how to remove cold idle from q45 tb?

Discuss the RB20, RB25 and RB26 series engines.
captainclutchkick
Posts: 96
Joined: Wed May 24, 2006 11:43 am
Car: 1990 nissan 240sx coupe with rb25det

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ive searched all over the net and most forums looking for a step by step on how to remove the cold idle and mount a q45 tb on a greddy manifold, there used to be a really informative one on the net about removing the cold idle and flipping it upside down to mount and so on and so forth but i cant find it. my car ildes like crap and i think its becuase the cold air setup is still on there and possibly some wiring issues as far as the tps goes has someone done this that can help/

btw i have a s2 rb25det


Blown240sx
Posts: 1963
Joined: Thu Apr 21, 2005 3:20 pm
Car: 1996 240sx

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well from what I know the only temperature the TB has is the coolant lines that run through it. If they are blocked off and removed then the car will run like crap on cold starts.

integra7
Posts: 122
Joined: Sun Oct 16, 2005 11:42 am
Car: 1995 Nissan 240sx

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Blown240sx wrote:well from what I know the only temperature the TB has is the coolant lines that run through it. If they are blocked off and removed then the car will run like crap on cold starts.
Incorrect. The Q45 utilizes the throttle body and coolant temperature for fast idle. The RB25 utilizes the air regulator for fast idle. So you want to remove the fast idle system from the Q45 throttle body when you use it with the greddy intake manifold.
captainclutchkick wrote:ive searched all over the net and most forums looking for a step by step on how to remove the cold idle and mount a q45 tb on a greddy manifold, there used to be a really informative one on the net about removing the cold idle and flipping it upside down to mount and so on and so forth but i cant find it. my car ildes like crap and i think its becuase the cold air setup is still on there and possibly some wiring issues as far as the tps goes has someone done this that can help/

btw i have a s2 rb25det
I posted that information before. I use the greddy intake manifold with the Q45 throttle body. You do flip it upside down. I'll post some pictures for you.

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lucky7
Posts: 1326
Joined: Tue May 03, 2005 4:31 pm
Car: 97 RB25 S14

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please do post pics. this would help me out too.

integra7
Posts: 122
Joined: Sun Oct 16, 2005 11:42 am
Car: 1995 Nissan 240sx

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lucky7 wrote:please do post pics. this would help me out too.
I thought I told you that info like 3 months ago. you didn't know what I was talking about?

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lucky7
Posts: 1326
Joined: Tue May 03, 2005 4:31 pm
Car: 97 RB25 S14

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you did. but the car is over an hour away, i dont get to visit it often. and i was EXTREMELY busy with work. i forgot.

captainclutchkick
Posts: 96
Joined: Wed May 24, 2006 11:43 am
Car: 1990 nissan 240sx coupe with rb25det

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integra7 thats the exact one i was refering to thanks a million man!

integra7
Posts: 122
Joined: Sun Oct 16, 2005 11:42 am
Car: 1995 Nissan 240sx

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haha, i just wrote it....but no problem

captainclutchkick
Posts: 96
Joined: Wed May 24, 2006 11:43 am
Car: 1990 nissan 240sx coupe with rb25det

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well there was on exactly like it then , i came across it before but lost it so thanks for the info im shure this will solve me crappy/fluctuating idle issue. to bad jgy couldnt figure it out when they did my swap

integra7
Posts: 122
Joined: Sun Oct 16, 2005 11:42 am
Car: 1995 Nissan 240sx

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not sure why my post got deleted, but here's the link to the writeup

http://forums.racebread.com/index.php?topic=1680.0

Joe
Posts: 6511
Joined: Sun Feb 09, 2003 8:29 pm
Location: Phoenix, AZ

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i did not delete your post, but for future reference, dont complain when someone posts what you write and gives you credit. who cares what forum its posted on, this is the internet. its all about furthering information not trying to get traffic to your site.

integra7
Posts: 122
Joined: Sun Oct 16, 2005 11:42 am
Car: 1995 Nissan 240sx

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he didn't actual give me credit, but I'm not concerned about the credit. We all know nico has alot of traffic, so maybe you dont care about traffic, but that is my main concern.


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