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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 01-21-2015, 09:23 AM
harleyrob harleyrob is online now
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TB gasket and ICV grommet?

Getting ready to replace intake boots (DISA too) and GoForthFast suggested replacing the throttle body gasket and the ICV grommet as well. When I was removing the old boots yesterday I did not see what I thought was the gasket or grommet. Can someone tell me where these are located and how to install? Thanks.
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Old 01-21-2015, 04:36 PM
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G. P. Burdell G. P. Burdell is offline
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The throttle body gasket seals the throttle body housing to the intake manifold.

The ICV grommet seals the ICV where it inserts into its port in the intake manifold. A pair of needle-nose pliers will help to pull the old grommet out. As I recall, the grommet is indexed to a notch in the port, so there's only one way to install the new grommet. Lightly lubricate the nipple of the ICV with anti-seize before pushing it into the new grommet.
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Old 01-21-2015, 06:29 PM
SilberVogel SilberVogel is offline
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^ Good advice above. Pictures are worth a thousand words.

Here’s what the ICV grommet looks like:



And here’s a shot of the grommet installed without the ICV in yet (note the notch on the right-hand side of the grommet).



Once you remove the throttle body, there’s a gasket between it and the intake manifold, as G. P. Burdell mentioned.

Here’s a shot of it removed with the orange gasket fitted in the groove:



Other sources with great pictures and steps that may be of use:

Dummies Guide For Cleaning The Idle Control Valve: http://www.bimmerfest.com/forums/sho...d.php?t=248979
Throttle Body / Idle Control Valve Cleaning DIY: http://forum.e46fanatics.com/showthread.php?t=615503
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Old 01-22-2015, 07:47 AM
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Scott ZHP Scott ZHP is offline
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Just did an ICV replacement on wife's X5 (same M54 engine). The ICV grommet is made of plastic; it was surprisingly difficult to remove; hard to get a good grip on the thing. No probs installing the new one; light spritz with silicone spray and it pops right in; as mentioned, ensure the tab is seated in the notch.
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Old 01-22-2015, 08:06 AM
harleyrob harleyrob is online now
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Quote:
Originally Posted by G. P. Burdell View Post
The throttle body gasket seals the throttle body housing to the intake manifold.

The ICV grommet seals the ICV where it inserts into its port in the intake manifold. A pair of needle-nose pliers will help to pull the old grommet out. As I recall, the grommet is indexed to a notch in the port, so there's only one way to install the new grommet. Lightly lubricate the nipple of the ICV with anti-seize before pushing it into the new grommet.

Quote:
Originally Posted by SilberVogel View Post
^ Good advice above. Pictures are worth a thousand words.

Here’s what the ICV grommet looks like:



And here’s a shot of the grommet installed without the ICV in yet (note the notch on the right-hand side of the grommet).



Once you remove the throttle body, there’s a gasket between it and the intake manifold, as G. P. Burdell mentioned.

Here’s a shot of it removed with the orange gasket fitted in the groove:



Other sources with great pictures and steps that may be of use:

Dummies Guide For Cleaning The Idle Control Valve: http://www.bimmerfest.com/forums/sho...d.php?t=248979
Throttle Body / Idle Control Valve Cleaning DIY: http://forum.e46fanatics.com/showthread.php?t=615503

Thank you, G.P. and SilberVogel!!! This is sooooo helpful!!! I'm ready to get er done now!!
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