Welcome to DSMtuners - The Talon, Laser, and Eclipse performance enthusiast resource
























Login


 Featured 
 Products 
 >>>>>> 
Go Back   DSMtuners > DSM Forums > 4G63 DSM Tech > Tuning & Engine Management

Tuning & Engine Management EPROMS, ECU, MAF, knock, EGT, wideband, datalogging, fuel trims, etc. Read this Forum's Strict Guidelines.

Reply
 
 
LinkBack Thread Tools
Old 06-12-2005, 11:39 AM   #1 (permalink)
Proven Member
 
From: Lenexa, Kansas
Registered: Oct 2002
Posts: 9
Classifieds Rating: (0)
Reputation: blinkin is an unknown
Random Misfire 6-Bolt Swap Question

Hey guys,
I just recently installed a 6-Bolt motor into my 1995 Eagle Talon TSI following every step and procedure necessary for a successful installation. I started the engine up and drove it around for about 10 miles with the engine running like a dream until I got a CEL and ran the codes and it showed to be the Phantom Random Misfire. The question I have is this, does the method of wiring for the CAS make a difference in the sensor reading or is one method better than the other? I used method 2 from RoadRace for my wiring. Also, I read about using a potentiometer to fix it but was wondering what possible harm that could cause and if there was any other way to fix this problem.
-Justin
Offline  

[posts] Reply With Quote
Related Auctions

Sponsored Links
Old 06-12-2005, 03:28 PM   #2 (permalink)
Proven Member
 
Registered: Sep 2003
Posts: 25
Classifieds Rating: (3)
Reputation: dan ritchie is an unknown
I haven't looked into the exact cause of the problem, but I'm guessing you used method 2 so you didn't have to invert the signal.

I would suggest looking for other ways to disable the light, because if you do ever have another problem (that thing can actually be helpful) you'll never know it.

I'm finishing up the swap myself this week, I'll see if I can find more info.
Offline  

[posts] Reply With Quote
Old 06-17-2005, 02:16 AM   #3 (permalink)
Proven Member
 
From: Bay Area, California
Region: NorCal
Registered: Nov 2002
Posts: 77
Classifieds Rating: (1)
Reputation: SpoolinGSX is an unknown
I don't know which style CAS you are running, but the ideal one to use is the 93-94 style with the black lid. It is a hall effect sensor which gives a similar signal to the 2g style sensor. This helps with the misfire problem. If it still persists you can use the potentiometer to change the barometric pressure output, which will prevent the car from setting the code. However this will change the fuel calculations. If you skew the readings for the baro sensor it will think you are either under water, or on top of some mountain, depending on the way it skews the reading. It will deliver more or less fuel because of this. If you have a means to correct that via a SAFC, MAFT, or some other fuel control device then you can probably resolve that issue. I have DSMLink, which has an option to disable the misfire monitor from running. This is the best option, but of course you need DSMLink for that.
Offline  

[posts] Reply With Quote
Old 06-17-2005, 03:34 AM   #4 (permalink)
Proven Member
 
From: Hoffman Estates, Illinois
Region: Midwest
Registered: Jun 2004
Posts: 339
Classifieds Rating: (0)
Reputation: TurboAnything is an unknown
I have had some luck with just retarding the ignition timing. the light rarely comes on and i didn't have to go to far with it.
Offline  

[posts] [gallery] Reply With Quote
Reply






Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -7. The time now is 11:47 PM.

Page generated in 0.10930800 seconds (72.69% PHP - 27.31% MySQL) with 9 queries
DSM Forums | Pontiac Solstice/Saturn Sky Forums | Evolution Forums | WRX Forums

© 2001-2008 SPEEDtuners Network, LLC All Rights Reserved

LinkBacks Enabled by vBSEO 3.1.0