Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > General Tech Talk

Thread Title
throttle body question

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 10-26-2011, 09:15 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
throttle body question

well i have been having idle problems so i decided to clean my throttle body.

so after i scrubbed it out i noticed that when i turn the throttle lever it moves completely smoothly till right before it closes completely and i feel a little slight resistance. is it possible that this could be my problem (holding the plate slightly open causing my idle to rise). i doesn't feel right....kinda like the sides of the throttle plate are rubbing on the inner walls of the throttle body
Reply With Quote
  #2 (permalink)  
Old 10-26-2011, 09:30 PM
Phantom240's Avatar
Platinum Member

 
Join Date: May 2010
Location: Slidell, LA
Posts: 2,388
iTrader: (3)
Phantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond repute
Re: throttle body question

Remove the throttle cable and see if it continues.
__________________
Quote:
Originally Posted by bykfixer View Post
it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
Reply With Quote
  #3 (permalink)  
Old 10-27-2011, 10:55 AM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

yes i already took it off the intake manifold. but the resistance is very very slight. i just thought that it should be perfectly smooth so it seems odd
Reply With Quote
  #4 (permalink)  
Old 10-27-2011, 10:57 AM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: throttle body question

yea you gotta diagnose whether its the cable or throttle plate, cuz both of them could potentially stick.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #5 (permalink)  
Old 10-27-2011, 11:40 AM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

its already off the cable so it has to be the throttle body right?

do i need to get a new one?
Reply With Quote
  #6 (permalink)  
Old 10-27-2011, 11:47 AM
Phantom240's Avatar
Platinum Member

 
Join Date: May 2010
Location: Slidell, LA
Posts: 2,388
iTrader: (3)
Phantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond repute
Re: throttle body question

Is there any scarring or galling in the throttle body that may be impeding the movement of the plate?
__________________
Quote:
Originally Posted by bykfixer View Post
it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
Reply With Quote
  #7 (permalink)  
Old 10-27-2011, 12:02 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

no it looks pretty smooth. i just cleaned it out really good and its still doing it.....but its very slight, i only notice it if i open and close it slowly.
Reply With Quote
  #8 (permalink)  
Old 10-27-2011, 12:10 PM
Junior Member
 
Join Date: Dec 2010
Location: st louis, mo
Posts: 61
iTrader: (0)
rickles8099 is on a distinguished road
Re: throttle body question

sounds like your idle screw has been loosened. when the idle screw is unscrewed too much, the butterfly in the throttle body will rub on the throttle body causing it to rub. it will also not allow any air to bypass and cause your idle to be too low. your idle air control valve will then try to adjust for the loss of air and may get to the point of your idle pulsating up and down and your car not idling.
Reply With Quote
  #9 (permalink)  
Old 10-27-2011, 12:11 PM
Phantom240's Avatar
Platinum Member

 
Join Date: May 2010
Location: Slidell, LA
Posts: 2,388
iTrader: (3)
Phantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond reputePhantom240 has a reputation beyond repute
Re: throttle body question

Never heard of that. Interesting bit of info though.
__________________
Quote:
Originally Posted by bykfixer View Post
it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
Reply With Quote
  #10 (permalink)  
Old 10-27-2011, 12:19 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

ok so how do i know were my idle screw is supposed to be? considering my throttle body is already off the car?
Reply With Quote
  #11 (permalink)  
Old 10-27-2011, 12:29 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

just a little note -

before this my normal idle was very irregular, moving around in the 500-1000 Rpm's range. i am also changing my TPS sensor because a mechanic thought that could be the problem.
Reply With Quote
  #12 (permalink)  
Old 10-27-2011, 12:32 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

Quote:
Originally Posted by rickles8099 View Post
sounds like your idle screw has been loosened. when the idle screw is unscrewed too much, the butterfly in the throttle body will rub on the throttle body causing it to rub. it will also not allow any air to bypass and cause your idle to be too low. your idle air control valve will then try to adjust for the loss of air and may get to the point of your idle pulsating up and down and your car not idling.
i just checked it and my idle screw is tightened all the way in???
Reply With Quote
  #13 (permalink)  
Old 10-27-2011, 12:40 PM
Junior Member
 
Join Date: Dec 2010
Location: st louis, mo
Posts: 61
iTrader: (0)
rickles8099 is on a distinguished road
Re: throttle body question

Quote:
Originally Posted by ledheadmatt10 View Post
ok so how do i know were my idle screw is supposed to be? considering my throttle body is already off the car?
my bad... i should have noted. theres two screws that adjusts idle. one is located on the top of your throttle body and the other is located on the side just under the lever that your throttle cable connects to. (side effects of being at work and trying to focus on work while posting.)

Quote:
Originally Posted by ledheadmatt10 View Post
i just checked it and my idle screw is tightened all the way in???
if youre talking about the one on the top, its not suposed to be screwdd in all the way, and if youre talking about the one on the side, to adjust it you need to loosen the lock nut. and if its tightened all the way in, your car will be idline well over 2000 rpms.
Reply With Quote
  #14 (permalink)  
Old 10-27-2011, 12:49 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: throttle body question

the one on the side has a glop of yellow paint on it (im assuming they did this at the factory so it wouldn't get adjusted) so i think that is were its supposed to be

and yes, the screw at the top was screwed all the way in.

previous to taking the throttle body off, my idle would randomly move around 500-1000 RPM's

on another note-
i just tried to calibrate my new TPS sensor and i could not get the specified .5 closed and 4.5 open. i could only get like .6-.7 closed and 4.6-4.7 open. im gonna guess this is because my throttle screw but idk

looks like i have some adjusting to do...were do i start
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Throttle Body Question trantommyd 5th Gen Honda Prelude 9 07-15-2011 09:35 PM
throttle body question cody 5th Gen Honda Prelude 0 06-15-2009 12:17 PM
Throttle body 97grnLude 5th Gen Honda Prelude 5 05-01-2009 12:39 PM
Throttle Body for an H23? BlackH23 4th Gen Honda Prelude 4 12-01-2007 04:18 AM


All times are GMT -4. The time now is 02:19 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.