My 05 3.0i auto has been making a grinding noise on occasion for three years or so whenever it’s cold and you put it in drive. It only lasts about 20-30 seconds. Only happens when moving.
On some occasions it will make a sound like when you wet your finger and rub a drum head: 1:21 in this video.
https://youtu.be/_AvBqIH-Eus?si=4733g9se98ku0vMQ When this happens power is reduced for about 5 seconds until the sound stops (only ever lasts about 5 seconds).
I thought it could’ve been something pulley related on the front of the engine and over the course of 6 months replaced almost everything, except the power steering pump and A/C compressor. I had a leaky power steering reservoir that dumped crap everywhere. My alternator needed replacing because it’s bearing was destroyed from the ps fluid. The bearings of almost everything were old anyway so I thought, maybe a bearing is really bad on something.
The transmission has been completely fine. Not once has it lagged switching from park to reverse. When it’s cold it hasn’t ever had problems switching gears or holding for too long. It’s never been serviced.
I just had both diff fluids replaced and the transfer case fluid swapped, same issue this morning.
My PS pump still has a lot of gunk around it, as it’s so hard to remove that crap. The AC compressor is a non OEM one from 2018 and I haven’t had any issues with it.
It’s not a continuous grind, it’s intermittent once you accelerate. I can feel it in the seat. It’s gone completely after 30 seconds max and it’s been there for three years… I replaced the TC actuator gear around 3 years ago when it threw a 4x4 code. I’m at a loss of what it could be. Maybe related to that? I read about the chains expanding, i’m at 180,000
12-18-2023, 02:00 PM
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