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

Help with odd CRV behavior

Old Apr 23, 2019 | 12:42 PM
  #1  
E55AMG's Avatar
Thread Starter
Full Member
Tenured Member 20 Years
 
Joined: Sep 2002
Posts: 51
Likes: 2
From: Westerville, OH
Help with odd CRV behavior

My boost pattern is 10-8-5. Key off I initially tried to blow through the CRV and it was open (air passed through). I turn the key on and the Charge Control Actuator pulls in but the CRV closes and does not pass air. I turn the key off and the CRV remains closed. So, I should conclude that the vacuum storage is good, but the Charge Control Solenoid is bad or the plumbing is wrong?
Reply
Old Apr 23, 2019 | 03:19 PM
  #2  
cr-rex's Avatar
half ass 2 or whole ass 1
Tenured Member 10 Years
iTrader: (114)
 
Joined: Nov 2011
Posts: 3,425
Likes: 489
From: okinawa to tampa
You are on the right path. The default position of the crv when running is open so that secondary boost pressure is vented. The only time it should close is when commanded when the cross over happens. Engine off, the crv should be closed.....





I think =D
Reply
Old Apr 24, 2019 | 12:50 PM
  #3  
DaleClark's Avatar
RX-7 Bad Ass
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (56)
 
Joined: Jan 2002
Posts: 15,622
Likes: 2,725
From: Pensacola, FL
I'm not sure if the CRV will close with engine off. I think it's fed vacuum from the vacuum tank and the solenoid at rest is feeding it vacuum.

It's worth checking to see if the pressure and vacuum tanks are holding with the car off. If not you could have a bad check valve or a leaky vacuum hose.

Dale
Reply
Old Apr 24, 2019 | 02:41 PM
  #4  
E55AMG's Avatar
Thread Starter
Full Member
Tenured Member 20 Years
 
Joined: Sep 2002
Posts: 51
Likes: 2
From: Westerville, OH
Thanks all. It seems that the wastegate and pre-control connectors were reversed. I just purchased the car. It didn't have either connector marked, but I swapped them and it now has full boost after 4500 RPM. The idle is much smoother too?

The issue now is that boost is spiking at the transition. Always something...
Reply
Old Apr 25, 2019 | 08:11 AM
  #5  
moehler's Avatar
Rotary Freak
Tenured Member: 20 Years
Liked
iTrader: (12)
 
Joined: Mar 2003
Posts: 2,319
Likes: 32
From: South Jersey
A closed CRV could cause a spike at the transition. It should remain open until the transition.
Reply
Old Apr 25, 2019 | 08:31 AM
  #6  
E55AMG's Avatar
Thread Starter
Full Member
Tenured Member 20 Years
 
Joined: Sep 2002
Posts: 51
Likes: 2
From: Westerville, OH
Maybe. There are no cats, so I'm guessing it's just the open exhaust.
Reply
Old Apr 25, 2019 | 08:52 PM
  #7  
cr-rex's Avatar
half ass 2 or whole ass 1
Tenured Member 10 Years
iTrader: (114)
 
Joined: Nov 2011
Posts: 3,425
Likes: 489
From: okinawa to tampa
Excellent... glad you you got it sorted. Yes, the lack of any restrictions in the exhaust will greatly contribute to your boost spike. If you get the magnaflow unit from rx7store it should help fix that
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
NorthernForestMotorsports
Race Car Tech
44
Sep 23, 2015 07:18 PM
Ehron
1st Generation Specific (1979-1985)
6
Jun 7, 2004 06:26 AM
dhahlen
3rd Generation Specific (1993-2002)
8
Mar 11, 2004 08:50 PM
mjw
3rd Generation Specific (1993-2002)
6
Mar 8, 2002 03:30 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:10 AM.