3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

crappy boost pattern...still high idle

Thread Tools
 
Search this Thread
 
Old 08-30-06, 03:44 PM
  #1  
Rotary Enthusiast

Thread Starter
iTrader: (4)
 
supraturbo1987's Avatar
 
Join Date: Sep 2003
Location: Yutan, Nebraska
Posts: 982
Likes: 0
Received 0 Likes on 0 Posts
crappy boost pattern...still high idle

Okay, well, if anyone has been following my ordeal, I have had a rough idle and a high idle. I just got a new boost gauge hooked up and I was barely hitting 6psi. Found a coupler on one of the IC pipes was trashed and sliced, so I replaced it, and also added a valve in place of the stock pills. I have adjusted the valve so I can't go over 10psi when both turbos are boosting. Here is the pattern: 7/8ish-5/6ish-9

Something is screwed. I sometimes can get the car to idle after driving at 850rpm. Usually, when I am driving and get on the off-ramp of the interstate and put it in neutral, rpms drop and stay at about 2k...if i tap the gas...It will go to about 1500...if I sit and turn the headlights on or just wait a little, the lowest it will go is about 1200...WTF. Then, if I wait about 5-10 minutes, I can go start it and it will idle at about 850RPM...but rough...like the motor is vibrating/shaking a decent amount. If I turn the AC blow on to the 1st level, it will idle at about 1000 and be relatively very smooth as far as idle and the shaking seems to be barely there...

I checked voltage on the TPS and it is in spec. Is this the work of the fast idle cam? I can't find any other issues as far as vac leaks. On idle, the car is at 16-18psi of vac. motor has 25k on it.

Trev

Last edited by supraturbo1987; 08-30-06 at 03:49 PM.
Old 08-30-06, 04:18 PM
  #2  
2/4 wheel cornering fiend

 
Kento's Avatar
 
Join Date: Nov 2002
Location: Pasadena, CA
Posts: 3,090
Likes: 0
Received 3 Likes on 3 Posts
It sounds to me like you've still got a small vacuum/boost leak somewhere. If you've thoroughly checked all couplers and piping, you might try spraying some contact cleaner around the LIM gasket area.
Old 08-30-06, 04:21 PM
  #3  
Rotary Freak

iTrader: (24)
 
AzEKnightz's Avatar
 
Join Date: Apr 2005
Location: California, SF
Posts: 2,488
Likes: 0
Received 7 Likes on 5 Posts
did you also adjusted ur air adjustment screw on the top of the tps? That might help.
Old 08-30-06, 04:21 PM
  #4  
Rotary Freak

 
mad_7tist's Avatar
 
Join Date: Jan 2004
Location: tampa
Posts: 1,899
Likes: 0
Received 0 Likes on 0 Posts
+1 on the vac leak

Last edited by mad_7tist; 08-30-06 at 04:39 PM.
Old 08-30-06, 04:33 PM
  #5  
Rotary Enthusiast

Thread Starter
iTrader: (4)
 
supraturbo1987's Avatar
 
Join Date: Sep 2003
Location: Yutan, Nebraska
Posts: 982
Likes: 0
Received 0 Likes on 0 Posts
on top of the TPS? You mean under the elbow? Yes, nothing really changes. Talked with Luis at rotary reliability and he says do a compression test and rule that out, then for on. That is what is next then.

Trev
Old 08-30-06, 09:20 PM
  #6  
Rotary Enthusiast

Thread Starter
iTrader: (4)
 
supraturbo1987's Avatar
 
Join Date: Sep 2003
Location: Yutan, Nebraska
Posts: 982
Likes: 0
Received 0 Likes on 0 Posts
bump
Old 08-30-06, 09:42 PM
  #7  
Mr. Links

iTrader: (1)
 
Mahjik's Avatar
 
Join Date: Aug 2001
Location: Kansas City, MO
Posts: 27,595
Received 40 Likes on 26 Posts
Originally Posted by supraturbo1987
Talked with Luis at rotary reliability and he says do a compression test and rule that out, then for on. That is what is next then.
Yep, I would at least rule that out next.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Skeese
Adaptronic Engine Mgmt - AUS
65
03-28-17 03:30 PM
stickmantijuana
Microtech
30
04-23-16 06:37 PM
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM



Quick Reply: crappy boost pattern...still high idle



All times are GMT -5. The time now is 06:55 AM.