Hi,

I changed the sparks, the air filter and check the MAF sensor and I still have that noise. It sounds a little bit better than before but it's still here.

Do you have any idea of where it can come from?

Thanks!

 

No Engine Codes?

 

No there's nothing.

The noise is present at a rpm a little bit higher then idle now. Also when I shift gears.

 

That sounds a bit low for an idle on a little 4-banger. For the noise I'd get a stethoscope and try to narrow down the noise location. Top end could be a rocker shaft bearing, middle possible piston slap or wrist pins. lower could be big ends or main bearings. If you're not getting oil pressure warnings or oil loss about all you can do is drive it and don't worry until it gets worse and easier to diagnose.

 

Is it possible to increase a bit the idle rpm?

I don't have a stethoscope and it's hard to tell where it comes from exactly. I'd say from the exhaust pipe. It appears only at a specific rpm.

Thanks.

 

My 2000 Echo has an Allen set screw and locknut in place as a throttle stop, but even there the throttle is held off it a bit likely by the PCM or whatever Toyota calls their logic board. I'll check next time out to see what my idle is @ hot and cold. For a stethoscope I used to use a long screwdriver with the bit on the motor and the handle pressed firmly against my ear. It worked but the $15 unit that Princess Auto sells is excellent for clarity and comfort (and safety).

 

vibrations as well

Hello,
My problem is kind of similar but it could be from the transmission, I just bought a 2001 Toyota Echo with about 55000 miles on it, and it runs smooth as a baby's but. My only problem with it is when i come to a stop it starts vibrating like crazy almost as if its the hood making all the noise, but when i put it in park or neutral it stops. Any ideas what this might be? I'm pretty nervous since i just bought it, and the noise is driving me crazy?! I guess i can post this in another thread, but any help will be greatly appreciated.

 

Hello,
My problem is kind of similar but it could be from the transmission, I just bought a 2001 Toyota Echo with about 55000 miles on it, and it runs smooth as a baby's but. My only problem with it is when i come to a stop it starts vibrating like crazy almost as if its the hood making all the noise, but when i put it in park or neutral it stops. Any ideas what this might be? I'm pretty nervous since i just bought it, and the noise is driving me crazy?! I guess i can post this in another thread, but any help will be greatly appreciated.

I'd check the exhaust system; the motor lugs down a bit idling in gear and could be shaking at just the right frequency to rattle a loose tail pipe or broken hanger bracket. If so it's an easy fix. :thumbsup: