Rattle
Thread Starter
1st Gear
Joined: Jul 2020
Posts: 1
Likes: 0
From: Oklahoma
Rattle
My car makes a rattling sound in the morning when I started it sounds like something is rattling in the driver side engine compartment sounds like a old diesel motor or it sounds like just something loose rattling but it cycles like the AC unit cycles and stops when the car warms up I cannot figure it out
Rookie
Joined: Jan 2020
Posts: 34
Likes: 17
From: TN
My car makes a rattling sound in the morning when I started it sounds like something is rattling in the driver side engine compartment sounds like a old diesel motor or it sounds like just something loose rattling but it cycles like the AC unit cycles and stops when the car warms up I cannot figure it out
This isn't that big of deal because the rattle is low oil pressure to the tensioner. After driving 100 miles in 84°F heat at idle with AC on/off the rattle will come back. I switched to 5-30 with a heavy oil stabilizer its been keeping the tensioner rattle at bay. The oil stabilizer keeps the oil from breaking down in high heat. I drive 09 LS with 254xxx miles and commute 200 a day. I know this vehicle very well!
I'm planning on replacing the chain and all tensioners at 300xxx miles just because this rattle has always been on my mind.
I DO NOT RECOMMEND 5w30 with oil stabilizer IF YOU DRIVE LESS THAN 25 MILES A DAY.
Trending Topics
Lexus Champion
Joined: Oct 2019
Posts: 18,383
Likes: 1,801
From: Ohio
The tensioners are self ratcheting with the exception of the chain linking the intake to exhaust cams, unlikely the main tensioners are having the rattle when cold/drained or when the oil is hot.
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4
Joe Kucinski
8 Weirdest Things Lexus Has Ever Built
Verdad Gallardo
10 Lexus Designs That Have Aged Like Fine Wine
Verdad Gallardo
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
Intermediate
Joined: Aug 2021
Posts: 465
Likes: 205
From: VA
Haitianluv does it sound like this? See attached. My 2014 has 300k miles on it. I have noticed this sound only on a cold start-up and once it's warmed up it won't make the sound anymore. My mechanic buddy said it sounded like a stuck lifter that is oscillating incorrectly when cold, but then become un-stuck when warmed up. He said that as long as I'm not driving heavy load when it's making this sound it's probably good.
I will say that I added SeaFoam cleaner into my oil last weekend (9 fl.oz.) and since then this noise has gone away. I'd imagine the cleaner un-stuck whatever was making this sound. As previously mentioned by Mythicalni I do plan on moving to 5w-30 and adding in a heavy oil stabilizer when I change the oil this weekend. Hopefully I don't find metal in my oil today....
I will say that I added SeaFoam cleaner into my oil last weekend (9 fl.oz.) and since then this noise has gone away. I'd imagine the cleaner un-stuck whatever was making this sound. As previously mentioned by Mythicalni I do plan on moving to 5w-30 and adding in a heavy oil stabilizer when I change the oil this weekend. Hopefully I don't find metal in my oil today....
Pit Crew
Joined: May 2018
Posts: 112
Likes: 18
From: CA
Haitianluv does it sound like this? See attached. My 2014 has 300k miles on it. I have noticed this sound only on a cold start-up and once it's warmed up it won't make the sound anymore. My mechanic buddy said it sounded like a stuck lifter that is oscillating incorrectly when cold, but then become un-stuck when warmed up. He said that as long as I'm not driving heavy load when it's making this sound it's probably good.
I will say that I added SeaFoam cleaner into my oil last weekend (9 fl.oz.) and since then this noise has gone away. I'd imagine the cleaner un-stuck whatever was making this sound. As previously mentioned by Mythicalni I do plan on moving to 5w-30 and adding in a heavy oil stabilizer when I change the oil this weekend. Hopefully I don't find metal in my oil today....
I will say that I added SeaFoam cleaner into my oil last weekend (9 fl.oz.) and since then this noise has gone away. I'd imagine the cleaner un-stuck whatever was making this sound. As previously mentioned by Mythicalni I do plan on moving to 5w-30 and adding in a heavy oil stabilizer when I change the oil this weekend. Hopefully I don't find metal in my oil today....
i am having the same issue. https://www.clublexus.com/forums/ls-...l#post11473085
so I should use 5w-30 and put in lucas heavily oil stabilizer? this video says no oil stabilizer. just use heavier oil.
LS460 has VVTI engine, definitely don't use certain type of oil stabilizer
Last edited by diamente; Mar 23, 2023 at 10:14 PM.
Thread
Thread Starter
Forum
Replies
Last Post