URGENT: need throttle brass screw

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gsa60
Started learning about 480
Posts: 81
Joined: Tue May 21, 2013 10:18 pm

URGENT: need throttle brass screw

Post by gsa60 » Sun Jan 13, 2019 3:57 pm

Hi,
I need urgently the theottle brass screw that adjusts the idle. It's for a 91 turbo.

Anyone has one that can sell?
Cheers

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jamescarruthers
480 Is my middle name
Posts: 1562
Joined: Mon Jul 07, 2003 3:19 pm
Location: Cambridge

Re: URGENT: need throttle brass screw

Post by jamescarruthers » Sun Jan 13, 2019 7:57 pm

Part number is 3344818 (no longer available, surprise, surprise)‎. Parts book has this used on the 2.0 cars too so that should widen your search a bit. 
1987 Volvo 480 ES, 507274, 217 - Red (Ness)
2001 Volvo C70 2.4T convertible (Olivolvo)
2008 Mini Cooper convertible (Mau)

Previous 480's:
J123 CFU -- ES
J449 MNL -- ES
D864 CPV -- ES
L691 JFC -- Turbo
F70 MNR -- ES
H858 FGV -- Turbo
E981 KHM -- ES (509849)

Alan 480
480 Connoisseur
Posts: 834
Joined: Sun Aug 28, 2011 9:03 am
Location: Aberdeen

Re: URGENT: need throttle brass screw

Post by Alan 480 » Mon Jan 14, 2019 12:47 pm

gsa60 wrote:
Sun Jan 13, 2019 3:57 pm
Hi,
I need urgently the theottle brass screw that adjusts the idle. It's for a 91 turbo.

Anyone has one that can sell?
Cheers
Do you know the thread pattern? it is likely metric ?

or which one is it on the two litre and i can have a quick look if that helps then but a box of twenty from Screwfix :-)
Alan

480 ES 2litre x 2, C30 1.8ES, SS1

User avatar
jamescarruthers
480 Is my middle name
Posts: 1562
Joined: Mon Jul 07, 2003 3:19 pm
Location: Cambridge

Re: URGENT: need throttle brass screw

Post by jamescarruthers » Mon Jan 14, 2019 1:09 pm

Turbo, item 3:‎
Image

B20, item 3
‎[url=https://postimg.cc/TKTCNHpk]Image
1987 Volvo 480 ES, 507274, 217 - Red (Ness)
2001 Volvo C70 2.4T convertible (Olivolvo)
2008 Mini Cooper convertible (Mau)

Previous 480's:
J123 CFU -- ES
J449 MNL -- ES
D864 CPV -- ES
L691 JFC -- Turbo
F70 MNR -- ES
H858 FGV -- Turbo
E981 KHM -- ES (509849)

Alan 480
480 Connoisseur
Posts: 834
Joined: Sun Aug 28, 2011 9:03 am
Location: Aberdeen

Re: URGENT: need throttle brass screw

Post by Alan 480 » Tue Jan 15, 2019 12:38 pm

cheers

might be the week-end cos it's dark when i get home and car is outside, and don't fancy dropping the ruddy thing then having to explain to SWAMBO why the car is 'off the road' ;)
Alan

480 ES 2litre x 2, C30 1.8ES, SS1

malkontent
Knows an Aerodeck isn't a 480
Posts: 263
Joined: Fri Jan 15, 2010 1:20 pm
Location: Cracow , Poland

Re: URGENT: need throttle brass screw

Post by malkontent » Wed Jan 16, 2019 9:55 am

Hi
Maybe I can help you , have 1.7 Turbo and 2.0 engines for spares .
Marek

Robou
Knows an Aerodeck isn't a 480
Posts: 253
Joined: Sun Jul 08, 2007 11:34 pm

Re: URGENT: need throttle brass screw

Post by Robou » Wed Jan 16, 2019 11:13 pm

If this #3 is indeed the screw you're worried about, just use anything to plug the hole. There's no use for it. Let alone for adjusting idle.
Too old to bother
480 Turbo midst '91

Alan 480
480 Connoisseur
Posts: 834
Joined: Sun Aug 28, 2011 9:03 am
Location: Aberdeen

Re: URGENT: need throttle brass screw

Post by Alan 480 » Sat Jan 19, 2019 7:51 pm

Robou wrote:
Wed Jan 16, 2019 11:13 pm
If this #3 is indeed the screw you're worried about, just use anything to plug the hole. There's no use for it. Let alone for adjusting idle.
Given this post are you still needing a blanking screw? I got sort of distracted today with drive shaft issues :(
Alan

480 ES 2litre x 2, C30 1.8ES, SS1

gsa60
Started learning about 480
Posts: 81
Joined: Tue May 21, 2013 10:18 pm

Re: URGENT: need throttle brass screw

Post by gsa60 » Sun Jan 20, 2019 2:28 pm

Yep, PM sent

gsa60
Started learning about 480
Posts: 81
Joined: Tue May 21, 2013 10:18 pm

Re: URGENT: need throttle brass screw

Post by gsa60 » Sun Jan 20, 2019 4:58 pm

BTW,
Robou: pluging the hole from the outside (and not between the manifold and the intake pipe) a high reving engine. Pluging the hole between the intake manifold and the intake pipe, leads to low idle.
Cheers

Alan 480
480 Connoisseur
Posts: 834
Joined: Sun Aug 28, 2011 9:03 am
Location: Aberdeen

Re: URGENT: need throttle brass screw

Post by Alan 480 » Mon Jan 21, 2019 9:11 pm

gsa60 wrote:
Sun Jan 20, 2019 2:28 pm
Yep, PM sent
well I had a look this evening (under flood light, so not as good as day light) and I can't see any screw that is on the back of the throttle body pointing forward!!!

there is a small 'item' that is covered with a plastic fitting and an aluminium 'clip' but it is maybe a throttle stop (I THINK) but it runs from left ot right :?
the screw (if it is a screw ) might be threaded in from the engine side and goes towards the air filter
Alan

480 ES 2litre x 2, C30 1.8ES, SS1

Gmac34
480 Newbie
Posts: 46
Joined: Fri Mar 11, 2016 3:01 pm

Re: URGENT: need throttle brass screw

Post by Gmac34 » Tue Jan 29, 2019 2:36 pm

Image

I lost my idle screw this summer, turns out it's the same as in a Porsche 944
Porsche code is 951.110.919.00
https://www.paragon-products.com/Idle-S ... 919.00.htm
Last edited by Gmac34 on Tue Jan 29, 2019 2:57 pm, edited 1 time in total.

User avatar
jamescarruthers
480 Is my middle name
Posts: 1562
Joined: Mon Jul 07, 2003 3:19 pm
Location: Cambridge

Re: URGENT: need throttle brass screw

Post by jamescarruthers » Tue Jan 29, 2019 2:45 pm

Gmac34 wrote:
Tue Jan 29, 2019 2:36 pm
Image

I lost my idle screw this summer, turns out it's the same as in Porsche 944
Porsche code is 951.110.919.00
https://www.paragon-products.com/Idle-S ... 919.00.htm
Brilliant!
1987 Volvo 480 ES, 507274, 217 - Red (Ness)
2001 Volvo C70 2.4T convertible (Olivolvo)
2008 Mini Cooper convertible (Mau)

Previous 480's:
J123 CFU -- ES
J449 MNL -- ES
D864 CPV -- ES
L691 JFC -- Turbo
F70 MNR -- ES
H858 FGV -- Turbo
E981 KHM -- ES (509849)

Gmac34
480 Newbie
Posts: 46
Joined: Fri Mar 11, 2016 3:01 pm

Re: URGENT: need throttle brass screw

Post by Gmac34 » Tue Jan 29, 2019 2:50 pm

the original Volvo one that I found after a while on the side of the road... Image

I replaced with a new one anyway as I wasn't able to find a correct size O-ring and the old one was the reason it was loose in the first place.

BTW I think this indeed has an effect on the idle, The ICV is making the fine work of course, but I think it is still good to follow this procedure:
viewtopic.php?t=19073

Check the idle speed and adjust the basic setting
Move the idle speed regulating valve to the basic setting by earthing the cable* in the test point near the crankcase ventilation.
*B18F: brown/green; B18FT: brown/grey.
-Switch off the airconditioning and wait until the thermostat is fully open and the cooling fan has switched itself off.
-The idle speed should then be 11.7 r/s (700 r/min); adjust, if necessary, with the adjusting screw on the front of the TB. (brassy - gold colour)
-Remove the earth connection from the test point.
-The idle speed should then increase to 13.3 r/s (800 +-25 r/min).

In my understanding, it lets the ICV work in the correct range and it made quite a difference (for the better) to do it this way instead of just screwign it in all the way, mostly noticeable while parking as the engine revs would not dip down that much

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