LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

EGR simulator schematics ?

Thread Tools
 
Search this Thread
 
Old Mar 15, 2005 | 04:20 PM
  #1  
trax's Avatar
Thread Starter
Registered User
 
Joined: May 2002
Posts: 611
From: Chicago 'burbs
Question EGR simulator schematics ?

I ran across a couple of posts talking about building OBD2 EGR simulators, but I haven't had much luck actually finding schematics. I've seen a couple descriptions saying:

Unplug the 2 wire weatherpak going to the EGR solenoid, and splice it onto a relay.

From the other side of the relay:
--Splice one wire to the rear of the MAP
--Splice the other wire to the middle using a 75 ohm resistor.
I'm not very good with electronics, but does this require a DPST solenoid? I'm not seeing how this can be done with SPST.
Old Mar 15, 2005 | 05:30 PM
  #2  
Raped Ape's Avatar
Registered User
 
Joined: Jan 2001
Posts: 37
From: The Jungle
Re: EGR simulator schematics ?

Check your email. Someone had given me a schematic a while back, but I never got around to it. Good luck. Let me know if it works out for you.
Old Mar 15, 2005 | 07:03 PM
  #3  
trax's Avatar
Thread Starter
Registered User
 
Joined: May 2002
Posts: 611
From: Chicago 'burbs
Re: EGR simulator schematics ?

Thanks!

I wired it up and reset the codes on my car. Interesting observation: EGR, O2's, and Heated O2's no longer show up as "ready". The PCM isn't throwing a code though either. I'm wondering if it's because I didn't let the car have a complete cold start... hmm...

I'll have updates tomorrow.
Old Mar 15, 2005 | 07:47 PM
  #4  
jchevy's Avatar
Registered User
 
Joined: Oct 2000
Posts: 1,531
From: Tucson, AZ
Re: EGR simulator schematics ?

I wired this up on my car. For me it worked around town, but i would still get the code on long highway drives. I finally just deleted it from the PCM.
Old Mar 16, 2005 | 05:56 PM
  #5  
trax's Avatar
Thread Starter
Registered User
 
Joined: May 2002
Posts: 611
From: Chicago 'burbs
Re: EGR simulator schematics ?

Ok guys, update. I cleared the PCM and drove 25+ miles (including a bit of cruising on I-90) without any problems. I used a slightly different resistor (68 Ohms, available at Radio Shack) with no problems. Also, the EGR readiness monitor showed up as "ready".

Old Mar 16, 2005 | 07:04 PM
  #6  
Raped Ape's Avatar
Registered User
 
Joined: Jan 2001
Posts: 37
From: The Jungle
Re: EGR simulator schematics ?

Sent you a pm trax.
Old Mar 6, 2007 | 07:09 PM
  #7  
trax's Avatar
Thread Starter
Registered User
 
Joined: May 2002
Posts: 611
From: Chicago 'burbs
2 year bump! lol

Raped Ape sent me a copy a while back, but now that I need them again I can't find the file. Anyone else have a copy?

Thanks!
Old Mar 7, 2007 | 01:03 AM
  #8  
trax's Avatar
Thread Starter
Registered User
 
Joined: May 2002
Posts: 611
From: Chicago 'burbs
Well, I made this one from memory. Let me know if it needs any corrections.

Old Mar 12, 2007 | 09:01 PM
  #9  
trax's Avatar
Thread Starter
Registered User
 
Joined: May 2002
Posts: 611
From: Chicago 'burbs
Bump... any comments?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
marlar98
LT1 Based Engine Tech
10
Oct 21, 2015 02:02 PM
sleeperZ96BT
Parts For Sale
5
Sep 9, 2015 08:28 AM
MDZ28
LT1 Based Engine Tech
7
Sep 7, 2015 09:16 PM
Pwilson59
South Atlantic
1
Sep 3, 2015 08:47 PM
Jlo
Parts For Sale
1
Jul 29, 2015 03:52 PM




All times are GMT -5. The time now is 07:29 PM.