mod wira throttle body, using vacum instead of ISC gear
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 May 11 2011, 04:11 PM
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#1
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana  
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need to know whats ur mechanic ingenious method of using vacuum to solve the problem... there is alot of method that utilizes vacuum effect...
my throttle body running without ISC... totally blocked off using aluminum plate... using ficd now... runs well no problem whatsoever... |
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May 11 2011, 06:10 PM
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#2
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(sinister_sid @ May 11 2011, 04:49 PM) i tot u use 2 ficd 1 control aircond, another control cold start  |
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May 12 2011, 01:49 AM
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#3
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(shen1716 @ May 11 2011, 08:36 PM) My problem was fixed after replace the isc gear..i thk the method said by my mechanic look like catacomb method...not using isc gear anymore and replace by ficd..bro catacomb,may i know wat the pros and cons using this method? most mechanic will remain the "dead" ISC component there but fix an ficd to solve the problem... well, this method does not 100% solve the problem because ur ISC might still go crazy because the ISC socket is still connected to it... it will still constantly self-adjusting itself to the changes of intake vacuum (because u use ficd, intake vacuum pressure fluctuates whenever aircond kicks in)... in such condition, ur ecu will continuously try to adjust the vacuum pressure via the dead or semi-dead ISC motor... in long run, ur ecu might also get damaged...hence, it is safe to completely remove the ISC unit and disconnect the ISC socket and totally rely on the ficd unit... not sure if engine check light will lit up or not after disconnecting ur ISC socket... i think it can be solved via PDT reset fault.... my car dont have engine check light coz convert from carburetor to fuel injection...  QUOTE(gagak_84 @ May 11 2011, 10:02 PM) Can show the diagram? err... dun have diagram ler... vr simple connection... ficd only has 2 wire... signal and ground... signal wire u connect to 12vdc and den to an external switch mounted inside ur car... switch is den grounded... this creates a complete circuitry... as for the hose connection, 1 is in and another is out... intake path i left it open (or u can install a breather there), while the output path is tapped to the second ficd (which controls the aircond) output path, which both will eventually connected to the intake manifold... so when coldstart ur engine revs drop or gets lumpy, just switch the ficd on and adjust ur coldstart idling rev at the ficd... its that simple... |
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May 12 2011, 02:17 PM
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#4
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(gagak_84 @ May 12 2011, 09:31 AM) ok.. i just want to know the hose connection... this is ok for MAP right? no AFS. yeap... i'm using it on MAP system...i guess when people say it increases fuel consumption, reduce power and so on, it happens on engines running MAF system... because the MAF detects how much air passing through it... if u bypass the air and directly enters the intake manifold, that amount of air will not be detected by the MAF sensor... |
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May 12 2011, 02:44 PM
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#5
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(gagak_84 @ May 12 2011, 02:37 PM) ok.. but i dont think MAF can used two FICD, unless u can add 1 more T hose at the intake..after AFS.. 1 go for air cond control, and 1 for cold start control. if add the hose at intake after MAF sensor before throttle body, it defeats the purpose during idling rite??... coz when idling, throttle body will be shut close... there is no engine vacuum to suck in air to bring up the idling rpm...QUOTE(chickenriceboy @ May 12 2011, 02:37 PM) i use both ficd and isc ..no problem good la... congratulations... |
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May 12 2011, 09:21 PM
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#6
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(gagak_84 @ May 12 2011, 06:50 PM)  i add the hose at intake after AFS.. sometime during cold start.. FICD suck the air and u feel that the engine loss of the power (happen only after i drive during cold start ).. but after that i kan lenjan kaw2.. no affect at all.. huhuhu.. minor only..  |
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May 13 2011, 02:09 AM
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#7
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(gagak_84 @ May 12 2011, 09:34 PM) Before. Anyway, do u know the function the hose on top of throttle body? Small hose, vaccum kot? Function? the 3 vacuum ports labeled P, E, A??... not sure though... but it is connected to the canister purge... mine dont seem to function anyway... hahaha.... |
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May 26 2011, 04:31 AM
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#8
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Senior Member
10,975 posts Joined: Jan 2003 From: disini disana
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QUOTE(demomode @ May 25 2011, 09:36 AM) mine also using 2 ficd. 1 control idling & 1 for aircon. so far running good, huh??.. 1st one control idling a/c off??... 2nd one control idling a/c on??...but idling when cold start is damn low. anyone got any solutions? btw mine is mivec throttle body. there is a plastic knob at ur throttle body which controls the idling a/c off mahh... why u need external help??... |
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