Toyota Corolla GLi Idling & AirCon

[margaret]

Hello everyone! A friend of mine introduced me to this forum
and have read with interest some of the topics posted here.

I have some concerns with my 1995 Corolla GLi (4AFE engine,
16 valve - stock) as my friend could not answer all my questions.
I am hoping for some help, guys.


1. Idling seems to be okay when the A/C is turned on. However,
it goes down to around 750 (i believe) and the engine "nangingingig"
ng konti (but not to the point na it will die down. It then returns
to around 900-1000 RPM when A/C "engages". Is this normal?


2. When A/C is off, idling (RPM) is around 750 (according to
the results from an analyzer used at Servitek) - nanginginig
ng konti ang makina - but di naman namamatay. Is this normal?


3. After starting the car, I turn on the A/C, then drive. Ok naman
ang lamig (nasa 1 setting lang ako parati). However, I noticed
na pag natrapik ako, full stop, blower na lang ang nararamdaman
ko (wala na yung lamig).

Di na rin nag-auautomatic yung A/C. I tried putting the A/C setting
into 2, 3, and 4 - kaso ganun pa rin.

Babalik na lang to normal operation yung A/C pag tumatakbo na uli
ang car.

What could be the problem, guys? Please help!


This is my first post, nga pala. Sana may makatulong sa akin.
Thank you, fellow Tsikot members!


P.S.

Less than 4 weeks ago, I had my coolant, brake fluid, and
power steering replaced. I also replaced all my spark plugs
and air filter, as well as changed my engine oil, fuel filter, and oil filter.

I have also just used the Mitsubishi Fuel System Cleaner -
dito ko nabasa at natutunan yun

I have also just purchased a set of new tires for it.

Except for the above-mentioned concerns, maayos ang
takbo ng car - matipid (9-10 km city driving) - malakas ang hatak
at matulin. And never siya nag-overheat.


Thank you, fellow Tsikot members for your help!

[ghosthunter]

1. Idling seems to be okay when the A/C is turned on. However,
it goes down to around 750 (i believe) and the engine "nangingingig"
ng konti (but not to the point na it will die down. It then returns
to around 900-1000 RPM when A/C "engages". Is this normal?

typically normal for most cars of the type.

2. When A/C is off, idling (RPM) is around 750 (according to
the results from an analyzer used at Servitek) - nanginginig
ng konti ang makina - but di naman namamatay. Is this normal?

normal

3. After starting the car, I turn on the A/C, then drive. Ok naman
ang lamig (nasa 1 setting lang ako parati). However, I noticed
na pag natrapik ako, full stop, blower na lang ang nararamdaman
ko (wala na yung lamig).

Di na rin nag-auautomatic yung A/C. I tried putting the A/C setting
into 2, 3, and 4 - kaso ganun pa rin.

Babalik na lang to normal operation yung A/C pag tumatakbo na uli
ang car.

What could be the problem, guys? Please help!

Sounds like your freon is low or there is a leak. Have your A/C system recharged with freon. If the problem returns, have it checked for leaks.

[margaret]

Could the idle/timing be adjusted on a Corolla GLi, Ghosthunter?

typically normal for most cars of the type.

Thank you very much for the suggestion. I will do so this coming
Saturday. I've read about CeeJay's here, too.

Sounds like your freon is low or there is a leak. Have your A/C system recharged with freon. If the problem returns, have it checked for leaks.

Again, thank you very much for the suggestions!

[susmaryousef]

Ipa check nyo po siguro yung aircon system like auxilliary fan, compressor, evaporator, thermostat sa isang reputable car aircon repair shop. Malamang baka madumi na rin yung evaporator nyan dapat maipalinis at maipa leaktest para malaman kung may butas or baka kulang lang sa karga ng freon.

[margaret]

Thank you for the suggestions. I will be listing these down, too,
when I have the car for check up this coming weekend.

Ipa check nyo po siguro yung aircon system like auxilliary fan, compressor, evaporator, thermostat sa isang reputable car aircon repair shop. Malamang baka madumi na rin yung evaporator nyan dapat maipalinis at maipa leaktest para malaman kung may butas or baka kulang lang sa karga ng freon.

[ghosthunter]

Could the idle/timing be adjusted on a Corolla GLi, Ghosthunter?

Yes but you will end up consuming more fuel if you increase the rpm of the idle.

[margaret]

Hi Ghosthunter!

My thinking was to adjust it a bit (from 750 to 800 RPM).
Gusto ko lang sanang matangal yung "konting nginig"
when it is in neutral.

I asked the mechanic kung puwede i-adjust - pero sabi
niya yung ECU ang automatic nag-aadjust nun
based on the sensors found in the Corolla GLi.

Hoping for your help again, Ghosthunter.

Thank you very much!

Yes but you will end up consuming more fuel if you increase the rpm of the idle.

[ghosthunter]

Hi Ghosthunter!

My thinking was to adjust it a bit (from 750 to 800 RPM).
Gusto ko lang sanang matangal yung "konting nginig"
when it is in neutral.

I asked the mechanic kung puwede i-adjust - pero sabi
niya yung ECU ang automatic nag-aadjust nun
based on the sensors found in the Corolla GLi.

Hoping for your help again, Ghosthunter.

Thank you very much!

The idle speed adjustment screw is on the front of throttle body in a recessed hole (driver's side).

[margaret]

This info is a big help, Ghosthunter!
I will have my mechanic take a look tomorrow.

Bigla tuloy ako napaisip - do you know any
very good Corolla GLi mechanics and/or electricians, Ghosthunter?
Makati area ako, but I also frequent Alabang, Sucat and
Bicutan.

Thank you so much!

The idle speed adjustment screw is on the front of throttle body in a recessed hole (driver's side).

[bongerds]

baka ang cause ng nginig ay broken engine support.

[margaret]

I see. I'll have the mechanic check on this, too.

baka ang cause ng nginig ay broken engine support.

[mjim0721]

Margaret,

I have the same problem with my Corolla GLi 95 . Magaspang ang makina during idling with the aircon on, pero makinis ang takbo kung walang aircon or when the car is in motion. I felt this 2 years ago. I already replaced my engine supports and changed my compressor last year. Last week, my evaporator gave up and was replaced with original denso evaporator. A mechanic told me to have the servo cleaned because it is related to the aircon. However, a mechanic in the Alabang Motortown did not agree that the servo was the problem since the di naman daw nahihirapan ang makina, although nanginginig nga. He fixed the timing but later gave up and did not find anything wrong with my engine. When I have time, I will have the servo and the fuel injection cleaned in a different shop.

Please post the result of your check-up. Thanks.

[n5110]

3. After starting the car, I turn on the A/C, then drive. Ok naman
ang lamig (nasa 1 setting lang ako parati). However, I noticed
na pag natrapik ako, full stop, blower na lang ang nararamdaman
ko (wala na yung lamig).

Di na rin nag-auautomatic yung A/C. I tried putting the A/C setting
into 2, 3, and 4 - kaso ganun pa rin.

Babalik na lang to normal operation yung A/C pag tumatakbo na uli
ang car.

!

ganito din ang experience ko sa civic EK ko last time ang naging problema.

1.0 throttle body madumi kasi erratic idling pag bumaba below 500rpm nag aauto cut off ang aircon kaya blower lang mararamdaman mo.

2.0 sira na yung aircon fan. pag sira ito hinde umaandar nag aauto off din ang AC para hinde masira.

naayos ang prob ko after i had the TB cleaned and change the AC fan. not sure lang kung ganito din ang system sa kotse niyo.

[margaret]

With regards to the AIRCON:

I had the aircon check at two different shops (in a span of 2 days,
talagang gusto kong ma-resolve itong problem)

Both said okay ang evaporator and drier, at walang leak ng freon.
BUT loose compression na daw ang A/C compressor - bumibitaw daw
(i don't know what they mean by this statement)

One thing though, I somehow have doubts with what they said.
Kasi biglang sales talk about installing a new compressor (brand new
daw cost 17K, yung isa naman ang quote 26K). One even offered
a surplus for 7.5K.

Ok, kung compressor ang problem, so be it. But I felt this strange feeling
inside me (whenever someone is trying to do one on you) na telling
me to stay away. I will going to another shop tomorrow - last na to,
and see what they have to say about it.


WITH REGARDS TO IDLING:

One of my trusted mechanics found out na di-naka-timing
mabuti yung car - nasa zero (0) when he used a "timing gun"
(tama ba term ko don sa equipment? )

Anyway, he adjusted the timing to the 10 mark (which is yun
nakalagay sa hood sticker) by adjusting the distributor. Lalong
tumiting ang tunog ng engine - lalong tahimik.

With a digital analyzer, i requested to see the RPM of the car,
with no A/C on. The results gave out 800 RPM (which is the
recommended idling of 1995 Corolla GLi)

Tire-Asia ako nagpa-adjust ng timing ko, then went to
Servitek for their digital analyzer.


Margaret

Margaret,

I have the same problem with my Corolla GLi 95 . Magaspang ang makina during idling with the aircon on, pero makinis ang takbo kung walang aircon or when the car is in motion. I felt this 2 years ago. I already replaced my engine supports and changed my compressor last year. Last week, my evaporator gave up and was replaced with original denso evaporator. A mechanic told me to have the servo cleaned because it is related to the aircon. However, a mechanic in the Alabang Motortown did not agree that the servo was the problem since the di naman daw nahihirapan ang makina, although nanginginig nga. He fixed the timing but later gave up and did not find anything wrong with my engine. When I have time, I will have the servo and the fuel injection cleaned in a different shop.

Please post the result of your check-up. Thanks.

[margaret]

According to the 2 shops I went to:

all the A/C equipment are working - except for the A/C compressor,
loose compression na daw. Di rin daw marerepair.

Parang namahalan ako sa quote nila parehas, 17K and 26 K
for a brand new compressor. Guys tama ba quote nila sa akin?
Original Denso ang A/C compressor ng Corolla GLi 1995 ko.

Yung isang A/C mechanic gave me a warning, dapat ayusin na daw
dahil baka "magkabubog" at pupunta daw iyon sa evaporator.

I'll be going to another shop tomorrow morning - no,make that 2 shops.
Yung isa sa Kamias - i remember them fixing the A/C of my Lancer GSR
dati. Yung isa naman sa Makati - try ko lang.


Margaret

ganito din ang experience ko sa civic EK ko last time ang naging problema.

1.0 throttle body madumi kasi erratic idling pag bumaba below 500rpm nag aauto cut off ang aircon kaya blower lang mararamdaman mo.

2.0 sira na yung aircon fan. pag sira ito hinde umaandar nag aauto off din ang AC para hinde masira.

naayos ang prob ko after i had the TB cleaned and change the AC fan. not sure lang kung ganito din ang system sa kotse niyo.

[margaret]

*n5110:

With regards to the Throttle Body - matagal ba ang paglinis nun?
May mga pyesang pinalitan or cleaning lang talaga?
Mga what price kaya ang pa-cleaning - havent done this yet
kaya akong alam about it.

Hoping for a reply....

Margaret

[margaret]

I had the engine supports checked, everything is ok daw,
except for 1 piece na may "minor crack".

Aabot pa daw ng 1-2 years yun kaya ayaw palitan ng
mechanic.

I had him drive the car. Ok naman daw clutch. Malakas
ang hatak at matulin talaga yung car - and he believes
hindi clutch ang problem - baka yung pagtimpla ko sa
clutch and gas pedals.

Sa totoo lang, grade 5 pa lang ako since natuto ang mag-drive
and i never ako nahirapan sa pag-timpla ng pedals (dito lang).
Kaya nga medyo nakaka-aburido rin talaga yung nginig.

Napaisip ako: Dirty Throttle Body at IACV kaya ang possible cause
ng nginig? Eto na lang ang di ko pa natra-try ipagawa (cleaning).
Have any of our friends here at Tsikot experienced this?


Margaret

baka ang cause ng nginig ay broken engine support.

[speed unlimited]

With regard sa timing mo tama iyong ginawa ng mekaniko mo . Pagtama timing ng sasakyan mo subukan mong i rev. mararandaman mo galit agad makina at walang delay sa rebolusyon .Iyon siguro dahilan kaya may nginig sa makina mo.

[margaret]

Kanina lang nangyari yung pag-correct ng timing.
Pinapa-observe niya sa akin ng mga ilang araw.
I'll be driving tomorrow the whole day - tamang-tama
rin para ma-obserbahan ang A/C at makapunta sa 2 A/C shops.

.

With regard sa timing mo tama iyong ginawa ng mekaniko mo . Pagtama timing ng sasakyan mo subukan mong i rev. mararandaman mo galit agad makina at walang delay sa rebolusyon .Iyon siguro dahilan kaya may nginig sa makina mo.

[speed unlimited]

Anyway , Goodluck sana maayos na iyang problema mo sa sasakyan . Just give us feedback kung ano nangyari.