high rpm problem - Mitsubishi Evolution Forums: Mitsubishi Lancer Forum
Mitsubishi Evo Forum Mitsubishi Evo Forum Header Right
 

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Mitsubishi Evolution Forums: Mitsubishi Lancer Forum > Lancer Evolution Tech Forums > Non-Performance Tech
Register Forum Active Topics (T) Gallery Auto Loans Classifieds Garage Mark Forums Read Auto EscrowInsurance Advertise

Non-Performance Tech Interior, exterior, appearance mods, lighting, alarms, car audio, etc.

EvoTuners.net is the premier Mitsubishi Evolution Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 01-01-2010, 09:13 PM   #1 (permalink)
 
Registered: Sep 2008
Posts: 2
Reputation: 4g63er is an unknown
high rpm problem

hi,
my evo3 engine has just been rebuild with engine rebore to bigger pistons.i start the engine,the rpm stays o.k but everytime i floor the clutch and take it for a ride,the rpm started to get higher & higher until reached 2500 in idle.my foreman said there were leaks in the i/c piping & leaks in i/c hoses.i repaired and replaced them but the high idle was still there.i also just cleaned the t/b and ruled out the t/b problem possibility.Can someone please help to fix this??I want my rpm to stay normal on idle.
for your info;
i'm using ogura full race clutch(it seems that everytime flooring this clutch and changing gears during ride,the high rpm happened)
safc (but not fully tuned),
a/campulley (not tuned also),
stock injectors,
stock fuel pump,
264 cam only the for the intake,
please help!!!
Offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-02-2010, 07:14 PM   #2 (permalink)
Moderator
 
Car: 03 EVO
Club Region: Mid Atlantic
Registered: Aug 2005
Posts: 1,289
Images: 7
Reputation: You can trust this leader of the site
Send a message via AIM to SicLanEvo
get rid of the safc and get it tuned via ecuflash. also your Idle air control valve either is not tuned properly. Have you done a boost leak test? this will confirm any leaks you have. Also maybe try adjusting the thorottle cable, if its too tight it will cause the car to idle high.
Offline   Reply With Quote
Old 01-03-2010, 08:17 PM   #3 (permalink)
 
Registered: Sep 2008
Posts: 2
Reputation: 4g63er is an unknown
no,i have not done any boost leak test.will look into it.a friend of mine said that maybe my car's battery is the culprit since he noticed the battery plates were faulty.can a faulty battery cause such high rpm??
Offline   Reply With Quote
 
Old 01-04-2010, 04:26 AM   #4 (permalink)
SUPER MODERATOR
 
Car: 06 EVO
Club Region: Outside North America
Registered: Dec 2008
Posts: 366
Reputation: You can trust this leader of the site
Send a message via AIM to rookhoe
Lol What?!?!?!

Is this friend a shop owner?


__________________
06 GG Evo SE

I WANNA GO FAST
Offline   Reply With Quote
Old 01-04-2010, 04:27 AM   #5 (permalink)
Moderator
 
Car: 03 EVO
Club Region: Mid Atlantic
Registered: Aug 2005
Posts: 1,289
Images: 7
Reputation: You can trust this leader of the site
Send a message via AIM to SicLanEvo
battery plate???? the battery is only needed to start the car, should not have anything to do with idle issues. boost leak test, pull the IAC and clean it, then tune the car properly with ecuflash and wideband
Offline   Reply With Quote
Old 01-04-2010, 07:09 AM   #6 (permalink)
SUPER MODERATOR
 
Car: 06 EVO
Club Region: Outside North America
Registered: Dec 2008
Posts: 366
Reputation: You can trust this leader of the site
Send a message via AIM to rookhoe
Since you cleaned the TB, does this mean that you took it off the car,disassembled it and then cleaned it? If so, when you put it back together, you may not have seated the spring properly. With this it will cause increased tension and your idle will sit at about 2500 rpm. Check that too.


__________________
06 GG Evo SE

I WANNA GO FAST
Offline   Reply With Quote
Old 01-04-2010, 10:47 AM   #7 (permalink)
Moderator
 
Car: 03 EVO
Club Region: Mid Atlantic
Registered: Aug 2005
Posts: 1,289
Images: 7
Reputation: You can trust this leader of the site
Send a message via AIM to SicLanEvo
^^ yeap did that when we did my seals. I think a professional should be looking at your car though just to make sure.
Offline   Reply With Quote
Old 01-04-2010, 12:28 PM   #8 (permalink)
SUPER MODERATOR
 
Car: 06 EVO
Club Region: Outside North America
Registered: Dec 2008
Posts: 366
Reputation: You can trust this leader of the site
Send a message via AIM to rookhoe
Im pretty positive thats the problem. As you, SicLanEvo, I also was changing my throttle body seals and cleaned the TB, and while reassembling the TB, there is a slot for the end of the spring to be seated in. I totally missed that, and when I started my car, my idle sat at around 2500 rpm and wouldnt come down past that. Easy fix, and as I said before, hopefully that is your only problem.


__________________
06 GG Evo SE

I WANNA GO FAST
Offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -8. The time now is 04:12 PM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
© 2007 AutoForums.com - EVOtuners.net - All Rights Reserved.

Powered by vBulletin®. Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.