Help to Identify These Hoses

Hello,

Does anybody have the diagram for these hoses and its names? Also, if there is any aftermarket parts available that will be better. Thank you

 

Whats wrong w/ the ones there? They're just ventilation hoses... first one goes to your pcv valve. I think the second is just labeled as a No.2 vent hose thats coming off the air cleaner assembly. Are you looking for part numbers to replace damaged hoses?

 

When idling, my truck vibrate a little bit like a misfired. I brought it to my friend who is a mechanic and he said it could be the throttle body. I cleaned it first but nothing changed, so I replaced the throttle body with an aftermarket but the problem still persist. I found the above hoses have some cracks at the end, so Idk if this is the cause.

As of right now, I have replaced the following item trying to solve the vibration when idling in my truck but not successful.
- Spark plugs (NGK Iridium)
- Mass air flow sensor (OEM)
- Cleaned throttle body, then replaced with an aftermarket (thinking to return to switch to OEM)
- PVC valve (OEM)
- Batteries (Costco)
- Alternator (OEM)

My truck idle for about 400-500 RPM constantly, when the engine rev, it bumps to 600+ and started vibrating.

 

I replaced the first hose with a piece I cut to size. It was just no name brand hose I got from the Auto store. Good Luck!

 

Throttle body or tps will likely show up at higher rpms (3k). Nothing wrong w/ replacing a cracked hose, but If the cracks are at the very end of the hose it's unlikely to be causing a vacuum leak. Can always spray some soapy water and see if it bubbles up.
Check other stuff in the rotating assembly too. Sounds rpm dependent. Belt/pulleys, fan, etc