I hear a noise that sound like marbles in a can. It’s when I accelerate from abkut 1000 rpm to 2500 rpm. It doesn’t sound like the transmission. It’s stops when I get in it. Does anyone have an idea?

 

Welcome to the forum

Hard to say but description reads like pinging/knocking because engine is under a load, it WILL damage the engine if it continues

Put in 91 or 93 octane fuel next time, it will take 20-30 miles to get lower octane mixed in, so be patient, if the noise is less and then gone it was pinging/knocking
So could be failing EGR system and/or bad Knock sensor


2005 Ranger will have the 4.0l SOHC engine, it needs to have the two timing chain tensioners replaced every 100k miles
If timing chains get loose then their guides will break, and engine must be pulled out to replace them

Google: 4.0l sohc death rattle

Watch and LISTEN to the videos