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

A race: Be the first to analyze a datalog!

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Old Jun 21, 2007 | 03:43 PM
  #1  
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A race: Be the first to analyze a datalog!

Finally took the car for its first run,been a long wait.Car runs okay but not right.the idle will not idle at the taget of 800 always higher and erratic.maybe iac possibly?when slowing to a stop it doesnt want to drop down to targeted idle.throttle stop screw is backed out so thats not it.there are two 1/4 inch holes drilled in the throttle blades to get it to idle without them the iac maxes and it wont stay running.fuel psi is 43 with vac line off psi regulator,slightly lower with it on.Car is very rich as you can see by the O2 sensors.Please take a look and point out any problems you see,I dont want to run this thing if it isnt right.Mail order from alvin,mods in sig Does anyone know his email I"d like him to take a look also maybe needs a retune? Links in csv and uni format.thanks anyone
http://www.yourfilehost.com/media.ph...6trial_run.uni
http://www.yourfilehost.com/media.ph...2First_run.csv
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Last edited by jonlil77; Jun 21, 2007 at 08:05 PM.
Old Jun 21, 2007 | 04:07 PM
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i probably wouldn't know what i was looking at anyway. but, the links do not work for me...
Old Jun 21, 2007 | 05:53 PM
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404 file not found
Old Jun 21, 2007 | 07:19 PM
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fixed links dont know what happened

http://www.yourfilehost.com/media.ph...6trial_run.uni
http://www.yourfilehost.com/media.ph...2First_run.csv
Old Jun 21, 2007 | 07:29 PM
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Originally Posted by jonlil77
Finally took the car for its first run,been a long wait.Car runs okay but not right.the idle will not idle at the taget of 800 always higher and erratic.maybe iac possibly?when slowing to a stop it doesnt want to drop down to targeted idle.throttle stop screw is backed out so thats not it.there are two 1/4 inch holes drilled in the throttle blades to get it to idle without them the iac maxes and it wont stay running.
So you backed the throttle stop screw all the way out... and it wouldnt stay running... so you drilled holes in the throttle blades to get it running and now it idles high? why didnt you screw the throttle stop screw in a little bit more to crack open the blades a bit? you should be able to put a peice of paper in the throttle body between the blades and the housing and when you pull it it should come out with only a little resistance. If the throttle stop is all the way out it won't idle because of that.


fuel psi is 43 with vac line off psi regulator,slightly lower with it on.Car is very rich as you can see by the O2 sensors.Please take a look and point out any problems you see,I dont want to run this thing if it isnt right.Mail order from alvin,mods in sig Does anyone know his email I"d like him to take a look also maybe needs a retune? Links in csv and uni format.thanks anyone
.http://www.yourfilehost.com/media.ph...=First_run.csv or http://www.yourfilehost.com/media.ph...=trial_run.uni
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Old Jun 21, 2007 | 07:38 PM
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Wtf!!!
Old Jun 21, 2007 | 08:15 PM
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tbody stop screw

I tried to get it to idle that way but, the tps voltage was way high by screwing the stop screw in and the iac counts were maxed out at 160,wouldnt idle hence the holes some people seem to have that prob with the holley
Old Jun 21, 2007 | 08:27 PM
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Originally Posted by jonlil77
I tried to get it to idle that way but, the tps voltage was way high by screwing the stop screw in and the iac counts were maxed out at 160,wouldnt idle hence the holes some people seem to have that prob with the holley
You probably need to spend some time working the idle air passage over, make sure theres no casting flash plugging it and make sure the bores are smooth too.
Old Jun 22, 2007 | 02:55 PM
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Stern counts

I'll have to take a look at the iac passages but if i remember right when i bought it i looked at them and didnt notice them to be messed up,looked nice and smooth in there,but did anybody notice the Sterm counts at 1?
Old Jun 23, 2007 | 12:02 PM
  #10  
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All I get from the link is a screen that allows me to copy the file link, which is what was already used to access the screen in the first place. I've never had any luck with that site.

Technically, the stuff it links too might be questionable under board policy. Might want to try another service.
Old Jun 23, 2007 | 02:51 PM
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DOWNLOAD
2582FIRST_RUN.CSV
FROM OUR DEDICATED SERVER

"Right click - save as" on the words above will allow you to download the file.
Old Jun 25, 2007 | 05:36 PM
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ttt

ttt
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