Squealing noise under the hood

[7391N]

I own a 2008 Yaris 1.5 M/T and so far it's been a wonderful ride.

However, there's this recurring squealing noise whenever I start the car or when I turn on the airconditioning. I believe this is a result of loose drive belts or possibly the defective bearings from the tension wheel/pulley (?) or something.

I'm hesitant to have this fixed by our neighborhood mechanic because it might void the 3-year warranty, for which it is still covered. Also, I want to put OEM parts to the car and I can't seem to find a store selling OEM Toyota parts in my location.

My original plan is to bring the car to the casa. However, I'm also not to confident on driving it 220km to the service center in Butuan City.

Any thoughts on this?

[mazingerZ]

medyo maluwag lang ang fan belt mo IMHO. Have it checked when you have your routine PMS

[7391N]

medyo maluwag lang ang fan belt mo IMHO. Have it checked when you have your routine PMS

ok lang kaya mag drive ng 220km kung maluwag yung belt? parang nakakakaba kasi.

[oliver1013]

Fanbelt, either A/C, alternator, power steering etc. Have it tightened or replaced depending on the condition of the said part

[7391N]

Fanbelt, either A/C, alternator, power steering etc. Have it tightened or replaced depending on the condition of the said part

ok lang kaya mag drive ng long distance (220km) papuntang casa kung maluwag yung belt?

tsaka mavo-void ba yung warranty kung iapapgawa sa neighborhood mekaniko lang?

[Ry_Tower]

ok lang kaya mag drive ng 220km kung maluwag yung belt? parang nakakakaba kasi.

kaya pa yan sir basta wag mo lang ihataw sasakyan mo. Kung sa aircon yan, you can also opt not to use it muna during cruising speed. mahangin naman.

[7391N]

kaya pa yan sir basta wag mo lang ihataw sasakyan mo. Kung sa aircon yan, you can also opt not to use it muna during cruising speed. mahangin naman.

ilan kaya ang ime-maintain na speed.. mga 50-60kph.. ok na kaya yon?

[mazingerZ]

san ka ba nagpapachange oil ? Ang layo kasi ng CASA.

[dr. d]

your belt(s) are probably loose. have them checked and adjusted. you can do it yourself, if you are mechanically inclined. just one or two wrenches, maybe a stout screwdriver, and elbow grease. (do it with the engine still cold, in the morning. it's less painful this way.) but if you are worried of voiding the warranty, you have no choice but to limp over to the casa..
usually, the noise disappears after 1 or 2 minutes of engine running, right? then you can go to the casa.
now, if it's an idler pulley, i recommend replacement. you can lubricate the idler temporarily using spray lubricant so the noise disappears, but it'll just return after 1 or 2 weeks.

[7391N]

san ka ba nagpapachange oil ? Ang layo kasi ng CASA.

Sa casa po. oo nga ang layo! Ok lang naman ibyahe dati. ngayon lang medyo hesitant ako dahil sa tunog pag bubuksan ang AC. ilan kaya ang speed na hindi masyadong delikado?

Kung mga 60kph ang speed ko, aabutin ako ng almost 4hours to Butuan.

[7391N]

your belt(s) are probably loose. have them and adjusted. it's easy and there's practically no evidence or marks that you had non-casa mechanics do it. you can do it yourself, if you are mechanically inclined. just a wrench, maybe a stout screwdriver, and elbow grease. (do it with the engine still cold, in the morning. it's less painful this way.)

I already tried pero it seems nakasagad na yung adjustment siguro nga time to replace the belt. 3 years old na rin kasi. ganon ba ang normal lifespan ng belts?

[7391N]

Ooopppss! I keep saying 220km is the travel distance to Butuan... I actually meant 120kms only.

Sorry 'bout that.

[Ry_Tower]

ilan kaya ang ime-maintain na speed.. mga 50-60kph.. ok na kaya yon?

kahit 80 kph puwede pa yan. !st time pa lang naman marinig mo yan di ba? So hindi pa siya masyadong maluwang or pudpod.

[7391N]

kahit 80 kph puwede pa yan. !st time pa lang naman marinig mo yan di ba? So hindi pa siya masyadong maluwang or pudpod.

Nope. First time I heard it was about 6 months ago, then I had it adjusted in the casa. It stopped squealing/screeching after that.

Then it started making that noise again probably 2-3weeks ago, mildly at first but getting louder now. But it does stop after a few moments.

I don't use the A/C nowadays because of this.

[7391N]

UPDATE:

I just had the belt replaced today by our friendly neighborhood mechanic. I couldn't wait for the 2 weeks the Butuan casa said it needed to order the belt from Manila.

And they couldn't even tell if the part is available in Manila!

The replacement belt was Dayco (4PK-1240) that cost 480pesos.
Anyway, I hope the belt holds up, at least until I get hold of an OEM Toyota belt.

[Ry_Tower]

^3 years na rin naman yang belt mo. IMO sulit na rin yan. Next time ka na bumili kapag may squelling sound na ulit. Maa-adjust pa naman siya ulit. But if may time ka makapunta sa casa, pwede din namang bumili ka na if may budget. Sa belts ng aircon, power steering at radiator fan hindi naman kelangan lagi na OEM. IMO sa mga timing belts lang mahirap mag-tipid.

But if kaya nga ng budget, OEM na.

[SiRbossR]

^correct! Timing belts should always be OEM.

[7391N]

According to the Toyota website FAQ, the Yaris utilize timing chain, instead of timing belts.

Here's the link for the FAQ:
http://www.toyota.com/help/faq-service.html

But I agree that for cars with timing belts, OEM parts should be used.