GN and T-Type Performance Enthusiasts (GNTTYPE) Forums GN and T-Type Performance Enthusiasts (GNTTYPE) Forums
This is a general site search and does not include list archives.

Go Back   GN and T-Type Performance Enthusiasts (GNTTYPE) Forums > Technical Topics > Driveability / Troubleshooting

Reply
 
Thread Tools Display Modes
  #1  
Old 04-03-2010, 03:21 PM
RABID6 RABID6 is offline
 
Join Date: Sep 2006
Posts: 1
RABID6 is on a distinguished road
Default 87 T-Type coughing issues under boost

Hello,

I recently developed a problem with my Buick and was wondering if anybody could help me out or indicate if they have had the same problem.

On launch and under boost during 1st and 2nd gear, my car seems to cough. It makes the sound like a popping noise, almost like an air hose has blown off the engine. When this happens, I get knock and the computer pulls the timing. However, when I keep my foot in it, the car works through the coughing and pulls hard. I seem to think I'm getting false knock and that the intermittent "popping" sound is coincidental to the false knock. Anyway, my car only acts this way on initial boost up but when I'm in final gear, it pulls hard and doesn't cough at full throttle.

The second issue is that even after I replaced the O2 sensor with a new one, at wide open throttle, my 02 voltage is lower than normal. I dont know why this is.

I'm running 110 octane racing fuel with 60 lb. injectors, Walboro 340 fuel pump, and 24psi of boost. The chip is a turbo tweak chip with 27 / 23 degrees of timing. Again, this problem is only happening while I'm accelerating from a slow roll or from the stopped position and doesn't occur in final gear at WOT.

Any help would be appreciated. Thanks.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 02:59 AM.


This page maintained by: gnttype-webmaster@gnttype.org

The content, images, text and multimedia displayed and contributed by the members of the Grand National and T-Type Performance Enthusiasts Organization are Copyright ©1996-2005. No part, section, image, article or whole of this site may be reposted or redisplayed without permission of the author/contributor and/or the Grand National and T-Type Performance Enthusiasts Organization.

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.