Wednesday, September 01, 2010

throttle body block plate...

i'm sure many drivers using fuel injection engine do had some difficulties with unstable rpm whenever the aircond kicks in... this is because the ISC (idle stepper control) unit which is located below the throttle body has damaged... particularly for MMC engines, the ISC unit breaks down frequently and it is expensive to service in long run... ISC repair kit can be bought from spare part shop... it consist of a few plastic gears inside the ISC unit...



however, this does not solve the melting problem of the ISC chip because it rests on the hot coolant hose running at the bottom of the throttle body...



hence, they came up with this alternative solution...





it blocks the coolant passage in the throttle body... means u no longer run coolant into the throttle body as it is deemed unnecessary in hot tropical countries... the plastic ISC chip remains and it activates the stepper function whenever aircond kicks in... the disadvantage is, at Rm150 per unit it is rather expensive and it is still made of plastic and it does melt or damage sooner or later...

one more solution which always been mechanic's recommendation is to use Toyota AE101 FICD (fast idle control device)... this electrically actuated valve can be adjusted to allow any given amount of air leaked into the engine to bring up the engine revs up to desired speed...



on my current setup, i have 2 units of FICD to control the aircond idle revs and cold start idle revs individually... with this, the ISC unit can be removed all together...

i had some spare aluminum plate lying around left over from my FYP project... took out my old throttle body, removed the ISC unit and did some measurement...



sent the measurement and the aluminum plate to machine shop and this is what it came back...



i made a paper gasket to properly seal it air-tight... i also swapped the notoriously-difficult-to-remove screws and had them replaced with allen key screws...

11 Comments:

Anonymous AhHei said...

wah, u straight away take out the ISC wor? why dun wan to try my way?

8:23 PM  
Blogger SkYwAlKeR said...

dowan dowan.. i got 2 FICD adi... no need ur way jor...

8:34 PM  
Anonymous Anonymous said...

before this i only know about one ficd place on a car...can u please show me the other one that control cold start idle..i'm really excited bout this...

10:00 PM  
Anonymous Godwin said...

wer can i get this

12:53 AM  
Blogger ninest123 said...

ninest123 16.01
tiffany jewelry, nike outlet, burberry, tiffany and co, longchamp outlet, replica watches, ugg boots, prada outlet, tory burch outlet, nike free, louboutin, michael kors outlet, oakley sunglasses, ray ban sunglasses, longchamp outlet, polo ralph lauren outlet, louboutin shoes, christian louboutin outlet, ugg boots, ugg boots, louis vuitton, polo ralph lauren outlet, longchamp, louis vuitton, oakley sunglasses, louis vuitton, burberry outlet online, louis vuitton outlet, ugg boots, oakley sunglasses, ray ban sunglasses, louboutin outlet, uggs on sale, michael kors outlet, chanel handbags, cheap oakley sunglasses, jordan shoes, ray ban sunglasses, michael kors, oakley sunglasses, michael kors outlet, prada handbags, gucci outlet, louis vuitton outlet, replica watches, nike air max, michael kors outlet, michael kors outlet, nike air max

12:57 PM  
Blogger ninest123 said...

lululemon, hermes, lacoste pas cher, longchamp, true religion jeans, sac guess, mulberry, nike blazer, coach outlet, hollister, coach purses, vans pas cher, tn pas cher, michael kors, sac longchamp, nike free, nike roshe run, converse pas cher, michael kors, nike trainers, ray ban pas cher, timberland, nike huarache, ralph lauren pas cher, new balance pas cher, oakley pas cher, nike air max, air force, burberry, vanessa bruno, nike air max, louboutin pas cher, ray ban uk, nike air max, true religion jeans, air max, michael kors, nike free run uk, north face, michael kors, longchamp pas cher, ralph lauren uk, north face, true religion outlet, true religion jeans, hollister pas cher, abercrombie and fitch, replica handbags, nike roshe, hogan, air jordan pas cher

1:00 PM  
Blogger ninest123 said...

wedding dresses, chi flat iron, insanity workout, ralph lauren, babyliss, birkin bag, ray ban, nike roshe, louboutin, celine handbags, s5 cases, bottega veneta, hollister, p90x workout, mac cosmetics, new balance, iphone cases, mcm handbags, reebok shoes, beats by dre, herve leger, ipad cases, ghd, vans shoes, ferragamo shoes, hollister, iphone 5s cases, valentino shoes, vans, abercrombie and fitch, lululemon, nike air max, timberland boots, gucci, oakley, soccer jerseys, north face outlet, iphone 6s plus cases, instyler, soccer shoes, nike air max, iphone 6 cases, asics running shoes, north face outlet, converse, iphone 6s cases, giuseppe zanotti, nfl jerseys, iphone 6 plus cases, mont blanc, jimmy choo shoes, baseball bats

1:02 PM  
Blogger ninest123 said...

links of london, marc jacobs, juicy couture outlet, ugg,ugg australia,ugg italia, ugg,uggs,uggs canada, moncler, toms shoes, barbour jackets, swarovski crystal, louis vuitton, canada goose, louis vuitton, thomas sabo, converse outlet, canada goose outlet, barbour, wedding dresses, sac louis vuitton pas cher, juicy couture outlet, ugg boots uk, coach outlet, canada goose uk, moncler, canada goose outlet, moncler outlet, moncler, replica watches, doudoune canada goose, hollister, swarovski, ugg pas cher, pandora charms, bottes ugg, louis vuitton, moncler, montre pas cher, canada goose, moncler, doke gabbana outlet, pandora charms, louis vuitton, canada goose, moncler, moncler, canada goose, pandora jewelry, pandora jewelry, lancel, karen millen, supra shoes
ninest123 16.01

1:05 PM  
Blogger Unknown said...

jianbin0924
louis vuitton
rolex watches for sale
chrome hearts outlet
louis vuitton sunglasses for women
hollister sale
soccer jerseys
fitflops sale
ferragamo shoes
ralph lauren outlet
mont blanc pens

5:00 PM  
Blogger Unknown said...

jianbin0224
ferragamo outlet
supra shoes
christian louboutin
christian louboutin uk
cheap oakley sunglasses
ecco shoes
louis vuitton
true religion outlet
fitflops uk
hermes birkin

5:16 PM  
Anonymous Anonymous said...

Hi OP.. can u advise me how to put another ficd for cold start idle as u mentioned on your post.?

2:11 PM  

Post a Comment

<< Home