 93 gsx misfire, need help 93 gsx |
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 Jan 10 2007, 03:54 PM
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#1
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Beginner  Group: Members Posts: 47 Joined: 2-December 05 From: Washington, IL Member No.: 738  |
ok my friend has a 93 gsx and it is upgraded bigger turbo, fmic, s-afc. the other day we were doing some cleaning up of wires on the inside of the car afc wiring and removed indiglo guages. but when we got done doing that we took it for a ride to make shure everything was working correctly. every thing was fine then we decided to take it back to the shop and put it on the lift to check everything under it. when we took it back off the lift went to leave the shop and something was wrong. kept on creeping up to being rich and idled high when you would take off just as you start to get into boost it starts stumbling. but once it gets boost built up it takes of like nothing is wrong untill you stop and it does the same thing. any help i could get would be very helpfull.
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Jan 10 2007, 04:09 PM
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#2
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DSMCentral Godfather Group: Admin Posts: 3,823 Joined: 10-January 01 From: Washburn Member No.: 26 |
This is like dejavu! I'll try a different apoach this time.
Have you checked it for boost leaks? I can imagine a gap in the piping or intercooler that releases a lot of the incoming air, until the 'big' turbo gets cranking hard enough to build enough pressure for the engine to seem normal. It's just a thought and for this to happen it would have to be a gap that does not increase with boost. Otherwise the theory for this diagnosis will not hold water. This happened to me when I blew out one end of my FMIC. The turbo could still build like 5 psi even with a huge gaping hole in the intercooler. -------------------- In Loving memory of David T Crebo
Greatness comes from the most unexpected places!  |
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Jan 11 2007, 08:07 AM
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#3
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 Post Master Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182 |
Does the AFC still show the Hz? My first thought was that the air flow wire came lose in the AFC harness.
-------------------- GVR4 866/1000 = the perpetually broken car
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Jan 11 2007, 02:54 PM
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#4
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
How many times has this been posted? My delete finger is getting itchy...
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Jan 11 2007, 11:14 PM
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#5
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Beginner Group: Members Posts: 47 Joined: 2-December 05 From: Washington, IL Member No.: 738 |
all wires to the afc have been checked and reconnected and it is showwing 0% throttle all the time so i was thinking mabee throttle position sensor
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Jan 11 2007, 11:51 PM
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#6
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 Post Master Group: Members Posts: 729 Joined: 19-September 02 From: New Baden, IL Member No.: 7 |
QUOTE (Spyonu2007 @ Jan 11 2007, 05:51 PM) man, word for word... I went down on my wife the other day... I said, Geeze this a big kitty... Geeze this is a big kitty! She said, why did you say that twice? I said, I didnt.  AH HAHAHAHAHAHAHAHAIt's great to have you back  have you back -------------------- -The original (member) 007. Stop looking at me Spy!!
-98 S-10 P/U creepin' low on stock 15s!! -You come off just a little more intelligent if you know how to spell the insults in addition to saying them |
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