Technical What is this ???

[dazzo666]

Hello all peeps,
Can one of you answer this question please,
What is this screw for and what is the correct adjustment of it please (On top of the throttle body).....
cheers all... Dazzo

 

[Hellcat]

Looks like manual idle control valve. Screw it in or out to adjust the idle before the electronic idle valve takes over.

 

[Tony M]

yup it's a idle mixture adjustment according to the books.

 

[sumplug]

Its an air bleed screw for setting the idle [usually after a rebuild].

Andy.

 

[SteveNZ]

Just a simple idle speed screw. This needs to be set correctly as the ecu wont control the idle speed as such, it can only "idle up" for cold start, A/C etc.

 

[Trancendental]

Idle adjuster screw.

To set it you'll probably need an emmisions tester or similar.

There might be instructions in a Haynes on how to set it up yourself e.g Run car to a certain temp then adjust until x happens. You might need a external Rev Counter. I forget what they are really called, brain not working, no breakfast!

 

[sumplug]

Way ive set these up in the past, is to give it a basic idle setting, then take the car for a run using all the gears, stop and stopping. If the engine stalls, give it a quarter turn. run again and adjust if needed until the idle is nice and even when hot.

Andy.

 

[Tony M]

better late than never...

here you go. here's about as much as you are ever going to see.

 

[dazzo666]

Thanks all for your advice, Much Appreciated...