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#1
11-11-2006, 11:55 AM
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wierd idle...
ok so i nocticed this today ...
when the car is in idle the rpms will drop from 1k to about 800 every 5 secs its not a very rough idle but u can feel it , when it goes down and up again. duno wut this could be -im running on 3 new front plugs and 3 old back ones NKG -i put in a fuel systems cleaner like 2 days ago into my current tank. if that helps 
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#2
11-11-2006, 01:05 PM
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Re: wierd idle...
probably dirty IAC. Do a search, you'll find plenty of threads. Normal idle should be a steady 700rpms. Also swap all 6 plugs, don't be lazy.
__________________
96 3000gt vr4 -K&N FIPK -Proboost mbc -Cusco front + rear strut bars -Greddy type-s -ATR downpipe -no cats -15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly. Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical.
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#3
11-11-2006, 08:38 PM
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Re: wierd idle...
Quote:
normal idle 700rpms mines is more like 900 - 1k
__________________
1995 mitsubishi 3000gt Base Model - working on her 
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#5
11-11-2006, 10:41 PM
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Re: wierd idle...
how will u clean the IAC? pressurized air? is there like a guide thxs.
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1995 mitsubishi 3000gt Base Model - working on her
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#6
11-11-2006, 11:38 PM
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Re: wierd idle...
Quote:
http://stealth316.com/2-isc-iac.htm
__________________
93 3000GT base K&N | long tube headers | 3sx crank pulley| testpipe | Addco front/rear sway bars (3SX) | rear strut bar & front 3-point strut bar (by JonVr4 on 3Si) | solid motor mounts | LSD insert | KYB GR-2 struts | intrax springs | adj. control arms | ss brake lines | 16% taller 5th gear (teamrip.com) | H4 conversion | push-button start | datalogger | HKS S-AFR | PLX WB O2 coming soon: adj. cam gears | bi-xenon HID retrofit
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#7
11-11-2006, 11:41 PM
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Re: wierd idle...
1) Remove MAS
2) Get some electrical contact cleaner (wal-mart/autozone) 3) Spray away on the IAC/MAS electrical wire. Don't be afraid to spray 4 or 5 short bursts to drench it. Be sure to do both sides. 4) DO NOT touch the wire with ANYTHING! You will ruin your MAS. Hope you have better luck than I did. If this doesn't fix the problem, you may need a new MAS.
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#8
11-12-2006, 07:36 PM
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Re: wierd idle...
ok so i check today and now my idle stays STILL right under the 1(not even 900)
but sometimes will go up
__________________
1995 mitsubishi 3000gt Base Model - working on her
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#9
11-12-2006, 08:23 PM
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Re: wierd idle...
yea I have the exact same problem. Runs like sh** one day and runs great the next. I still haven't figured out what the problem is yet, but right now I would say it's your MAS.
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#10
11-13-2006, 12:29 PM
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Re: wierd idle...
so is it the MAS or the IAC?
__________________
1995 mitsubishi 3000gt Base Model - working on her
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#11
11-13-2006, 01:36 PM
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Re: wierd idle...
I beleive their integrated circuits.
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#12
11-13-2006, 01:57 PM
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Re: wierd idle...
The MAS and IAC are completely different parts of the car.
__________________
A few "bolt on" mods, a couple "cut, smash, hammer, weld, etc" mods, and a couple "why the hell do I need this/what the hell is this" weight reductions.
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#13
11-13-2006, 02:55 PM
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Re: wierd idle...
I understand that but I guess I'm missing something. I keep hearing that the MAS and IAC on a 3000gt are combined. If they aren't then I would like the know where the IAC is.
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#14
11-13-2006, 03:25 PM
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Re: wierd idle...
Quote:
Forget the MAS for the time being and focus on teh IAC. Check the link provided in post 6.
__________________
96 3000gt vr4 -K&N FIPK -Proboost mbc -Cusco front + rear strut bars -Greddy type-s -ATR downpipe -no cats -15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly. Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical.
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#15
11-14-2006, 03:13 PM
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Re: wierd idle...
Alright I was confused. I read the post, went to my car and followed the removal steps. Althought I couldn't remove the entire thing (it's in the manifold pretty good.) I took out the 3 screws and just disassembled that peice. I cleaned it, took it for a drive... it ran like crap. This morning I started her up, and it ran great... so I dunno if this is the end to my problem (the CEL went away too). But yea, miami, listen to igovert and read the link on post 6 if you haven't already, because it may help you.
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