Weak idling during cold start

**silver_corolla** · January 17th, 2005 02:12 PM

Originally Posted by yenners81

Silver_Corolla,

I had a 1990 Corolla 1.6GL before (the orig 16 valves). I'm not sure if you have the same car. Anyway, I had a similar problem. When I turn on the aircon, the RPM drops to a very low level and makes the engine vibrate wildly. The culprit was a defective actuator that is responsible for pulling up the idling. I think it's a pneumatic device that works with vacuum/pressure of the hoses connected to the carb. This part costs around 3K+ then in the 95's. I got it from a Banawe shop. forgot which one.

I'm sure the part you are looking for can be found elsewhere aside from the casa. I think one of the big importers of orig toyota parts is Celica Motors at Araneta Ave corner Palanza St Q.C. You might want look them up and give them a call.

Hi yenners81,

Actually yan din ang naging findings ng mekaniko ko before, may problema ACTUATOR SWITCH ko kaya pinalitan ko ng brand new ACTUATOR SWITCH. Kaya OK na ulit sya. Kaya lang lately nga bumalik na naman ang problema nya, mababa ulit ang RPM nya. Kaya positive na ang mechanic ko na ACTUATOR SWITCH nga ang ugat ng problema.

Anyway, may mabibili kaya akong brand new carb sa CELICA? May contact numbers ka ba?

Thanks,
Pete

**silver_corolla** · January 17th, 2005 02:21 PM

Originally Posted by the_wildthing

4A-GE na ang katapat nyan sir...

Hehe joke lang.

What happens if you do a manual choke when the engine is cold?

we'll do. Thanks.

**cfatchma** · May 8th, 2007 12:30 AM

Every morning i have this exp. normally when i start the engine, nasa 600 to 700rpm. then when i switch on the ac w/o preheating the engine, it drops to 400 w/c cause engine vibrate. so what i did was, preheat the engine for about 3 to 5 mins then b4 switching the ac on, try to press the gas pedal 2x or 3x to 2000 for about 3 to 5 sec. then to 3000 rpm another 3 to 5 sec on the 2nd press. Then hold the gas pedal to 3000rpm on the 3rd press, switch on the aircon then release the gas pedal. Idle will now normalize. saken kc pinaset ko ng 1000rpm idle w/ac.

Hope it works for you.

BTW Ive also exp. nung nagpalit ako ng actuator switch and carb overhaul, ganon paren naman, The ac specialist kuno try to rearrange the hoses connecting the actuator to the engine pero ganon paren.. hehehe... kaya pagdting ko s bahay binalik ko s dati and then napagisip isip ko kc na... considering the old skul type, its normal to exp this prob. kaya ayun binomba ko ng binomba yung gas pedal 1 morning and shooOt.. prob solve for the section.

**arnarn** · July 22nd, 2009 05:09 PM

hi masters, question po... sira na kasi yung autochoke ng pizza ko kaya nasa 400-500 lang ang rpm ko pag bagong start. di naman namamatayan pero syempre may nginig. pero pag umandar na at uminit na makina swabe na ulit. masaba sa makina yung mababang idling pag bagong start? ano solution dito?

**arnarn** · July 23rd, 2009 10:53 AM

up lang po!

**simarun** · July 23rd, 2009 08:09 PM

di naman masama sa makina but try to observe pag nagvibrate siya, whole body/parts are shaking so kahit papano may effect din yun. gawin mo na lang is press the accelerator a little habang malamig pa siya, maintain it at around 800 to 1000 rpm hanggang uminit siya