post update to let everyone engine idle has been improve after change the transmission fluid and flash, also the engine oil changed.
aaronng
07-08-2007, 09:16 PM
Nice. Good that your problem is fixed.
EuroDude
07-08-2007, 11:02 PM
My idle sometimes sits at around 1100rpm after releasing teh clutch for no apparent reason, its not the fuel burn-off thing because it can sit there for like 10 seconds (fuel burn takes 1 second). I noticed that if you hold the steering wheel to one side while idling, the revs will go up a bit, but thats not it either as it happens when the steering wheel is not being held. It will finally drop down to 700RPM after a while. Im guessing its the ECU doing something

But anyways most of the time its about 700RPM so its all good
badthing
08-08-2007, 09:30 AM
I noticed that if you hold the steering wheel to one side while idling, the revs will go up a bit, but thats not it either as it happens when the steering wheel is not being held. It will finally drop down to 700RPM after a while. Im guessing its the ECU doing something

But anyways most of the time its about 700RPM so its all good

I've also noticed that pulling the steering wheel to one side will raise the revs slightly from 650rpm to 900rpm. Anyone know why this is so?
EuroDude
08-08-2007, 09:38 AM
I've also noticed that pulling the steering wheel to one side will raise the revs slightly from 650rpm to 900rpm. Anyone know why this is so?

Its because the steering hydrolics is belt driven that runs off the engine. Moving the steering wheel takes engine power, so the ECU compensates and increases the revs.
aaronng
08-08-2007, 03:07 PM
I've also noticed that pulling the steering wheel to one side will raise the revs slightly from 650rpm to 900rpm. Anyone know why this is so?

Power steering.
aaronng
08-08-2007, 03:08 PM
My idle sometimes sits at around 1100rpm after releasing teh clutch for no apparent reason, its not the fuel burn-off thing because it can sit there for like 10 seconds (fuel burn takes 1 second). I noticed that if you hold the steering wheel to one side while idling, the revs will go up a bit, but thats not it either as it happens when the steering wheel is not being held. It will finally drop down to 700RPM after a while. Im guessing its the ECU doing something

But anyways most of the time its about 700RPM so its all good

Mine's about 900rpm after coming to a stop and it takes about 5-8 seconds for it to return to 700rpm. It's to ensure that the engine revs enough to burn the remaining fuel in the intake manifold after you release the throttle.
EuroDude
08-08-2007, 03:13 PM
^ You're probably right, I guess the engine needs to keep the revs up for longer since the revs are so low near idle speed.
aaronng
08-08-2007, 03:20 PM
^ You're probably right, I guess the engine needs to keep the revs up for longer since the revs are so low near idle speed.

I also noticed that if I wait for the rpm to drop to 700 before shutting the engine off, I am less likely to experience the struggling startup problem.
EuroDude
08-08-2007, 03:37 PM
I also noticed that if I wait for the rpm to drop to 700 before shutting the engine off, I am less likely to experience the struggling startup problem.

Interesting. I bet if all the Emissions features were removed, the engine would have no hesitation to start lolz