High idle when rolling
09-11-2012, 12:26 PM
#1
High idle when rolling I recently attended a tuning school and my car was the guinea pig. My mods are all supporting bolt ons and a cam the guys at the school had a field referring to as princess cut LOL (216-220 dur. .525-.534 lift on 114°LSA). The tune made 353 at the rear wheels, so I am quite happy for my work beater, but I don't have a stall so at red lights it tries to lurch a little so I just pop it into neutral. Don't mind doing that but the idle shoots up to about 1300rpm until the speedometer hits 0mph at it then idles down to kemal with the usual nice lumpy 750rpm. I think it has to do with the speedometer because if I left it idle in gear and let of the brake it starts to creep up in speed until it hits about 7mph and the rpms shoot up and it will do 20mph. If nobody can help without my tune file I will try to figure out how to attach once my computer is handy.
09-13-2012, 05:36 AM
#6
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Was your throttle blade moved or the hole drilled bigger? You can't go negative - that table should not be zeroed. If that is zeroed, then you are left with desired airflow table for control - but, that effects idle all of the time, even after you are stopped. Something is amiss... What tuning school did you attend? I guess they let your guinea pig leave without the idle being correct...
09-13-2012, 07:34 AM
#7
Take a screen shoot of your scanner showing the problem, set up the chart & the table beside one another. I guessing you are using HPT, BLK02WS6 is not so he cannot see what is going on even if you post your tune.
Here is an example. This a little Drag dyno so it's not the correct parameters for your problem.
Here is an example. This a little Drag dyno so it's not the correct parameters for your problem.
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09-13-2012, 11:54 AM
#8
I attended thetuningschool.com out of Florida. It was supposed to be a begginer class but , by coincidence, was a few seasoned tuners there from other already established shops and one of the guys did some tuning beyond what the class was discussing while there was on going irrelevant questions from some of the other students. Ther guy that made the changes was actually there to teach the ford SCT class the following days. I am by no means saying he shouldn't have, but I have to figure this out. I will try to figure out the scan and post thing in a few days when I get back in town. Sorry for my steep learning curve.(ignorance)
Last edited by codyvette; 09-13-2012 at 12:04 PM.
09-14-2012, 08:28 PM
#10
actually The tuningschool was the *#$@ . For the money I learned an *** load. It was a great time and I would do it a million over. This was done by another visitor to the school and I still appreciate what he did. There is more than one way to skin any cat. Bob @ the tuning school has been great and I will take there advanced class when I go as far as I can on my own. It did not make me a master tuner but it did let make me able to do a lot of research on my own. This problem has been solved by bob and me. Thanks to all who have been helpful on my issue. Hope you all get to haul tons of ***.
09-15-2012, 12:33 AM
#13
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Cody....was this the one that was assembled from "leftover" parts? The one that was trailered to the dyno? If so, I remember ya! lol That car sounded pretty sweet for what it was...as I recall it kinda surprised you with what it put down. If you don't mind, could you PM me with details of how you and Bob solved the issue?
-James-
-James-
Last edited by salemetro; 09-15-2012 at 12:44 AM.
09-15-2012, 11:22 AM
#15
Cody....was this the one that was assembled from "leftover" parts? The one that was trailered to the dyno? If so, I remember ya! lol That car sounded pretty sweet for what it was...as I recall it kinda surprised you with what it put down. If you don't mind, could you PM me with details of how you and Bob solved the issue?
-James-
-James-
09-15-2012, 11:49 AM
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yes sir, I was very happy with the dyno sheet. Peak numbers were not so much my focus, as was curve. My brother has the same mods in the same car less the cam. I knew it should be a win fron a 55 roll but it was more like a slaying. The "Princess cut" cam pulls like I never thought it would.
