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Old 11-30-2013   #302
Schrade
 
Join Date: Dec 2012
Location: NC
Posts: 1,783
Default Re: TOP END REFINISHING

Quote:
Originally Posted by XfireZ51 View Post
Mike,

Yes I know about setting the TPS v, but that is affected by the Min Air adjustment. You need to get the throttle blade opening correct before you can set the idle TPS voltage properly. It's an iterative process.
Turn the key ON, then pull the IAC CONNECTOR. This should block the IAC port to the throttle body. Then start the motor. Does it idle, and if so at what RPM?
If it's too high, you need to close the throttle blades till you reach the desired idle speed. You actually set it a bit lower so you get some IAC control over the idle. Whenever you adjust the throttle blade, need to re-check TPS voltage and adjust if necessary so it is below the idle voltage threshold. Otherwise, ECM won't use the correct Spark Timing and you end up w an idle hunt.
Got it there Dominic; will start there in the AM. I was tentative about playing with that, to be able to reverse any adjustment.

Y/T - best I could do this time... I need to change DM window font...
http://www.youtube.com/watch?v=J_9VApesl_o


Quote:
Originally Posted by Z06scentair View Post
Sounds good have you had it on the street yet? Curious how the auto will do in the car?
Auto runs fine Z06, although I can by no means rule out EMI interefence in this hesitation diagnostic issue. SOME circuit 'sings', in sync with TPS range of motion - best I can describe THAT. I can catch that in a vid too, but if anyone can make anything of it, I'll be HAPPILY surprised...


Quote:
Originally Posted by mike100 View Post
All you need to do is make sure your TPS is set to the indicated voltage at zero percent opening (about .54v if i recall). The IAC counts are probably 0 if it can't make it run slower than 1k rpm.

you either had a line pop off during reinstallation (or a mistake in tube routing), or your throttle body blade redo got messed up a little. Just seems like too much air. maybe you should double check the throttle angle and not the electrics.
Understood Mike; DM does indicate 0% TB opening, but again, Min Idle adjustment might come before TO % confirmation.

Last edited by Schrade; 12-01-2013 at 12:02 AM.
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