 Idle Stability/Vacuum WTF????, Little insight here please |
 Nov 12, 2012 - 7:17 PM
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Enthusiast  Joined May 16, '10 From Raleigh Currently Offline Reputation: 12 (100%)  |
]Check out this video. My idle bumps just like the vacuum between 550-700rpms. It does this after the car has fully warmed up. Cold start the vacuum and idle hold firm until the engine gets up to operational temperature.
Things I\'ve done: full boost leak test, and repaired the leaks I found. smoke test, and repaired the leaks I found. My question?....what else could cause this? Sticking IACV maybe???? oh yea...it\'s a 3rd gen 3sgte. Fully built...etc...most of you are probably familiar with my build. If not it\'s in the my project section. http://s1190.beta.photobucket.com/user/bsa...403873.mp4.html 
This post has been edited by bsamps4: Nov 12, 2012 - 7:18 PM --------------------  |
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Nov 14, 2012 - 11:48 PM
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 Enthusiast Joined Feb 11, '08 From Auckland, New Zealand Currently Offline Reputation: 0 (0%) |
the IACV is plenty big to run fast idle up to 2000rpm, the throttle plate should always return shut, it has a little pinhole in it for vacuum release
-------------------- Mike W
1996 Toyota Celica ST205 GT-FOUR GT2860RS turbine, TiAL mvr44, JE 86.5φ piston, Clutchmasters FX400, APEX P-FC 269awhp / 273ft-lbs |
Posts in this topic
bsamps4 Idle Stability/Vacuum WTF???? Nov 12, 2012 - 7:17 PM
delusionz yeah thats very normal, it happens from time to ti... Nov 12, 2012 - 7:32 PM bsamps4 Good advise. I will double check the timing., but ... Nov 12, 2012 - 8:02 PM MotoFoo86 With your idle that low it's no suprise it... Nov 12, 2012 - 9:47 PM bsamps4 Id love for it to idle right, but what options do ... Nov 13, 2012 - 9:23 AM Smaay for sure clean out the IAC for starters. Nov 14, 2012 - 10:08 AM bsamps4 Does the IAC affect idle even after warm up? Nov 14, 2012 - 2:52 PM enderswift Check the map sensor. My idle went to crap after I... Nov 14, 2012 - 11:03 PM delusionz thats not an idle adjustment screw, thats a thrott... Nov 14, 2012 - 11:44 PM
bsamps4 Yes, I have polyurethane mounts. I actually discon... Nov 15, 2012 - 10:45 AM |
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