Go Back   Club Lexus Forums > Lexus Model Forums > SC Models > SC 400/300 > Performance & Maintenance
Sign in using an external account
Register Forgot Password?

What is this part attached to the throttle body?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 09-01-13, 01:06 AM   #1
CLightning
Driver School Candidate
Trader Score: (0)
 
Join Date: Jan 2006
Location: CA
Posts: 6
Default What is this part attached to the throttle body?

I was taking off the throttle body to replace the driver side coolant line and the cap (see "b" in pic) of this part partially broke off. It looks like heat and time made it very brittle. Inside the unit, there's a screen filter. The cap seems salvageable as a little silicone sealant around the edges might be able to seal it back up. So what is it and is that cap replaceable? How much $? Thanks.

Click the image to open in full size.
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
CLightning is offline   Reply With Quote
Old 09-01-13, 05:27 AM   #2
F4A22
Pole Position
Trader Score: (14)
 
Join Date: Mar 2009
Location: Fl
Posts: 308
Default

That's your diaphragm.
F4A22 is offline   Reply With Quote
Old 09-01-13, 09:00 AM   #3
BiGEZ
Pole Position
Trader Score: (18)
 
BiGEZ's Avatar
 
Join Date: Oct 2009
Location: Georgia
Posts: 325
Default

Do not seal the cap on too tight with the silicone it is suppose to vent some air out when actuating.
__________________

2001 GS300 Silver on black<> TTE Replica Lip<> XXR 20x8.5, 20x10 +35mm offset wheels.
96 SC300 auto, black on black<> 99 oem body kit <> LS400 BBK <> Supra TT Suspension <> 6K HIDs. More to come.
BiGEZ is offline   Reply With Quote
Old 09-01-13, 07:01 PM   #4
MooJohn
Lead Lap
Trader Score: (0)
 
MooJohn's Avatar
 
Join Date: May 2011
Location: GA
Posts: 485
Default

It acts as a cushion when you abruptly let off the throttle, keeping the plate from slamming shut all at once.
__________________
92 SC400 - ongoing resto project
MooJohn is offline   Reply With Quote
Old 09-01-13, 07:01 PM
 
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
What is this? 1JZPWRD SC 400/300 9 06-28-14 12:33 PM
IL WTB: Throttle Body Assy GS300 99 sidehide 2Gen GS430 / 400/ 300 Classifieds (98-05) 15 01-25-14 05:34 PM
what is this mysterious rubber cap? zman32 GS - Second Generation 2 01-20-14 04:27 AM
CA FS: 98-05 GS300 Throttle Body (parts or repair) ElitistK 2Gen GS430 / 400/ 300 Classifieds (98-05) 5 06-09-13 12:38 PM
Excessive Blowby? houndcomp Performance & Maintenance 4 06-04-13 06:53 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 12:37 PM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info