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Idling Issue; help
Topic Started: Jun 23 2011, 04:00 PM (2,893 Views)
peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
Ok, since the coversion complete idle has been kind of funny.
At first I just thought since it hasn't been running for a while so ECU needs to learn everything again. Been driving for 2 weeks now. problem still here

basically idle over 1k after cooling down.
everytime i come to a stop, when the car is still rolling in neutral the rev will jump up and down between 1-2k. when the car finally stops it'll stop jumping and stay at 2k then slowly drop down...get to the next set of lights..same thing again

the other day when i disconnect the battery to fix edfc. after reconnecting the battery it was idling perfectly...then the next day...problem was back again.

it is annoying and wasting fuel.

i've cleaned the MAF sensor with the elelctrical spray and cleaned throttle body, stock airbox ( just without the scoop that goes over radiator as it won't fit with the alloy radiator)

please advise what the problem may be? Thanks.
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
some body help...
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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E910
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MOTUL 300V
[ *  *  *  *  *  * ]
Have you tried getting any codes out of it? Could be a faulty sensor
アルテッツァ RS200-Z 6MT
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
not yet.. too busy and lazy hehe
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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greeneyes
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Targa Master
[ *  *  *  *  *  *  *  *  * ]
Did you sort he interior light/rear door sensor problem??

These are subtle little differences between IS200 & Altezzas that make conversions hard to be seamless.

People say "why don't you put a 4AGE in the KE70?" and I think of all these little problems that don't seem to come right!
The Girl's KE70-
http://www.rollaclub.com/board/topic/42407-the-girls-ke70/
How NOT to build a rally car-
http://www.rollaclub.com/board/topic/64027...ld-a-rally-car/
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
strangely enough, idle is normal for the first time!!! its so quite and smooth when i stop at the lights now :) lets hope it stays that way. maybe the ecu has finally learn its lesson!!! haha
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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4TEZNU
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Stock
[ *  * ]
I have the same problem converting from auto to manual - even though I have a manual computer it still fluxuates with the idle, only when stopping though like at lights and my one revs down not up, so will go from about 1000rpm to under it like the car will stall (even though it never has), unsure what it is but only affects me some days too, so bit random! If you find the way to fix it let me know:)
1999 Toyota Altezza RS200 6MT - Blue

19" Konig Hotwaps, LSD, HKS Headers, TRD Engine Cover, HKS Performance Exhaust, Exedy HD Clutch & Single Mass Flywheel

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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
it just resolved itself..LOL..i think its the ecu trying to learn everything
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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AltezzaFanatic
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Stock
[ *  * ]
Hi Guys
Facing a simillar issue. Mine is opposite. at idle the rpm is around 500rpm.
I have changed new coil pack and cleaned the throttle and MAP sensor.
Still same issue. Did diagnostic check and no error. Going to change to a new MAP sensor and let see that helps...
2003 RS200 6MT.
Toda 268 Deg Cam.
K&N Panel Filter
Apexi Power FC EL Version
TRD Yellow ARB.
Endless Basic Rotors
Endless SS-Y Pads Front and Back.
Toda Power Lightweight Flywheel.
OZ Racing Ultraleggera 17x8 +48
HKS Silent Hi Power
FGK 4-2-1 Extractor and downpipe
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
How long has it been for you?

for me this lasted for about 2 weeks before ecu finally found its rhythm

For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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AltezzaFanatic
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Stock
[ *  * ]
Mine is been like this for couple of months..... :unsure:
2003 RS200 6MT.
Toda 268 Deg Cam.
K&N Panel Filter
Apexi Power FC EL Version
TRD Yellow ARB.
Endless Basic Rotors
Endless SS-Y Pads Front and Back.
Toda Power Lightweight Flywheel.
OZ Racing Ultraleggera 17x8 +48
HKS Silent Hi Power
FGK 4-2-1 Extractor and downpipe
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cpufix
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Paraparaumu, Wellington
[ *  *  *  *  *  * ]
peanut,Jul 1 2011
12:50 PM
How long has it been for you?

for me this lasted for about 2 weeks before ecu finally found its rhythm

So if you reset the ECU the problem may come back ?
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
yes i reset the ecu, it was good for a day, next day it came back.

but then 2 weeks after car has been running idle is Almost normal now hahaha..almost..
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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AltezzaFanatic
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Stock
[ *  * ]
Guys

What is the round thing connected between the tubes.? According to Toyodiy.com it is called " Valve, Check No1".

What does it do?.

As I mentioned before my car idles at 500rpm. I have done diagnostic and no error found. I guessed it must be something non electronic causing the idle to be low.

It comes from the vacuum Assy to the throttle body. I am guessing it could something
to do with this. What do this thing do?.

Here is a picture of what I am talking about.

BTW I have cleaned the MAP sensor and the throttle 1 weeks ago and still no improvement.
2003 RS200 6MT.
Toda 268 Deg Cam.
K&N Panel Filter
Apexi Power FC EL Version
TRD Yellow ARB.
Endless Basic Rotors
Endless SS-Y Pads Front and Back.
Toda Power Lightweight Flywheel.
OZ Racing Ultraleggera 17x8 +48
HKS Silent Hi Power
FGK 4-2-1 Extractor and downpipe
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
refer to this

http://z4.invisionfree.com/lexusaltezzaclu...topic=11958&hl=

that round thing at the bottom of the pic is a vaccum valve. when ur car turns on vaccum is created and will make that valve move to shut the cover for the intake comes from vent over the radiator.
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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AltezzaFanatic
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Stock
[ *  * ]
I was referring to the Blue thing in the picture. ...

It is connected to the vacuum and the throttle body.

I am guessing either this component is not working properly or there is a
vacuum leak.

I will check it out tonite .....

<_<
2003 RS200 6MT.
Toda 268 Deg Cam.
K&N Panel Filter
Apexi Power FC EL Version
TRD Yellow ARB.
Endless Basic Rotors
Endless SS-Y Pads Front and Back.
Toda Power Lightweight Flywheel.
OZ Racing Ultraleggera 17x8 +48
HKS Silent Hi Power
FGK 4-2-1 Extractor and downpipe
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peanut
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Red Horns Devil
[ *  *  *  *  *  * ]
oh sorry, that's just a vacuum line filter
For Vinyl Car Wrapping solutions and CarbonFiber parts email:adam@modbox.works
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AltezzaFanatic
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Stock
[ *  * ]
strange cos in Toyodiy.com it is called valve...

What is the chances of this being faulty????...

Why do we need vacuum for the throttle body anyway???... :huh:

Has it got something to do with opening and closing of throttle during idle..

If this is not working properly or there is a vacuum leak and the throttle is not opening

enough then maybe that could explain the low RPM.. :unsure:

I noticed at 500rpm I can hear misfire sound in the exhaust and the engine

shaking slightly.
2003 RS200 6MT.
Toda 268 Deg Cam.
K&N Panel Filter
Apexi Power FC EL Version
TRD Yellow ARB.
Endless Basic Rotors
Endless SS-Y Pads Front and Back.
Toda Power Lightweight Flywheel.
OZ Racing Ultraleggera 17x8 +48
HKS Silent Hi Power
FGK 4-2-1 Extractor and downpipe
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Soiled Altezza
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...
[ *  *  *  *  *  * ]
If you unscrew the TPS and turn it slightly you can adjust the idle... don't know if this is the correct thing to do but it works haha.
Posted Image
Garage: http://altezza.dualzdesigns.com/viewcar.ph...wner=17&frmpg=0
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greeneyes
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Targa Master
[ *  *  *  *  *  *  *  *  * ]
Quote:
 
oh sorry, that's just a vacuum line filter


I think its a vacuum delay valve, so it does not pass on vacuum signal until the vacuum reaches a certain level.

The mechanic who first tuned my KE70 fitted one in the dizzy vac advance line. I have since drilled through the middle of it when I fitted an electronic dizzy and re-curved it myself. :rolleyes:
The Girl's KE70-
http://www.rollaclub.com/board/topic/42407-the-girls-ke70/
How NOT to build a rally car-
http://www.rollaclub.com/board/topic/64027...ld-a-rally-car/
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supertezz
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3SGE+T = :D
[ *  *  *  * ]
I had the exact same problem last week after resetting my ecu it probably takes a couple of hundred ks of re learning in different rev conditions but it always comes right after a few weeks
3SGE+T = :D

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E910
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MOTUL 300V
[ *  *  *  *  *  * ]
I've just been reading a Mazda bulletin on idling issue after PCM update, not sure if this idle re-learn procedure will work on an Altezza/IS but it's worth a try.
Quote:
 
Inspect the idle stability as follows:
With the engine at normal operating temperature, while road testing the vehicle, turn off ALL
electrical loads. Pull up to a standstill. With the engine idling in D (AT), Neutral (MT),
maintain application of the foot brake for 10 seconds. If the idle speed drops below 650 rpm
and engine vibration is experienced, follow the process below.

NOTE: Only perform the following idle re-learn if the conditions above are experienced.

1. Ensure that engine is at normal operating temperature.
2. Disconnect battery and reconnect after 1 minute.
3. Idle the engine for 3 minutes in P or N range (AT) or Neutral (MT) in each of the following
conditions:- a, b, c, d increasing engine load each time. (i.e. A +B+C/D)
a.) No electrical load, no AC load
(b.) Apply electrical load more than 38A*. (Turn on head lights low beam and rear demister)
c.) Apply low AC load (without middle pressure SW off)
d.) Apply high AC load( with middle pressure SW on)
4. Repeat Item 2 (a, b, c, d) in D range (if the vehicle has AT.).
アルテッツァ RS200-Z 6MT
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