Low idle rpm with ac on itb - 4age20v map

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levin (levin) 2013-06-26 16:17:39 +0500 #1

With itb installed 20v holds idle at 800 rpm. If we remove itb black box and install horns. How do send air pressure level at intake to idle speed up valve for ac use? The vaccum is connected at bottom of box for idle speed up valve. I drilled a hole in adaptor for itb for air pressure but it picks air from one itb only , and gives wrong air reading to valve result is idling at 500 with ac reading. The mechanic last year did some trick to shut off ac compressor at 1000 rpm. This wasn't a great idea but idling was ok. How to shut compressor off at 800- 1000 rpm?

levin (levin) 2013-06-26 16:21:48 +0500 #2

stock setup .. . vaccumm connector on box

SER_GTR (SER_GTR) 2013-06-26 16:35:18 +0500 #3

Some People Cheat The Idle Via Diff Ways......Dig In Club4ag and you will surely have answers....!

Lots Of People have same Issue

levin (levin) 2013-06-27 01:47:15 +0500 #4

@ser gtr you meant this page? Club4AG Forum Topics: HELP: Need a picture of under the ITBs, VACUUM

levin (levin) 2013-06-27 17:15:49 +0500 #5

In interesting update worth sharring. The 20v has common vacuum rail behind itbs. the idle speed up valve goes to top of rail and can put a filter on bottom . I will try this and let know what comes as result

SER_GTR (SER_GTR) 2013-06-27 17:20:38 +0500 #6

Sure...!

levin (levin) 2013-06-28 07:38:10 +0500 #7

I made a print out for mechanic to fit pipes like this. the bracket is removed for rwd setup,.. Now to get hold of mechanic..is next problem

levin (levin) 2013-07-01 11:14:31 +0500 #8

Is it possible to wash ISC. Its difficult to open this control located almost under dist in rwd. have to reach it from underside of engine

levin (levin) 2013-07-22 15:28:58 +0500 #9

I found part of the problem. during engine swap two years back, mechanic told me ac bracket has 4 bolts and one is broken in block, that wont matter ,, but that broke belts in following months, replaced ac compressor but didn't solve the problem, went to Islamabad broke belt, happened twice. replaced back another rotary ac , after one month again broke belt.. today after investigation, went under car, remove power pulley, and all, found out ac bracket has 5 bolts. I got 3 broken bolts removed by welding bolts on them and fit back all 5 .. task took 7 hours due to no electric for 2 hours .. even the engine mount bolt was getting loose from vibrations, now all bolts proper tighten, fit back everything car is running much better.

levin (levin) 2013-07-22 15:41:26 +0500 #10

the connection between bolts and idling , ac wasn't proper mounted and making problems during engine idle,, furthermore I still need to clean ISC for better response