Weak idling during cold start

[silver_corolla]

Hi Guys,

Need your advice sana. Na experience ko kasi lately sa Toyota Corolla 1.6GL ko tuwing malamig ang makina, kapag start ko yung engine namamatay sya kaagad. Bumababa ang rpm/idling nya hanggang sa mamatayan ako. What I did is to start ulit yung engine sabay tapak na lang sa gas para di sya mamatay. I also experienced this kapag na-start ko sya tapos maglo-load ako ng aircon or headlights, the rpm will go down until mag-off sya. Hindi naman ako tinitirik nito basta uminit na makina wala ng problem. During cold start lang talaga.

Ang advice sa akin ng mechanic ko eh yung AUTOMATIC CHOKE sa carburator ko may tama na daw. Kailangan daw palitan na ang AUTOMATIC CHOKE, pero ang problema hindi daw nakakabili ng AUTOMATIC CHOKE lang, buong carburator daw ang bibilhin ko.

Gusto ko sana magpa-second opinion sa ibang mekaniko kung ano ba talaga problema ng carburator ko. Kung may masa-suggest/mare-refer din kayong auto shop/specialist sa CARBURATOR ng Toyota much appreciated.

Thank you very much indeed,
Pete

[1D4LV]

his theory could be right bro.

[silver_corolla]

Pwede kaya ako makabili ng Automatic Choke lang? Kasi nagtanong ako sa Toyota Shaw pwede daw sila umorder ng Automatic Choke lang. Pero ang problema ko kailangan sa kanila mo ipapakabit. Matagal kasi sa casa, pipila ka pa. Wala kayang third party supplier na pwedeng bilhan nito?

[1D4LV]

Pwede kaya ako makabili ng Automatic Choke lang? Kasi nagtanong ako sa Toyota Shaw pwede daw sila umorder ng Automatic Choke lang. Pero ang problema ko kailangan sa kanila mo ipapakabit. Matagal kasi sa casa, pipila ka pa. Wala kayang third party supplier na pwedeng bilhan nito?

bro, magkano price? magkano difference if in case you get a new carb, maski replacement?

[silver_corolla]

HG,

nagpapa-repair ka ba sa Shell Las Pinas beside KFC? Doon kasi naka-based mekaniko ko.

[1D4LV]

SC: di pre. although I get my gas there regularly. ang mekaniko ko kasi based dun sa shell las pinas - tramo - caa (yung malapit sa southvale).

[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?

[silver_corolla]

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]

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]

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]

up lang po!

[bilog]

do gasoline engine have manual choke? all the while i thought only diesel engine have choke switches.

[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.

[silver_corolla]

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

[yomar]

sorry for the ignorance ha.. pero i have a question...

sa prob ni silver corolla, does it mean na yung choke valve ng carb niya is always open? After reading wildthing's and yenner's posts, naisip ko, pwedeng tama yung mechanic ni silver pero pwede ding hindi. Hassle kasi kung bumili agad si silver ng bagong carb, eh iba pala ang sira, like what yenners experienced. Eh kung i-try muna kaya ni silver to manually close the choke during cold starting (like what wildthing asked)? Kung ganun pa din, ibig sabihin hindi yung carb ang prob. Whatcha think? May kabuluhan ba pinagsasabi ko o walang kwenta? hahaha :D