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Whining noise with RPM first start of some days #5454039 06/14/20 09:44 PM
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wing0 Offline OP
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2001 RX300 with 280k km. 1MZ-FE engine.
Drained and filled steering reservoir with Mobil 1 ATF.
Drained and filled ATF every 20-30km interval
Transfer case + rear diff changed Redline 75W90 at 210k km.

Sometimes when starting the car after sitting for a long while, there is this almost supercharger type whining noise around 1500rpm and increases with RPM until around 3000rpm where the engine noise drowns it out a bit.
However, afterwards, if you start and drive the car all day later, you don't hear the whining noise anymore and it doesn't happen every single day.

I traced the noise to be by the airbox and looks to be where the starter is or under it. I can hear the whining noise with a screwdriver placed on the starter.
Putting car in R makes the noise louder, but after I turn off the engine and wait a few minutes to turn it back on. The noise is gone.

I found this thread with the same sound, which the OP says it's tranny issue and like the OP, I changed ATF regularly, it's never brown or anything and always replaced with Type-IV.
One thing I haven't done is take the pan off to clean the magnets and replace the filter(I believe OEM is metal filter).

https://www.clublexus.com/forums/rx...aling-whistling-noise-2.html#post9592490

Could it be due to motor/transmission mounts?
If shifting in different gears and all can have an effect on the noise, the powertrain does shift into a different position depending on P/R/D gears?

Re: Whining noise with RPM first start of some days [Re: wing0] #5454086 06/14/20 10:56 PM
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JMJNet Offline
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If you suspect the mounts are bad, you need to inspect it? or have somebody inspect it?
If that is not the issue, then it may be internal to the transmission.
I know it is probably not a DIY so you need to bring it to a good mechanics who know about Toyota Transmission.

Last edited by JMJNet; 06/14/20 10:57 PM.

  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: Whining noise with RPM first start of some days [Re: wing0] #5454112 06/15/20 12:42 AM
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The_Nuke Offline
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Record the sound, upload to YouTube, paste in a link


2012 Charger Pursuit aka "The Bacon Hauler"
- 5.7L + NAG1 (A5) + 3.07 (215mm)
Re: Whining noise with RPM first start of some days [Re: The_Nuke] #5454114 06/15/20 12:47 AM
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wing0 Offline OP
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Originally Posted by The_Nuke
Record the sound, upload to YouTube, paste in a link


Go to the clublexus link in my original post, there are 3 youtube videos by the other poster and it sounds just like that. Whining noise.

I did a bit more research on general toyota transmission and a clogged transmission filter could cause whining.
Since the filter has never been changed, I'm going to order one and change it.

Re: Whining noise with RPM first start of some days [Re: wing0] #5454203 06/15/20 07:36 AM
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Cressida Offline
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I will be interested to hear if the filter change works for you. Please report back in on what you learn after the change.

Re: Whining noise with RPM first start of some days [Re: wing0] #5454226 06/15/20 08:33 AM
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ragtoplvr Offline
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a failing alternator can whine. failing battery or a intermittent drain, a hard charging alternator will also make a noise.

Rod

Re: Whining noise with RPM first start of some days [Re: ragtoplvr] #5454322 06/15/20 10:18 AM
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wing0 Offline OP
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Originally Posted by ragtoplvr
a failing alternator can whine. failing battery or a intermittent drain, a hard charging alternator will also make a noise.

Rod


The noise is coming from the other side of the engine, not where the serpentine belt or alternator is. I did put a screwdriver on the alternator to listen. I also disconnected the negative plug on alternator for a sec and the noise remains (I saw somebody with bad diode in Toyota alternator use this method to test).

Re: Whining noise with RPM first start of some days [Re: wing0] #5454359 06/15/20 11:21 AM
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bullwinkle Offline
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Starter hanging up, not releasing after the engine starts, I bet-when it warms up, it stops sticking. Might just be dirty, cleaning might fix? Hope it’s not under the intake manifold (like someToyotas)!


06 Ram 3500 CTD 4X4(FG Venturi), 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7 (MC), 03 Merc Grand Marquis 4.6 2V(XG2), 11 Express 3500 6.0 (Fram PH10060 for now)
Re: Whining noise with RPM first start of some days [Re: bullwinkle] #5454575 06/15/20 04:43 PM
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wing0 Offline OP
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Originally Posted by bullwinkle
Starter hanging up, not releasing after the engine starts, I bet-when it warms up, it stops sticking. Might just be dirty, cleaning might fix? Hope it’s not under the intake manifold (like someToyotas)!


Thanks for your input. I was thinking if it could be the starter as well, but I cannot find good sources of complaints that the starter makes whining noise, while people said they experienced whining noise from transmission especially before filter change.

So I am only able to put the screwdriver onto the starter housing and hear the whining noise.
It happens usually the first start after sitting for 12+hrs and it persists for at least 10+ mins of driving or last time I let it idle for about 5 minutes and shutoff.
The 2nd start after doesn't seem to have the whining noise anymore. I will have to test this theory further.

The starter is at the same level as the intake filter box so I probably need to remove all of that before I can get access to the starter.
How should I test if the starter is sticking? I know there's a gear inside that pushes out when first starting the car, are you saying it doesn't retract properly and the engine is driving the starter?
How can I clean it? brake cleaner?

The starter is bolted on top of the transmission so right now I need to isolate which one is producing the noise.

Re: Whining noise with RPM first start of some days [Re: wing0] #5454597 06/15/20 05:04 PM
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Kokopelli34179 Offline
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Sounds like starter motor still spinning. It could be the solenoid not disengaging.

I had '02 Jetta that made a squawking noise after cranking. It didn't do it all the time. It ended up being the starter.

Last edited by Kokopelli34179; 06/15/20 05:07 PM. Reason: Added additional part about my VW Hey ya.

2011 Sentra S - Super Tech 5w20, Denso Oil, EAF, & CAF
Vehicles Past:
02 VW Jetta GLS
1997 Pontiac Grand Am SE
1st car: 1972 Chevy Chevelle Malibu
Re: Whining noise with RPM first start of some days [Re: Kokopelli34179] #5454731 06/15/20 08:01 PM
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Originally Posted by Kokopelli34179
Sounds like starter motor still spinning. It could be the solenoid not disengaging.

I had '02 Jetta that made a squawking noise after cranking. It didn't do it all the time. It ended up being the starter.


The car is back at home so I have a chance to take a look.
I would say, I can still hear the whining noise, it's less intrusive in the cabin after whole car is all warmed up. It's not completely gone.
I put screwdriver on the starter again and while the car is idling. I can hear this bearing noise? I'm not sure if the sound is transferred from the motor onto the starter.
It's very hard to distinguish where the whining sound is coming from, once I try to use the throttle cable to rev the engine up, the engine noise just over powers the whining on the ear that I don't have on the screwdriver.

From more reading, if the gear solenoid does not disengage on the starter, the starter would overheat since it's not meant to be always spinning.
What sound should I hear if I tap the starter while the car is idling. Should it be almost silent internally?

Re: Whining noise with RPM first start of some days [Re: wing0] #5454760 06/15/20 08:24 PM
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Kokopelli34179 Offline
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That sounds like your alternator.....

Not sure. It could be lots of things.


2011 Sentra S - Super Tech 5w20, Denso Oil, EAF, & CAF
Vehicles Past:
02 VW Jetta GLS
1997 Pontiac Grand Am SE
1st car: 1972 Chevy Chevelle Malibu
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