HELP! Mataas Idling RPM, corolla 4AFE engine.

[xfreemanx]

Mataas ang idling ng corolla gli ko..umaabot ng 1400 RPM pag wlang aircon. 1000 pag nakaengage ang compressor.

Chineck na ang mga hoses, OK naman.
Yung sikip ng cable na nakaconnect sa gas pedal, OK naman.
Ni reset na ang ECU by disconnecting the corresponding fuse.

Ano kaya dahilan nito? Sabi ng mekaniko, MAP sensor daw. Naghanap ako sa banawe, pota, 20K ang brandnew! :o hanap ng surplus, kaso di eksakto ang partnumbers. So bumili ako ng kahawig, medyo mas malaki lang, toyota MAP sensor din, 1K. Di rin umubra, mataas pa rin and idling!

HELP!!!

[JAYarc]

Baka OXYGEN sensor, pa check mo bandang pipe line bago mag primary muffler , pag may knock sensor ung EFI or ECU unit>>

[wickedjayjay]

if all else fails bring it back to the dealer and have them look it up

[theveed]

walang O2 sensor ang 4AFE, ang malamang na prob mo ay yung aircon idle up switch (not the solenoid), eto yung nasa gitna ng firewall may parang knob sya to adjust the vacuum (big plastic knob kung Sanden, flat screw slot for Denso). Usually kung sira etong part nato magleleak ng vacuum pressure... Mas halata kung naka AC.

Medyo malabo masira ang MAF sensor ng 4AFE dahil nakatago sya sa may throttle body unlike sa Lancer na naka expose right after the air box.

Anong year ang Corolla mo? kung 93-94 Sanden yan, mga 2K ata bnew, kung Denso di ako sure but you can call Denso Coolmate at 8441493. Surplus medyo mahirap maghanap ng adjustable type, usually yung fixed sya (pang AE92) na walang adjustment, di pwede yun. Surplus mga 500-800 sya, akin dati surplus na Denso.

Try ko hanap pic

[xfreemanx]

Dinala ko sa banawe and tried swapping out the idle up a couple of times, i guess it was the switch since may flat screw na pihitan.. still, di bumaba ang rpm.

We also tried to replace the whole throttle assemby (twice pa) but the rpm was still at 1200-1400.

the mechanic then changed the distributor, same thing. he adjusted the alignment of the distributor, medyo bumaba but still at 1000 rpm...

im running out of ideas here...HELP

[theveed]

di mo pwede adjust ang idling ng Corolla, babalik ng ECU sa kung ano man data na natatangap nya through the different sensors in the car. Kung ako sayo bite the bullet and bring it to casa for a diagnosis...

[theveed]

di mo pwede adjust ang idling ng Corolla, babalik ng ECU sa kung ano man data na natatangap nya through the different sensors in the car. Kung ako sayo bite the bullet and bring it to casa for a diagnosis...

Yung idle adjuster ng aircon is the one sa topmost center part ng pic na to, yung blue na kulay. Kung may leak yung hoses na yan magloloko ang idling.

http://www.pbase.com/image/2497290

[burjegol]

mr. freeman,
i think mr. theeved has a point. as i told you in one of this threads, ganyan din problem ng ride ko. 1400 rpm kung off ang a/c and 1000 pag naka-engage. Nangyari ito, as i remember, nabali ng mekaniko ang idle compensator and pinalitan ng replacement (di kagaya ng naka-litrato), ganito na ang labas, na mata-as ang rpm ng makina. di ko lang ma-asikaso ngayon kasi la ako sa pinas, kumakayod para me pampa-ayos ng oto.

[JAYarc]

mas maganda talaga ipa diagnos sa casa>>

[JAYarc]

mas maganda talaga ipa diagnos sa casa para safe>>

[squala]

If the casa is too expensive for you. You can try Delta Motors. There's 1 near Cubao, 1 in Marikina, as far as I know. They specialize in Toyota cars but significantly cheaper than Toyota casa itself.

I had my idling fixed there too. My problem was only a clogged throttle body and the whole thing was solved by cleaning. I don't know exactly what's the problem with yours but I'm pretty sure the mechanics there can provide you with a remedy.

[Intrepid94]

Pre, baka may singaw ang intake manifold gasket mo. one way to find out is to get a fropane torch (sumisingaw na walang sinde) then bring it closelly all around to the gasket and when the engine speed or RPM increase thats it.

[Vinsanity]

Ganun pala yun, baguhan lang kasi ako sa kotse and akala ko normal yun habang naka-idle ako, 1k RPM ko.. Actually pagstart ng kotse ganun, 0 lang siya kapag patay makina. Using a 2000 Hyundai Sonata GLS. SO dapat pagkastart ng oto, 0 rpm bsta idle

[speedyfix]

daan mo sa shop and we can take a look at it.