shreveport/bossier hang out!
07-11-2012, 02:44 AM
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SO....I read this great tuning book. It recommended (for internally modded NA engines) to give the car a few degrees more timing in the idle region and limit the over/under speed spark adjustment for a more stable idle. FAILURE. The car wouldn't even idle without your foot on the gas. No surging, but wouldn't run on its own. I tried adding Idle airflow and that did nothing. I put those back the way they were (stock except for Idle Airflow), babied it for about 30 seconds and it was idling on its own. 
07-11-2012, 01:41 PM
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07-11-2012, 04:50 PM
SO....I read this great tuning book. It recommended (for internally modded NA engines) to give the car a few degrees more timing in the idle region and limit the over/under speed spark adjustment for a more stable idle. FAILURE. The car wouldn't even idle without your foot on the gas. No surging, but wouldn't run on its own. I tried adding Idle airflow and that did nothing. I put those back the way they were (stock except for Idle Airflow), babied it for about 30 seconds and it was idling on its own.
07-11-2012, 10:47 PM
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It works....just have to get the air flow right. Either by IAC or Throttle body adjustment. You can gradually make it less. Set the Over to -4 and Under 2 and see what that does. Then try -2 and 2....then try -2 and 0.
07-12-2012, 01:26 AM
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TB was completely closed (from what i could tell) which would prolly explain why it wouldn't run without my foot on the gas. It has a set screw, I can open it some and do a TPS relearn and that should do better eh?
07-12-2012, 05:41 AM
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A good read for those who like 4 wheelers and such, I don't feel like reposting it over here.
http://www.planetlsx.com/forums/showthread.php?t=5679
http://www.planetlsx.com/forums/showthread.php?t=5679
07-12-2012, 07:27 AM
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Yep, opening the throttle body blade should take car of it for you. No need to do the TPS relearn though......you might open it all of 3%....so, it doesn't affect your tuning.
