When I cold start my 3VZE '95 Pickup, it's really (and I mean really) loud until I rev up and past 3k RPM. Only after I rev past 3k does it settle down and chugs along at it's usual loudness. When I break 3k, the engine gets quieter, even as I continue to accelerate without taking my foot off the gas pedal. The duration of time spent driving doesn't seem to matter – if I drive for 20 seconds and get it up past 3k in 1st, it becomes quieter; if I drive for 5 minutes between all gears but don't break 3k on the shifts, it stays loud until I go past 3k. Has anyone experienced a similar issue?

Not sure if it's related, but lately I've been dealing with high idle issues, even when I get it warmed up to operating temperature. Starts up at around 1.4k cold and stays at 1k warm. I manually adjusted the idle screw on the throttle body when I got home tonight so I'll see if it did anything to mitigate the high idle. That being said, the loudness before breaking 3k issue has been a thing since I purchased the truck last year. It's just seems like it's getting louder now. Otherwise, the truck runs great. Any advice would be much appreciated.

 

Post a video and keep your microphone out of the engine bay and fan blowing..

Sir, you've got to put us in front of the vehicle as best you can with words. We're relying on you're description way over here on the otherside of the internet and "it's loud" doesn't tell us much.

 

Hey Co_94_PU,

Thank you for the input, but with the way modern microphones work the audio will just adjust/compensate automatically to whatever baseline frequency it is receiving so I'm not entirely sure it'll help to post a video. I'll see what I can do with what resources I have (I don't have suction cup mount to have a camera rigged up while I'm driving), but as it stands, when it's in idle the loudness of the engine doesn't change, only when it's in gear and actually moving. Maybe my dashcam will be able to pick up the subtlety of the decibles or maybe I can start the truck, talk a bit over the engine noise to give it that baseline, then run it past 3k and talk over the lowered engine noise...The simplest (In words) that I can put it is that it starts off sounding like a metropolitan garbage truck then when it goes past 3k (in gear) it goes back sounding like a normal vehicle. Let me see what I can rig up. But the main issue I'm noticing is that it's dumb loud then drops volume after it's pushed past 3k RPM...sorry I can't be more descriptive, the range of my vocabulary ain't that deep

 

Mechanical noise, or moving air type noise??? Maybe fan clutch????

 

Doesn't sound mechanical, more like heavy blowing/sucking of air

 

Fan clutch noise