Subject	I have similar issue and believe it to be TB related.
Posted by	Boosted1 on May 24, 2012 at 6:11 AM
	This message has been viewed 182 times.
In Reply To	Poor sealing Z1 tb's and how they effect idle control... posted by Evan_Wright (Ca) on May 23, 2012 at 09:01 PM
Message	My first set of Z1 TBs were garbage. I bought second set that were newer, improved version. From the outside they look much better and the plate doesn't stick, but the plate doesn't seal like stock either. So my theory is same as yours. My idle "hunts" after I lift throttle. Once it has time to settle into idle it will idle fine, but it takes a few up/down cycles for the idle control system to stabilize. When I get some time, I will install my stockers that RobZ enlarged to 54mm and see if it fixes the issue.
Follow Ups	Poor sealing Z1 tb's and how they effect idle control... - Evan_Wright (Ca) 21:01:01 05/23/12 Does it surge more when cold, and smooth out when warmed up? - BoneZ (MD) 21:34:16 05/23/12 Tps sits at .38 volts and shows closed tps "on". I can't - Evan_Wright (Ca) 22:02:20 05/23/12 And when the engines cold it does surge pretty - Evan_Wright (Ca) 22:03:34 05/23/12 Unfortunately I swapped out the entire upper plenum which - BoneZ (MD) 22:16:24 05/23/12 Re: And when the engines cold it does surge pretty - WazTTed 15:51:46 05/24/12 You might have to grind a bit of the plastic tab away - Stadsport (PHX) 02:26:08 05/24/12 I've all ready slotted my tps and grinded some plastic away. - Evan_Wright (Ca) 08:03:55 05/24/12 Have you tried to set TPS between 0.4V and 0.5V? - jschrauwen 08:52:36 05/24/12 I can and have had it at around .42 volts but honestly in - Evan_Wright (Ca) 11:01:54 05/24/12 Re: Poor sealing Z1 tb's and how they effect idle control... - MaxxAction 23:00:55 05/23/12 Yes, I sync'd them before dropping the motor in. (n/m) - Evan_Wright (Ca) 23:17:51 05/23/12 Re: Poor sealing Z1 tb's and how they effect idle control... - MaxxAction 23:05:34 05/23/12 Re: Poor sealing Z1 tb's and how they effect idle control... - Stadsport (PHX) 02:22:59 05/24/12 Yes, I've tried going up and down on the percentages and - Evan_Wright (Ca) 07:57:05 05/24/12 Then I agree with you on both points/ideas - Stadsport (PHX) 13:41:46 05/24/12 Yes I have. I actually did it a second time before - Evan_Wright (Ca) 14:13:46 05/24/12 Re: Then I agree with you on both points/ideas - MaxxAction 19:03:32 05/24/12 I have similar issue and believe it to be TB related. - Boosted1 06:11:58 05/24/12 Additionally, my TPS idle voltage is at 0.45 volts - Boosted1 06:15:50 05/24/12 Are you running 2.5" Intake Piping? - jschrauwen 08:57:35 05/24/12 NEGATIVE. Do NOT restrict the hose to the IACV - the - Ash's Z 09:38:52 05/24/12 You've got mail :-) (n/m) - ConVerTT 09:42:15 05/24/12 FALSE!!! It is "pull" not "push" at idle .... - ConVerTT 09:41:29 05/24/12 Re: FALSE!!! It is "pull" not "push" at idle .... - jschrauwen 11:15:01 05/24/12 Do you not realize your advice is not wanted here? - Aqualung 14:57:30 05/24/12 Re: Do you not realize your advice is not wanted here? - ZPHILE 22:16:52 05/24/12 your sig is too long - Adam (NoVA) 12:48:58 05/25/12
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