2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

How To Remove S5 MOP Without Throwing Codes? Device To Emulate It?

Thread Tools
 
Search this Thread
 
Old 06-02-07, 09:34 PM
  #1  
version 2.0

Thread Starter
iTrader: (17)
 
texFCturboII's Avatar
 
Join Date: Mar 2007
Location: Fort Worth, TX
Posts: 3,590
Received 1 Like on 1 Post
How To Remove S5 MOP Without Throwing Codes? Device To Emulate It?

OK, I've heard that it is not possible to remove the OMP from my 89 TII since it's electric and the ECU has to see it there. I've read the archives, and it is mentioned; but I want to see if anyone has had ANY success at tricking the ECU with some resistors in circuit? My OMP is out, and I have it mostly removed; but the damn CEL keeps throwing every 11 minutes and limping the girl out.... Is there any solution to this?
Old 06-02-07, 10:57 PM
  #2  
Rotary $ > AMG $

iTrader: (7)
 
jackhild59's Avatar
 
Join Date: Apr 2005
Location: And the horse he rode in on...
Posts: 3,783
Received 24 Likes on 23 Posts
Originally Posted by texFCturboII
OK, I've heard that it is not possible to remove the OMP from my 89 TII since it's electric and the ECU has to see it there. I've read the archives, and it is mentioned; but I want to see if anyone has had ANY success at tricking the ECU with some resistors in circuit? My OMP is out, and I have it mostly removed; but the damn CEL keeps throwing every 11 minutes and limping the girl out.... Is there any solution to this?
I have heard of people leaving the old omp hooked up to the wiring but not hooked up to the oil lines. This lets the ECU thihk it is working.
Old 06-03-07, 12:40 AM
  #3  
Former Moderator. RIP Icemark.
 
Icemark's Avatar
 
Join Date: Apr 2001
Location: Rohnert Park CA
Posts: 25,896
Likes: 0
Received 19 Likes on 19 Posts
there is a lot more involved that just a resistor. There is a position sensor and flow controller that needs to be adapted.
Old 06-03-07, 01:00 AM
  #4  
Senior Member

 
Henrik's Avatar
 
Join Date: Mar 2001
Location: Vancouver
Posts: 429
Likes: 0
Received 0 Likes on 0 Posts
Its a fairly complicated feedback control loop. I've solved it for S5 NA, S5 TII is in the works. This involves chipping the ECU to remove the code related to OMP operation. Visit www.pocketlogger.com for details

-Henrik
Old 06-03-07, 03:14 AM
  #5  
spending too much money..

iTrader: (2)
 
hondahater's Avatar
 
Join Date: Dec 2002
Location: louisiana
Posts: 10,117
Likes: 0
Received 1 Like on 1 Post
Damn you've come quite a ways since I last heard. I owned the rtek 1.7 and loved it. but back then you only had it for the s4tII, glad to see your going to be selling to everyone now! Congrats on the great "creative engineering"
Old 06-03-07, 10:18 AM
  #6  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes on 91 Posts
Originally Posted by texFCturboII
OK, I've heard that it is not possible to remove the OMP from my 89 TII since it's electric and the ECU has to see it there. I've read the archives, and it is mentioned; but I want to see if anyone has had ANY success at tricking the ECU with some resistors in circuit? My OMP is out, and I have it mostly removed; but the damn CEL keeps throwing every 11 minutes and limping the girl out.... Is there any solution to this?
Fundamentally easy to do for anyone familiar with microcontroller circuits. Datalog the inputs and outputs to the pump, and program a microcontroller to emulate them.

No one has bothered though since used parts are available as a cheap replacement.
Old 06-03-07, 10:49 AM
  #7  
HAILERS

 
HAILERS's Avatar
 
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes on 19 Posts
LIke HENRIK said, Pocketlogger MAKES a cure for the removal of the OMP on a series FIVE. It's been on the market for almost a year.
Old 06-03-07, 01:38 PM
  #8  
version 2.0

Thread Starter
iTrader: (17)
 
texFCturboII's Avatar
 
Join Date: Mar 2007
Location: Fort Worth, TX
Posts: 3,590
Received 1 Like on 1 Post
Thanks alot fellas! That's step two once I get the water pump replaced!
Hooray for RX-7's and their constant tuning!!!!
Old 06-03-07, 01:45 PM
  #9  
version 2.0

Thread Starter
iTrader: (17)
 
texFCturboII's Avatar
 
Join Date: Mar 2007
Location: Fort Worth, TX
Posts: 3,590
Received 1 Like on 1 Post
But wait a second.... I'm not an electrical engineer.... Guess I've just got to wiat for Henrik, or get a new OMP. Anyone have one for a s5 TII sittin around for sale?
Old 06-03-07, 03:10 PM
  #10  
HAILERS

 
HAILERS's Avatar
 
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes on 19 Posts
Originally Posted by texFCturboII
But wait a second.... I'm not an electrical engineer.... Guess I've just got to wiat for Henrik, or get a new OMP. Anyone have one for a s5 TII sittin around for sale?

Henrik collaborates with PocketLogger at : http://pocketlogger.com/?pid=rtek7&t...age=1&ecu=S5NA


Wait a minute, the shot collaborators after the second WW, didn't they? humor
Old 06-03-07, 07:34 PM
  #11  
version 2.0

Thread Starter
iTrader: (17)
 
texFCturboII's Avatar
 
Join Date: Mar 2007
Location: Fort Worth, TX
Posts: 3,590
Received 1 Like on 1 Post
right, right, i saw that. But Iv'e got a TII..... is this going to work if it specifies N/A?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SakeBomb Garage
SakeBomb Garage
9
05-11-20 10:04 AM
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
SakeBomb Garage
Group Buy & Product Dev. FD RX-7
8
10-09-15 10:05 PM
ZacMan
Build Threads
4
09-19-15 09:20 PM
yetter227
2nd Generation Specific (1986-1992)
20
09-05-15 11:57 PM



Quick Reply: How To Remove S5 MOP Without Throwing Codes? Device To Emulate It?



All times are GMT -5. The time now is 10:17 PM.