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Old 08-16-2007, 11:52 PM   #1
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Cleaning Throttle Body

Hey guys, I've noticed that my idle sometimes fluctuates, and from what I've learned here, it could be that my throttle body needs a nice cleaning. (eGas car). I'm going to take the TB off to do a thorough front/back cleansing. So my question is, do the throttle bodies on the 986 use a gasket?

(Most of my previous cars used gaskets from the throttle body to the Intake manifold, and would require either replacing the gasket each time you took it off, or reusing a gasket/using gasket maker filling.)

From the posts I've read so far about cleaning the 986 TB, no one has mentioned a gasket...

Can anyone chime in on this? And if it doesn't use a gasket, what steps can be used to prevent any sort of air leak upon reinstalling the TB? and does anyone know what is the proper Torque spec for the TB bolts?

Thanks in advance!

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Last edited by chaudanova; 08-17-2007 at 12:28 AM.
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Old 08-17-2007, 05:24 AM   #2
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Quote:
Originally Posted by chaudanova
Hey guys, I've noticed that my idle sometimes fluctuates, and from what I've learned here, it could be that my throttle body needs a nice cleaning. (eGas car). I'm going to take the TB off to do a thorough front/back cleansing. So my question is, do the throttle bodies on the 986 use a gasket?

(Most of my previous cars used gaskets from the throttle body to the Intake manifold, and would require either replacing the gasket each time you took it off, or reusing a gasket/using gasket maker filling.)

From the posts I've read so far about cleaning the 986 TB, no one has mentioned a gasket...

Can anyone chime in on this? And if it doesn't use a gasket, what steps can be used to prevent any sort of air leak upon reinstalling the TB? and does anyone know what is the proper Torque spec for the TB bolts?

Thanks in advance!
There's a gasket. You probably should replace it.
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Old 08-17-2007, 06:57 AM   #3
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Quote:
Originally Posted by chaudanova
From the posts I've read so far about cleaning the 986 TB, no one has mentioned a gasket...
There is a gasket, the one on my non e-gas was a rubber band like gasket that fit between the intermediate shaft between the intakes and the throttle body. It may be hard to see because it may be covered with grime but it should be there. It's $3 or something like that,if you already have a reason to place a order with Sunset Imports or such I'd buy another one,but it will be o.k. if you reuse it.
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Old 08-17-2007, 02:34 PM   #4
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Same issue here

I have the same issue with mine and intend to do the clean out this weekend. I found this thread which might help.

http://www.renntech.org/forums/index.php?showtopic=14548
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Old 08-17-2007, 11:51 PM   #5
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Done

Hi Guys,

Cleaned the throttle body today & fixed my hunting at idel problem. Was very easy and took me a total of about an hour all up. I took a few pics to show how it's done if anyone is interested.

I understand it is a very common problem with our cars although even my specialist Porsche mechanic thought it was something more serious like a vacume leak or soemething.

Anyway she now idles at about 700rpm rock solid after a few minutes after start up.

I'll post a few pics & a brief guide in the DIY Section
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Old 08-20-2007, 04:02 AM   #6
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Originally Posted by aussieboxy
Hi Guys,

I'll post a few pics & a brief guide in the DIY Section
Great, I tried cleaning my MAF to see if that would help my idle problem but it didn't so it sounds like throttle body is next.
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Old 08-20-2007, 11:14 AM   #7
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Thanks for the responses guys! I just picked up some CRC throttle body cleaner and some CRC MAF cleaner as well. I'll be cleaning out the TB and MAF hopefully this or next weekend.

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Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"

WTB: looking for some 5-7mm spacers with extended bolts
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