vy ls1 high idle!! please help.

[victor71]

Hey guys i got my vy ls1 ute and i have noticed that when it warms up it seems to idle high (1500 rpms). now i have looked into this and i checked the PCV hose and i replaced it because the old one the join was busted. Yet again it still does it. What else should i check for? it has had a maffless tune and many people have told me that its some throttle cracker? also sometimes my car seems to be weird and when i start it and pump the aircon the car will seem to stall? please help thanks

[Vt_vic]

throttle cracker is tune related so ask your tuner

[rjhoomuck]

Hey there! My car is kind of having the same problem. When ignited it stays reving up to 1500 rpm. Did you get yours fixed?

[Kingston_99]

mines been doing the same.

i fixed mine by changing the TPS (throttle positon sensor). i got mine from holden for $280 (i only use GM parts for sensors etc).

also other key points to look at.
stepper motor on throttle body. (if you look at your TB, you will see two sensors on the right hand side. the bottom one is the TPS. top one is the stepper motor)
TPS (throttle position sensor)
PVC lines (check for cracks, check the ends are contected properly
o2 sensors in your exhuast maybe gone
it maybe tune related.

[rjhoomuck]

Hi,
thanks for the response. I got my vy sitting in the garage since my mechanics place is closed. however im really keen to fix that myself. I removed the sensor from the top of the throttle body wich i believe is the IAC. it had plenty of carbon, so cleaned it up with carby cleaner and i noticed that the spring is very sticky and it wont return to its original position. but everything back again and the problem is still here. I wanted to take the whole throtttle body out but the black PVC tube seem to be stuck with the throttle body. do you have any idea about how to take the pvc tube off?
also i will be changing both sensors during the week. I hope it gets fixed.
thanks for the response mate!

[rjhoomuck]

also, is the throttle body with the sensors from a vx fit my vy series 2?

[DLFHUB666]

i think the vx an vy have different pcv setups so it might fit but will have the stupid vx setup.

[rjhoomuck]

Following threads from this website, i cleaned the two sensors in the throttle body. Disconnected the battery for 10 minutes and connect again to reset the computer. start the engine and keep accelerating for 10 secs at 2000rpm. Mine got fixed after doing all the above.

[Shambo]

Idle relearn Long Method from HSV forums Idle Learn Procedure...IAW Holden Workshop Manual [Archive] - HSV Forum


This needs to be done after disconnecting the Battery or doing such tasks as Throttle body Cleaning etc...

The Information is from Holdens Workshop Manual:

Automatic Transmission:
1. Ignition Off
2. Restore PCM Battery Feed
3. Turn OFF the A/C Control (if fitted)
4. Set Park Brake and chock road wheels.
5. Run engine at Idle
6. Shift transmission to D (drive)
7. Allow engine to Idle for 10 Minutes.
8. Turn ON A/C controls
9. Allow engine to idle for 10 Minutes
10. Shift Transmission to P (Park)
11. Allow engine to idle for 10 Minutes
12. Turn Off A/C Controls
13. Allow engine to idle for 10 Minutes
14. Turn Off engine for min 30 Seconds
15. Start the engine and Idle for one minute

Manual Transmission:
1. Ignition Off
2. Restore PCM Battery Feed
3. Turn OFF the A/C Control (if fitted)
4. Set Park Brake and chock road wheels.
5. Shift Transmission to Neutral
6. Start and Run engine at Idle
7. Turn ON A/C controls
8. Allow engine to idle for 10 Minutes
9. Turn Off A/C Controls
10. Allow engine to idle for 10 Minutes
11. Turn Off engine for min 30 Seconds
12. Start the engine and Idle for one minute.

Short Method from LS1 forum Fast idle relearn [Archive] - Australian LS1 and Holden Forums

Short method after reset:

turn on the reds, don't start.
push the gas pedal down 3-5 times.
turn off reds
start car

-----------------------

My car is a stock standard 04 CV8 and I have tried the short method and it worked fine for me.

My car was idling high, around 1000/1100 rpm then after doing the relearn it has gone down to 800 (on the cluster not measuring with any plug in stuff).

Still goes a bit high when i first put the clutch in but, up say 50 to 150 rpm but aparently thats normal.

[YEWWWW]

hey mate,

one of my friends had the same problem and he fixed it buy changing his oxygen sensors or his mass air flow metre I can't remember, hope this helps