Audi throttle body upgrade but no idle screw ..

Hi all, just bought an Audi throttle body to upgrade the original on my DX engine.

Received it today but unfortunately there seems to be missing a idle screw on the body?

Does anybody know how to fix this?

Can i make an idle screw location myself on the Audi throttle body?

Other than that it seems an ok part and should be ok to swap.

Or… Have I been to enthusiast an bought the wrong part…

Thx!

When you say it's missing an idle screw, do you mean there is a screw missing from the hole, or no hole at all?
I've not got one in front of me, but I'm pretty sure there should be an idle screw on their somewhere - if there isn't then it could be the wrong part.
I'll take a look at mine when I get home…

paceman said

When you say it's missing an idle screw, do you mean there is a screw missing from the hole, or no hole at all?
I've not got one in front of me, but I'm pretty sure there should be an idle screw on their somewhere - if there isn't then it could be the wrong part.
I'll take a look at mine when I get home…

Hi paceman, no there is no throttle hole at al… I assume that the car where it came from was regulated on another way… ?

I'll post some pics in a minute.

Thx

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As you can see, there are a few holes on the sides, but non of theme are drilled thru the body. Except the big one for the vacuum. But I already understood that this one just needs to be blocked.
Thing is this one seems to be on the exact spot as the idle screw on the original on my engine…
Any advice is welcome!!!

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If somebody could give me the specs of the original idle screw hole(s) I could maybe reproduce it in this TB?

I have only one TB and it is on the (driving) car so makes it rather difficult to measure it up

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No news anybody?

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do not no if you can see anything on these
that will give you a clue

will get you some better pictures
that was a poor effort

nicci21paul said

do not no if you can see anything on these
that will give you a clue

Hi Paul, sorry there seems to be something wrong with the pictures, they are too small all detail is lost. Thx for the effort though

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nicci21paul said

will get you some better pictures
that was a poor effort

Haha great thx!!

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need any more mate

nicci21paul said

need any more mate

Hi Paul, thx for the better pictures! Unfortunately this shows to me what I already was frightened of. Where you have an idle screw, is also where i have one on my original tb, but not on the new one…

Anybody any experience with this problem?  Can I drill one myself?

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Having just dug mine out of the box it's been living in for god knows how long, it's the same as nicci21paul has pictured. I don't know what Audi your is off, but it's not the right one.
I think you would struggle to make your own idle screw inlet as it is tapered to fit the screw.
If it was off ebay, I'd double check the listing - you might be able to get a refund. Sorry I don't have better news!

paceman said

Having just dug mine out of the box it's been living in for god knows how long, it's the same as nicci21paul has pictured. I don't know what Audi your is off, but it's not the right one.
I think you would struggle to make your own idle screw inlet as it is tapered to fit the screw.
If it was off ebay, I'd double check the listing - you might be able to get a refund. Sorry I don't have better news!

I'm a fraid you're right… Bought it off a local second hand website from a Dutch guy… Will contact him, hope he's willing to take it back. Pity of the shipping cost…

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it looks like the hole for the idle screw is in the audi body by the smaller butterfly and looks like it points to the large vac pipe connector so might be drilled for the screw if you remove the pipe fitting  

I have a couple of 16v throttles so will compare with those,

sporttrucker said

it looks like the hole for the idle screw is in the audi body by the smaller butterfly and looks like it points to the large vac pipe connector so might be drilled for the screw if you remove the pipe fitting  

Sharp eye!!
Had been thinking that too, so tried yesterday to carefully pry it out, but no success.

I've contacted the seller to check whether he wants to take it back (but no high hopes here).
If he doesn't, I'll take the heavier tools to remove it, keep you posted!

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Update!

So the previous owner answered me that he used the valve adjustment screw to adjust the idle of the engine.

While I have always learned that this is not the right way to control the idle rpm with. I cannot seem to know why exactly…

Can anybody tell me why it isn't a good idea to do so?
Or is there no harm and should i just go with it?

Thanks!

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I'm not an expert, but I wouldn't have thought the adjustment would be fine enough. Look at the amount of air an idle screw will admit vs the valve adjustment.
Won;t do any harm mind, but you may struggle to get any fine idle adjustment.
Then again, I may be completely wrong, but someone at somepoint thought that a dedicated means of adjusting idle was a good idea…

I'd still be tempted to cut that pipe off to see what's in there.