Torx size to remove IAC - LS1?

[FrangaFry]

Howdy folks, quick question (well not really quick, but..)

I want to give my IAC a clean with some carby cleaner (got the dreaded bad idle/surge and 'almost stall' on braking ........ PCV all looks good and cats have just been replaced, so it's gotta be the IAC ........... *fingers crossed*)

Tried to remove it over the weekend with the Torx key set that I have but I don't seem to have the size that fits.

Tried a T15 - too big, then a T10 - too small ............... there seems to be no 12 or 13 - am I missing something (probably, given I'm still a nuffy .....)

Also, while I'm on the subject ........... out of curiosity, called Holden spare parts today to get a price on a new TPS and IAC - nearly fell over ........... they wanted over $600 for the both (and THEN $190 to fit them .............. ppppppppppppppppfffffffffffffffffffttttttttttt ............. *shakes head*) - even the bloke on the service desk couldn't believe it (I recently replaced the TPS on the Addy and it was $40 off Evil Bay, and you can find OEM type IAC for $75-$130 ......... again, am I missing something.)

As always,

Thanks

[motomk]

I have a throttle body in bits so not sure it is the right bolt or not but most of them need a T20 torx.
There are 2 that need a T15

[FrangaFry]

Cheers mate, ended up having to get the calibrated knockometer onto it to get it sorted; Torx 10 did the job, just needed some persuading.

IAC was carboned to the sh1t house. Gave it and the throttle body a good clean.

Will drive it for a spell and if still giving me grief I will go through the re learn procedure and take it from there.

Thanks

[white lie]

Did you do an idle relearn when it was all done?

[FrangaFry]

Did you do an idle relearn when it was all done?

Not yet; I don't need to is disconnect the battery for this do I? Idle is heaps better since cleaning.

[white lie]

Disconnect the battery or pull the pcm fuse. Easier to pull the fuse IMO

[FrangaFry]

Disconnect the battery or pull the pcm fuse. Easier to pull the fuse IMO

Sweet, will give it a go. There are a couple of different ways of doing it yeah. Is the following the best way?
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.

[white lie]

That's how I've done it

[IJ.]

LOL never done an idle relearn ever ;)
(it get's it's shit together in daily driving soon enough)

[macca_779]

LOL never done an idle relearn ever ;)
(it get's it's shit together in daily driving soon enough)

Yeah me either lol

[FrangaFry]

Yeah me either lol

I'll be honest, I didn't either and she's running juuuuuuuust fine .................. *grin*