6G Celicas Forums

Welcome Guest ( Log In | Register )

> Idle Stability/Vacuum WTF????, Little insight here please
post Nov 12, 2012 - 7:17 PM
+Quote Post
bsamps4

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


--------------------
 
Start new topic
Replies
post Nov 14, 2012 - 11:03 PM
+Quote Post
enderswift



Enthusiast
*****
Joined Jul 12, '08
Currently Offline

Reputation: 5 (100%)




Check the map sensor. My idle went to crap after I accidentally cracked the hose nipple. A little jb weld and the problem was fixed. If I remember correctly you have an FCD wired into it. I'd check that too.

It would explain why this only appears when your car is warmed up (it enters closed loop). Plus your guage is showing 20inhg, which is the same vacuum I get. So a leak isn't very likely.

Also it would take a lot for both bolts to loosen on the distributor, not to mention for it to then vibrate out of alignment without some kind of noticeable oil leak. However crazier things have happened so checking cant hurt

This post has been edited by enderswift: Nov 14, 2012 - 11:05 PM


--------------------

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



Lo-Fi Version Time is now: July 24th, 2025 - 12:28 PM