screeching sound - Toyota Nation Forum : Toyota Car and Truck Forums

knoxtoy87 · 05-16-2010, 06:47 PM

I have a 93 toy pkup 5 spd and recently whenever i press on the gas while in neutral it has a screeching sound coming from the engine. it gets louder as i press harder on the gas. the sound only comes when i press the gas even in 2nd 3rd 4th gears possibly 5th.it even makes noise in reverse. i have headers and i'm thinking that the noise is coming from the gasket to the exhaust?? or could it be transmission?. i have no loss of power, everything runs fine but it's the sound thats driving me nuts. please help. thanx in advance

edit*- i changed the flanged on the headers to the exhaust, and it still has the sound.

***MR2Jedi*** · 05-16-2010, 08:28 PM

Sounds like a loose belt to me.

***fourwd1*** · 05-18-2010, 09:23 PM

I'm thinking a bearing, maybe alt or water pump or idler pulley.

Orhtotist · 08-14-2010, 06:53 AM

I don't think a belt would be the problem.

Quote:

Originally Posted by MR2Jedi

Sounds like a loose belt to me.

Orhtotist · 08-14-2010, 07:01 AM

I have a very similar sound that is coming from the the front left or front. It's more like a grinding / screeching sound. It's pretty consistant at idle and driving in all gears. I took off the altern. belt it has a tad bit of noise but still turns smoothly. It will do it after you turn the engine off and the engine is winding down. Haven't checked the idle tensioner or water pump. I'm lost, did you ever find out what is was?

Quote:

Originally Posted by knoxtoy87

I have a 93 toy pkup 5 spd and recently whenever i press on the gas while in neutral it has a screeching sound coming from the engine. it gets louder as i press harder on the gas. the sound only comes when i press the gas even in 2nd 3rd 4th gears possibly 5th.it even makes noise in reverse. i have headers and i'm thinking that the noise is coming from the gasket to the exhaust?? or could it be transmission?. i have no loss of power, everything runs fine but it's the sound thats driving me nuts. please help. thanx in advance

edit*- i changed the flanged on the headers to the exhaust, and it still has the sound.

***Jayota*** · 08-18-2010, 03:33 PM

Using a long metal object (like a punch/drift) use it like a stethoscope to locate the source of the noise.

Place it on the alt and listen (be carefull, alts become magnetic while running), then move to the rest of the accessories.

When was the timing belt last changed, was the water pump changed too? If you know, what brand parts were used?

Orhtotist · 08-28-2010, 08:24 AM

It was the clutch fan! Coulding believe that would make that much noise!