Nissan/Infiniti Tech SR20DET? RB26DETT? VQ35DE? What's it all mean? Find out here!

NEED HELP! rb25det high idle

Old Apr 15, 2010 | 06:21 AM
  #11 (permalink)  
David48's Avatar
I <3 usdm
 
Joined: Feb 2009
Posts: 3,170
Likes: 0
Default

Originally Posted by NeedCAforS13
When's the last time you pulled an IACV on an RB25 David? Right...


OP, double check that the throttle plate is fully closed and that the throttle cable can fully extend. I had an SR that the throttle was being held open slightly and it took me forever to figure out why it was idling so high. Make sure the screw behind the throttle plate allows it to close all the way as well.
I can't imagine it being too hard. =/ Anyway, my idle was at 3K RPM for the longest time until I figured out that the throttle cable was stuck on something like NeedCa's.
__________________
Potato

Originally Posted by whattadobo
People fucking suck, I'm selling my car and buying a treefort.
Originally Posted by osama tim laden
shit got all davided up.
Reply
Old Apr 15, 2010 | 06:25 AM
  #12 (permalink)  
Z28ricer's Avatar
Doesnt see what you did
 
Joined: Sep 2007
Posts: 3,683
Likes: 0
Default

Maybe nissans with screw adjuster IAC's do that, but guess what lots of "gasoline engines" are most certainly RPM+CTS linked for idle.


Originally Posted by greenman100
NO.

Gasoline engine rpms are solely dependent on how much air is getting into the intake manifold.

High idle is ALWAYS a vac/intake manifold gasket leak and/or malfunctioning IACV. Period.

Not timing.
Not CTS.
Not TPS.

Your CTS is just there to richen the mixture when the engine is cold.

Thanks for playing.
Reply
Old Apr 15, 2010 | 07:35 AM
  #13 (permalink)  
4wheeldriftS13's Avatar
February - Ride of the Month
 
Joined: Apr 2005
Posts: 7,141
Likes: 0
Default

Originally Posted by NeedCAforS13
When's the last time you pulled an IACV on an RB25 David? Right...
HAHAHHAA

Originally Posted by David48
I can't imagine it being too hard.
But I cant imagine you being able to do this by yourself.
__________________

RIP Tim Aldrich
"..watch this cool documentary on bums racing shopping carts downhill, and making a living off of selling bottles. living the dream."

Reply
Old Apr 15, 2010 | 09:38 AM
  #14 (permalink)  
AWD4g63's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 400
Likes: 0
Default

The throttle plate is definately closed all the way. That was onE of the first things i checked. And I'm about to go pull the iacv off and clean it. I'm hoping that works because I'm not looking forward to tracking down an electrical issue lol
__________________

Skyvia - The Best of Both Worlds
Reply
Old Apr 15, 2010 | 12:09 PM
  #15 (permalink)  
AWD4g63's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 400
Likes: 0
Default

i pulled and cleaned the iacv thingy (pretty easy with this isis plenum lol) it was pretty nasty in there. put it back on and adjusted the idle screw on it and it made a small difference. and then i got nosey and pinched off the vacuum hoses going to the iacv. if i pinch off the one coking directly fromthe intake plenum the car dies completely. and if i pinch off the one coming from the intercooler pipe it just idles down alott. does this mean the aac motor is bad? or that i might have a stealth vacuum leak...
__________________

Skyvia - The Best of Both Worlds
Reply
Old Apr 15, 2010 | 12:37 PM
  #16 (permalink)  
AWD4g63's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 400
Likes: 0
Default

and this is a pic of my tps. should the open plug have wires running to it? i was told you only have to hook that up on auto cars. but idk if that is correct or not
__________________

Skyvia - The Best of Both Worlds
Reply
Old Apr 15, 2010 | 01:43 PM
  #17 (permalink)  
Sileighty_85's Avatar
SR20 FREAK
 
Joined: Nov 2008
Posts: 118
Likes: 0
Default

Which TB are you using? Q45? if so you need to either run coolant lines throught the TB or remove the High Idle crap on it.
__________________
Reply
Old Apr 26, 2010 | 10:09 AM
  #18 (permalink)  
AWD4g63's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 400
Likes: 0
Default

idk what tb it has. havent really looked into it much. how would i go about removing the idle stuff on it if it is a q45? i also figured out i have a series 2 ecu on a series 1 engine. is this an issue? and whats a good safe boost level to run on stock ecu/injectors. its about 8 now.
__________________

Skyvia - The Best of Both Worlds
Reply
Old Apr 26, 2010 | 12:22 PM
  #19 (permalink)  
David48's Avatar
I <3 usdm
 
Joined: Feb 2009
Posts: 3,170
Likes: 0
Default

tb=Throttle body
__________________
Potato

Originally Posted by whattadobo
People fucking suck, I'm selling my car and buying a treefort.
Originally Posted by osama tim laden
shit got all davided up.
Reply
Old Apr 26, 2010 | 12:24 PM
  #20 (permalink)  
AWD4g63's Avatar
Thread Starter
Registered User
 
Joined: Jul 2009
Posts: 400
Likes: 0
Default

really????? no shit dude everybody knows that

Originally Posted by David48
tb=Throttle body
__________________

Skyvia - The Best of Both Worlds
Reply


All times are GMT -8. The time now is 10:52 PM.