Rattling sound during acceleration

**jick.cejoco** · January 14th, 2016 08:31 PM

Check engine vacuum with a reliable vacuum gauge both with engine cold and at normal operating temperature at idle speed. You might have a VSV (vacuum switching valve ) induced intake manifold leak.

**bail** · January 16th, 2016 07:44 PM

Originally Posted by vinj

November 2014? How far has the car traveled since then? You should get a tune-up perhaps once a year if you don't rack up high mileages. Before, i'd check the timing and spark plugs (if using copper tipped) every 10,000kms.

Have the MAF sensor cleaned also.

Around 9000kms already.

**bail** · January 16th, 2016 07:46 PM

How much na ngayon magpa tune up ng ECU?any recommended place?

**bail** · January 19th, 2016 03:32 PM

Guys should i go for shell vracing nitro with 97 octane or the petron blaze 100?

**bail** · January 20th, 2016 05:10 PM

Anyone? Hope to receive replies soon

**alx** · January 24th, 2016 12:33 AM

having the same noise.

changing to a higher octane gas did not improve. may tope parin.

mine is avanza matic. already ask toyota yun culprit daw is pangit gas naten.

ive notice pag malamig pa engine, wala naman tope pero pag matagal na sa road ayun na. irritating yun sound!

any suggestion?

**alx** · January 25th, 2016 10:53 AM

Originally Posted by bail

Anyone? Hope to receive replies soon

sir bail manual or matic transmission ng kotse nyo?

**Corolla_rider** · February 4th, 2016 05:53 AM

Originally Posted by bail

Car is running smoothly at first but once it gets hot or if the car stays on the road for more than an hour ive notice rattling sound from the hood everytime i step on the gas pedal. Car although does not lose power but the sound is annoying. Theres no sound when the car is idle. Cant seem to find the cause of it. Im using corolla 1997 gli 1.6 with 110k mileage. Please help. Thanks

it will be best to visit a trusted mechanic. You may just need a car tuneup or something else. If you don't have a trusted one yet, try to shop around.