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idle speed adjustment

Hi all, Got a problem... recently I uninstall and clear the throttle body. Then screw it back. The idle speed goes 1200 rpm in stable. I guess I did mess up something during the uninstall and install the throttle body. Just want to know how to adjust the idle speed?? My car is 944S2 (driver side on right -- Hong Kong) 1989 Thanks!! Kay
Old 08-26-2004, 09:28 AM
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That oddly shaped screw on the throttle body. You need a 7 or 8mm wrench to adjust it. that is what controls idle.

AFJuvat
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Old 08-26-2004, 04:31 PM
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Quote:
Originally posted by AFJuvat
That oddly shaped screw on the throttle body. You need a 7 or 8mm wrench to adjust it. that is what controls idle.

AFJuvat
7mm wrench? I just use a flathead screwdriver - or sometimes even a housekey - to adjust my idle on this screw
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Old 08-26-2004, 06:48 PM
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Hi,

What is the "oddly shaped screw"?? Thanks

Kay
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Porsche 944S2 (3.0L, NA) 1989 -- rare in Hong Kong
Old 08-26-2004, 07:05 PM
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there is a large-ish flathead screw on the throttle body, below and to the left of the throttle cam. Turn it one way, idle goes up. Other way, idle goes down.
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Old 08-26-2004, 07:09 PM
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Old 08-26-2004, 07:34 PM
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Hi, thanks for reply.

However, my car is not same as yours... the throttle body is different. Mine is a 944 S2 3.0L engine (1989)

also, I didn't see similar screw on the throttle body too.

Thanks.

Kay
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Old 08-26-2004, 07:39 PM
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hmmm

just check on the throttle body and see if there are any random screws that don't seem to be bolting anything down. Turn them while the engine is running...

if not, perhaps the S2 is computer idle-controlled?
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Old 08-26-2004, 07:56 PM
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nah if it doesnt close, the idle stays at 2000 rpm..my car used to do that until i found out the bracket was a little bent, causing the throttle to stay open...a little muscle and the car idles fine now
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Old 08-26-2004, 08:39 PM
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thanks for your guys kindly reply.

When the car is idle, does the throttle body fully closed or leave a little gap? It is closed when engine shut down. However, engine couldn't be started when I remove the air hose... so it is a mystery... to me

(I will look for any oddly screw when I back home -- since I am in the office now)

Thanks.
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Old 08-26-2004, 08:59 PM
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Ni hao ma!

Your throttle may not be fully seated (sealed) when closed. Did you adjust this when the throttle was out of the car?



Good luck
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Old 08-27-2004, 05:54 AM
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I didn't adjust... just clearning as usual. Anyway, I am going to take it out again tomorrow and see anything wrong. If still fail, I shoot some photos and share with your guys. Hope it help! Thanks. Kay
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Old 08-27-2004, 07:40 AM
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how be your llama.
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Old 08-27-2004, 07:47 AM
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Kayw- I am thinking this is something simple...

Maybe a thread from the cleaning rag got stuck in the throttle opening or something.....Try this if you need more info



FR- GET BACK TO WORK......


shouldn't you be designing some rockets or something right now?
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Old 08-27-2004, 07:54 AM
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Finally I fix the idle. There are 2 screws on the throttle switch. Slightly loose 2 screws to adjust the position of the throttle body until a "click" sound heard. I think the "click" sound is the position of idle speed position. The car runs good now. Thanks for all of you helping me!! Kay
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Old 08-29-2004, 02:36 AM
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