Go Back   Club Lexus Forums > Lexus Special Interest Forums > Maintenance
Sign in using an external account
Register Forgot Password?

2004 RX330 clunk when downshifting

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 09-08-13, 01:16 PM   #1
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default 2004 RX330 clunk when downshifting

Hi everyone, i hear a clunk when the car is downshifting from 3 to 2-nd gear for some reason. Its not loud its just noticeable and a little annoying. So my question is has anyone experienced this before, is it just the nature of the tranny, or something needs to be done. Txs
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
Ehucman is offline   Reply With Quote
Old 09-10-13, 04:00 AM   #2
mitsuguy
Maintenance Moderator
Trader Score: (2)
 
mitsuguy's Avatar
 
Join Date: May 2005
Location: Missouri
Posts: 6,241
Default

Quote:
Originally Posted by Ehucman View Post
Hi everyone, i hear a clunk when the car is downshifting from 3 to 2-nd gear for some reason. Its not loud its just noticeable and a little annoying. So my question is has anyone experienced this before, is it just the nature of the tranny, or something needs to be done. Txs
does it happen every time, or only on "acceleration" downshifts, ie, when downshifting because more acceleration is needed???

if the latter is true, motor mounts would be my first guess, if its every single time it downshifts, could be something in the transmission valve body causing a harsh shift...
__________________
-cody: maintenance forum moderator
- Bridgestone/Firestone, Michelin/BFGoodrich certified
- ASE certified, Motor Vehicle Inspector, HVAC Licensed
- Lots more certs, too many to list here!

2001 Lexus IS300 - 500whp/476wtq (Mustang Dyno)PTE 6765/Custom AEM EMS - Auburn Sky Pearl (1 of 1348)
1999 Isuzu VehiCross 285/75-16 Destination MT's - Astral Silver Metallic (1 of 1021)
mitsuguy is offline   Reply With Quote
Old 09-11-13, 09:22 PM   #3
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default

It only happens when coming to a stop, when the car is slowing down on its own. I dont hear it when i am braking and coming to a stop fast. it happens at around 40 km/h travel speed. One clunk and thats it. It feels like the transmission doesn't like to downshift into second gear my guess is.
Ehucman is offline   Reply With Quote
Old 09-11-13, 09:23 PM   #4
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default

Quote:
Originally Posted by mitsuguy View Post

does it happen every time, or only on "acceleration" downshifts, ie, when downshifting because more acceleration is needed???

if the latter is true, motor mounts would be my first guess, if its every single time it downshifts, could be something in the transmission valve body causing a harsh shift...
It only happens when coming to a stop, when the car is slowing down on its own. I dont hear it when i am braking and coming to a stop fast. it happens at around 40 km/h travel speed. One clunk and thats it. It feels like the transmission doesn't like to downshift into second gear my guess is.
Ehucman is offline   Reply With Quote
Old 09-12-13, 05:08 PM   #5
onepointon
Pole Position
Trader Score: (0)
 
Join Date: Sep 2007
Location: East Coast
Posts: 347
Default

You say its not loud, if that is so check this.

If you drop the front under engine cover, the one that is ~45 degrees from the ground, you will see 2 10mm bolts holding a metal trans cooler line to the body (lower radiator support) of the vehicle. Take these out and put something between them to insulate the metal from the radiator support. See if that changes it. I unfortunately do not have any pictures. I have seen a few vehicles have this problem and that was the cause.
__________________
- ASE Master/Lexus Master Certified Technician -
onepointon is offline   Reply With Quote
Old 09-13-13, 09:36 PM   #6
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default

Quote:
Originally Posted by onepointon View Post
You say its not loud, if that is so check this.

If you drop the front under engine cover, the one that is ~45 degrees from the ground, you will see 2 10mm bolts holding a metal trans cooler line to the body (lower radiator support) of the vehicle. Take these out and put something between them to insulate the metal from the radiator support. See if that changes it. I unfortunately do not have any pictures. I have seen a few vehicles have this problem and that was the cause.
So what you re saying, its like metal rubbing against something? I will definitely try to find those bolts location. However today i discovered a new problem, perhaps worse one):
While accelerating from coming to a complete stop, i noticed a hard shift from 2-nd to 3-rd gear, i could feel the tranny jerk, it happened before like once or twice a week but today it kept happening every time i took off from a traffic light. And then it stopped all the sudden.. Freaked me out big time.... So i took all the fuses out that said ECU on it.. I think there were 3 in total. Hoping it would reflash the computer, and after driving for 15 min. It was smooth. Not one jump.. But i will find out tomorrow morning if it still persists. I dont know what that could be, i dont feel like spending $200 at lexus, just so they can say its normal....
I use 89 octane gas...
If any of you have experienced this issue with your 2004 RX 330... And perhaps have solved the problem...Please share what the solution was.. Regards
Ehucman is offline   Reply With Quote
Old 09-13-13, 09:37 PM   #7
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default

Quote:
Originally Posted by onepointon View Post
You say its not loud, if that is so check this. If you drop the front under engine cover, the one that is ~45 degrees from the ground, you will see 2 10mm bolts holding a metal trans cooler line to the body (lower radiator support) of the vehicle. Take these out and put something between them to insulate the metal from the radiator support. See if that changes it. I unfortunately do not have any pictures. I have seen a few vehicles have this problem and that was the cause.
So what you re saying, its like metal rubbing against something? I will definitely try to find those bolts location. However today i discovered a new problem, perhaps worse one): While accelerating from coming to a complete stop, i noticed a hard shift from 2-nd to 3-rd gear, i could feel the tranny jerk, it happened before like once or twice a week but today it kept happening every time i took off from a traffic light. And then it stopped all the sudden.. Freaked me out big time.... So i took all the fuses out that said ECU on it.. I think there were 3 in total. Hoping it would reflash the computer, and after driving for 15 min. It was smooth. Not one jump.. But i will find out tomorrow morning if it still persists. I dont know what that could be, i dont feel like spending $200 at lexus, just so they can say its normal.... I use 89 octane gas... If any of you have experienced this issue with your 2004 RX 330... And perhaps have solved the problem...Please share what the solution was.. Regards
Ehucman is offline   Reply With Quote
Old 09-15-13, 05:23 PM   #8
onepointon
Pole Position
Trader Score: (0)
 
Join Date: Sep 2007
Location: East Coast
Posts: 347
Default

Quote:
Originally Posted by Ehucman View Post
So what you re saying, its like metal rubbing against something? I will definitely try to find those bolts location. However today i discovered a new problem, perhaps worse one): While accelerating from coming to a complete stop, i noticed a hard shift from 2-nd to 3-rd gear, i could feel the tranny jerk, it happened before like once or twice a week but today it kept happening every time i took off from a traffic light. And then it stopped all the sudden.. Freaked me out big time.... So i took all the fuses out that said ECU on it.. I think there were 3 in total. Hoping it would reflash the computer, and after driving for 15 min. It was smooth. Not one jump.. But i will find out tomorrow morning if it still persists. I dont know what that could be, i dont feel like spending $200 at lexus, just so they can say its normal.... I use 89 octane gas... If any of you have experienced this issue with your 2004 RX 330... And perhaps have solved the problem...Please share what the solution was.. Regards
Its a change in transmission line pressure that causes a noise in those lines, because it is solid mounted to the body you hear it sometimes. Like I said though, it may not be your issue, its hard to diagnose over the internet.

As far as the harsh shifting, it was very common on the 04 and 05 RX and ES. Lexus had a shift enhancement software that was released a while back. If your car doesn't have it installed it may help. If it has the updated software it more than likely is 'normal'. I have test driven with many customers with this issue and had to tell them there was nothing we can do, unfortunately.
__________________
- ASE Master/Lexus Master Certified Technician -
onepointon is offline   Reply With Quote
Old 09-16-13, 04:31 PM   #9
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default

Ok. Thanks a lot. You seem knowledgeable about these cars. I was worried that the problem was with only my car. I was hoping that someone would give me the answer I was looking for. I might have to take my car to Lexus to check if there is a software available but a lot of people say that they spent $200 for nothing At the dealership.. But I guess that is the only way to find out If it was installed Previously.
Do you or anyone else know anything about transmission fluid level, my car is cold but when I checked, the oil level shows above hot.. It shows the same level as when the engine is warm.
I am a little worried that there's too much oil?
Ehucman is offline   Reply With Quote
Old 09-20-13, 05:42 AM   #10
Ehucman
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: ON
Posts: 16
Default

Quote:
Originally Posted by onepointon View Post
Its a change in transmission line pressure that causes a noise in those lines, because it is solid mounted to the body you hear it sometimes. Like I said though, it may not be your issue, its hard to diagnose over the internet. As far as the harsh shifting, it was very common on the 04 and 05 RX and ES. Lexus had a shift enhancement software that was released a while back. If your car doesn't have it installed it may help. If it has the updated software it more than likely is 'normal'. I have test driven with many customers with this issue and had to tell them there was nothing we can do, unfortunately.
Ok. Thanks a lot. You seem knowledgeable about these cars. I was worried that the problem was with only my car. I was hoping that someone would give me the answer I was looking for. I might have to take my car to Lexus to check if there is a software available but a lot of people say that they spent $200 for nothing At the dealership.. But I guess that is the only way to find out If it was installed Previously.
Do you or anyone else know anything about transmission fluid level, my car is cold but when I checked, the oil level shows above hot.. It shows the same level as when the engine is warm.
I am a little worried that there's too much oil?
Ehucman is offline   Reply With Quote
Old 09-20-13, 05:42 AM
 
 
 
 
Reply

Tags
06, 1st, 2004, 330, clunk, complete, gear, is250, lexua, lexus, rx, shift, shifting, soft, stop, transmission

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Manual Shifting Logic How to reverse? (Now with pics!) EBMCS03 IS - Second Generation 38 07-17-14 10:35 PM
Clunk when car is downshifting Ehucman RX - Second Generation 0 09-09-13 08:45 PM
Clunk when the car is downshifting Ehucman RX - Second Generation 0 09-09-13 08:44 PM
2004 rx330 clunk when downshifting Ehucman RX - Second Generation 2 09-08-13 01:24 PM
A340e Upshifts too Early and Downshifts too Late FutureSC Performance & Maintenance 2 08-07-13 07:17 AM

All times are GMT -7. The time now is 12:27 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info