thanks for the feedback...
the good thing is that no problemo with idling.
But stepper value is 0 always. After cleaning TB & induction box, my car maintains 900rpm no A/C. 300-400rpm on A/C & no fluctuate, fortunately. I'll just attempt clean stepper motor later on see any good results.

perdana one is same with FTO? 63mm?

perdana is 60mm.

no offence bro, for a TB, i think better spend on a new one rather than a recon one. recon ones already cost that much, might as well spend a lil bit more on a new.

New 1 alone will be twice the amount....

then u might want to use FICD (or FCID?) to stabilize ur car idling when a/c on

wira new VDO still can get in a range of 600-700.

Thats for VDO, not Mitsubishi ones

hi triads418,

I'm driving proton wira1.5 manual year 2000 car. I change the entire new genuine Throttle Body since last week. According the mech in the proton service shop, he said the proton 1st version that have fuel injection function (1998 ~ 2000) proton car always cannot solve the RPM problem. Those 2001 ~ onwards can try to solve by clean and servicing by TB gear kits.

i spend Rm980++ for new TB tuning and labour cost.

My problem is RPM drop until 500 if aircorn pump is run. If without air corn pump run the RPM is ok. When RPM drop to 500 whole car shaking like earth quake.

Hope this can forever solve this problem coz my car already almost 8 years and hope can drive another 8 years. But so far the 1st week now my car can feel good . Still have just abit shaking and plan to change 1 set new mounting to resolve the problem later.

Hmmm...he said can't solve the bad idling with air cond on?
Like that we changed to genuine new TB also useless?

What I usually recommend for all Proton throttle body '"Earthquake' problem; buy 1no used Toyota air-cond adjustable/ATC, drill & tap a hole at inlet manifold, hook-up the vacuum pipe & problem all solve FOREVER. Can set whatever idling rpm you want.

I had installed Toyota FICD, but my rpm still drops when air cond on

dun need to drill hole lah...

Better-lol, after BOCOR-BOCOR rpm too high pulak.

hi....
i do owned a perdana 16V model & its been 10 year......
now my car got a problem like wat u all mentioned above,
which is throttle body problem, always "earthquake" when da car is idling or halt....
sometimes it even when stalled....
consulted several workshop.....these wat i tried.....

been changed many time those tiny gears which fitted inside TB.....
they're wont last long......then changed whole TB wit recond set.......
after 3 month, problem start to occured......
fedup with same thing.....straightaway get brand new TB from proton.....guess wat?
it costed RM1.2K for a new 1.......after used 1 year.....its back again....

then decided to try other workshop,

first thing, they said it was spark plug worn out so changed it....eventually it solved...
after 2-3 month....problem arise again....changed another brand new set plug...
after 2-3 month...same thing again....

went bac that workshop, check again.....detected 1 of the 4 plug cable not working properly....
replaced new set of plug cable.....as it come only whole set not separate....
then thought it was settled down......barely 1 week......same problem again....
but it wasn't that worst till stalled,still drive-able....

now i began noticed, below TB there is area got several electronic cable attached/connect to TB...
that area fully wet with dark oil......is that sign happened to u all proton car?
b4 this it that area are dry not wet......

This post has been edited by Klemann C: Aug 16 2008, 12:35 AM

that's a sign that the throttle body spoilt......

so its that any possibility to fix bac TB witout change whole TB??
coz this TB i juz used not more than 2 year....

full service and clean your TB

how much to do TB cleaning?...
im using waja 1.6 A 2002...
never done TB cleaining since bought...
where i suppose to send my car for cleaning purpose?

Just make the mods as I've explain 'aboved', cost less than $300, after that non of those fellas with the problem ever come back again.

thats the ISC cable.... inside ISC is the gears and grease to lubricate it.... mayb the rubber gasket sealing that part KO adi.... grease/oil leaked out, causing wear n tear to the gears....

or another possibility, ISC cable melted due to extreme heat...