Notices
Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.

100% Meth burning up IAC Valve

Thread Tools
 
Search this Thread
 
Old Feb 5, 2008 | 05:24 AM
  #16  
deadbeatrec's Avatar
Evolved Member
iTrader: (9)
 
Joined: Jan 2005
Posts: 3,139
Likes: 0
From: Albany, NY
what does a bad IAC valve case? symptoms?
Reply
Old Feb 5, 2008 | 05:31 AM
  #17  
turboDan's Avatar
Account Disabled
iTrader: (172)
 
Joined: Nov 2003
Posts: 836
Likes: 0
Yes,it may be kit design and that could be the whole problem. Lets find out what kits people are using that are having the problem and see if it is just a design flaw and then contact kit manufactuers so that they can get it corrected. I have had a SMC kit for almost 3 years and have never had an IAC problem.The only problem that I have had is having the pump seals fail after a year or so due to using different sized jet than the kit was designed for(needed to reflash the controller for the jet I am running).Have yet to reinstall as there is snow/sand on the roads so traction is a problem with No Boost.
Reply
Old Feb 5, 2008 | 05:41 AM
  #18  
jhanksevo's Avatar
Evolved Member
20 Year Member
iTrader: (44)
 
Joined: Jul 2005
Posts: 832
Likes: 0
From: Las Vegas via Raleigh NC
from what I was told it has to do with the placement of the nozzles but im sure there are other factors. I think personally im sparying to much 50/50 mix 975cc to be exact could this be a problem
Reply
Old Feb 5, 2008 | 07:26 AM
  #19  
deadbeatrec's Avatar
Evolved Member
iTrader: (9)
 
Joined: Jan 2005
Posts: 3,139
Likes: 0
From: Albany, NY
Originally Posted by deadbeatrec
what does a bad IAC valve case? symptoms?
anyone?
Reply
Old Feb 5, 2008 | 12:10 PM
  #20  
PHIL_N_THE_EVO's Avatar
Thread Starter
Newbie
 
Joined: Jan 2008
Posts: 38
Likes: 0
From: Georgia
I used the cooling mist kit which came wo/ a check valve or flow indication. the symptoms of an bad IAC valve are constant rev above 1500rpms. the other symptom is no idle at all. you will be able to start the car while pumping the gas but it won't keep the idle. instead it will shut off or stall. this problem normally comes after 100k in mileage. So it looks like this is a pretty big problem. the other aspect I am thinking of is the tune using this stuff. it looks like we need to ensure that the atomization needs to be complete. leaky systems are probably a common deal.
Reply
Old Feb 5, 2008 | 04:14 PM
  #21  
PHIL_N_THE_EVO's Avatar
Thread Starter
Newbie
 
Joined: Jan 2008
Posts: 38
Likes: 0
From: Georgia
[IMG]<a href="http://s254.photobucket.com/albums/hh102/e8war108/?action=view&current=DSCN0406.jpg" target="_blank"><img src="http://i254.photobucket.com/albums/hh102/e8war108/DSCN0406.jpg" border="0" alt="IAC Valves"></a>[/IMG]

here is what the IAC valves look like after the damage is done. the one on the left is the stock one from an 05 evo. Notive how the nipple has been torched. the one on the right is a replacement I got from AMS about 4 months ago. I ordered to like the one on the right and notice the blk stuff on the shiny center and surrounding area. I contribute both cases to the meth. for this valve though , meth actually has to drip into the crack which shows that my system is leaky or spraying to much. In other words, it's the kit or tune.
Reply
Old Feb 5, 2008 | 04:25 PM
  #22  
spdracr's Avatar
Evolving Member
iTrader: (2)
 
Joined: Feb 2006
Posts: 495
Likes: 0
From: LA
i run 1300cc dual nozzle set up custom assembled by yours truly and i've never had this problem.... i run 100% VP M1
Reply
Old Feb 5, 2008 | 04:28 PM
  #23  
PHIL_N_THE_EVO's Avatar
Thread Starter
Newbie
 
Joined: Jan 2008
Posts: 38
Likes: 0
From: Georgia
that's the deal though. for some it is fine with other's it is a problem. do you have a check valve and what kind of fail safe and anti leak components does you kit have?
Reply
Old Feb 5, 2008 | 04:34 PM
  #24  
typac69's Avatar
Evolved Member
iTrader: (42)
 
Joined: May 2004
Posts: 538
Likes: 0
From: Earth
I run smc kit never had a problem straight meth the whole time. with over 25k with the kit installed....
Reply
Old Feb 5, 2008 | 05:38 PM
  #25  
turboDan's Avatar
Account Disabled
iTrader: (172)
 
Joined: Nov 2003
Posts: 836
Likes: 0
Originally Posted by typac69
I run smc kit never had a problem straight meth the whole time. with over 25k with the kit installed....
Yes,me too but I do know for a fact that the SMC does have a "check valve" in line to nozzle.
Reply
Old Mar 24, 2008 | 09:37 PM
  #26  
Evoryder's Avatar
Evolved Member
iTrader: (55)
 
Joined: Apr 2004
Posts: 7,383
Likes: 10
From: ☼ Florida ☼
my car just started with issues similar to the iac going bad. 100% meth user going on 3+ years straight with this car..also i think alot of people may have issues by testing their meth at idle to prime the line or see if the kit is working. I suggest at part throttle and not at idle...
Reply
Old Mar 25, 2008 | 07:27 AM
  #27  
mrdevo's Avatar
Evolved Member
iTrader: (4)
 
Joined: Apr 2004
Posts: 722
Likes: 0
From: Ct
My car started doing this last june...yes its been a while. No one was able to help me but I guess I just need to replace my IAC and that should take care of it. I can't start my car without gassing it and letting it warm up. Once it is warming up, it idles ok I guess. If I make a sudden movement at low speeds my car shuts off, so I have to be careful all the time, especially in the snow. I have had the smc kit for almost 2 years, this happening after the first.
Reply
Old Mar 25, 2008 | 07:52 AM
  #28  
caLi4G63's Avatar
Evolved Member
iTrader: (40)
 
Joined: Nov 2004
Posts: 621
Likes: 8
From: so. caLi
interesting; this is the first time i hear of this problem happening. i run 100% meth and have been running it for about half a year now and haven't noticed any problems. i guess it's a hit or miss thing as other have stated but i also believe a solenoid shut-off valve should be used, which i need to get by the way.
Reply
Old Mar 25, 2008 | 09:15 AM
  #29  
itzwolf's Avatar
Evolved Member
20 Year Member
iTrader: (9)
 
Joined: Mar 2005
Posts: 1,193
Likes: 2
From: Florida
My current IAC (when my car was running) I'd have to let it warm up sometimes in order to get it idling properly. It's gotten progressively worse and I have a replacement IAC which will be the 3rd one in the car to fix the issue. I ran meth last year just a couple times but that was with an SMC kit.

The first IAC failure (no methanol ever used) I had the car just wouldn't idle period. This one has been a slow failure that had gotten worse over the course of a month whiole my car was still up and running. Like I said a year ago I experiemented with methanol injection and had no problems and it ran fine for a while until it started to go this year.
Reply
Old Mar 25, 2008 | 09:53 AM
  #30  
mrdevo's Avatar
Evolved Member
iTrader: (4)
 
Joined: Apr 2004
Posts: 722
Likes: 0
From: Ct
Mitsu wants 433.00 for one(iac). Where can I get one for less? I think this may be my problem..
Reply



All times are GMT -7. The time now is 11:47 AM.