Notices
IS F (2008-2014) Discussion topics related to the IS F model

Jumpy gears when cold

Thread Tools
 
Search this Thread
 
Old Nov 22, 2008 | 09:59 AM
  #1  
Salil022's Avatar
Salil022
Thread Starter
Instructor
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Dec 2004
Posts: 1,226
Likes: 22
From: Delaware
Default Jumpy gears when cold

Has anyone Noticed it??? If the car is cold...Transmission feels jumpy...Its been in low 30 degrees here....Is it normal? Once the car is fully warmed up it seems fine.
Reply
Old Nov 22, 2008 | 10:08 AM
  #2  
BigMikeISF's Avatar
BigMikeISF
Lexus Champion
 
Joined: Jun 2008
Posts: 2,162
Likes: 10
From: Dallas, Texas
Default

When you first start it, do you let it warm up a bit or just start driving?

When I start mine, I let it warm up a bit (until the RPM's drop back down to 1k) or until the fluid gauge below the RPM gauge is four or five lines warmed up. I haven't noticed any hard shifting or jumpy gears when I do that. Now when I'm in a hurry and I start it and just take off, I notice jumpy gears, its just cause the engines not warmed up properly, its getting all the fluids flowing again, etc. etc.

Last edited by BigMikeISF; Nov 22, 2008 at 10:11 AM.
Reply
Old Nov 22, 2008 | 10:16 AM
  #3  
Salil022's Avatar
Salil022
Thread Starter
Instructor
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Dec 2004
Posts: 1,226
Likes: 22
From: Delaware
Default

i let it warm up for 2 to 3 mins....on my other cars never noticed this but i'll let it warm up for lil more and see what happens
Reply
Old Nov 22, 2008 | 11:01 AM
  #4  
CDNROCKIES's Avatar
CDNROCKIES
Lexus Champion
 
Joined: Jun 2008
Posts: 3,054
Likes: 3
From: Alberta
Default

We get cold weather like you and I have never noticed the jumpiness you're referring to.

I did learn that you can't use the paddle shifters until the car has had a chance to warm up sufficiently. I have an on ramp less than 2 blocks from our place that can be fun...but if I WOT and try to paddle shift the automatic takes over. I was concerned and called Lexus and was explained that it is basically a protective measure so that we don't damage our tranny's
Reply
Old Nov 22, 2008 | 02:31 PM
  #5  
8speed's Avatar
8speed
Lexus Test Driver
 
Joined: Nov 2008
Posts: 1,083
Likes: 1
From: Va Beach
Default

Originally Posted by BigMikeISF
When you first start it, do you let it warm up a bit or just start driving?

When I start mine, I let it warm up a bit (until the RPM's drop back down to 1k) or until the fluid gauge below the RPM gauge is four or five lines warmed up. I haven't noticed any hard shifting or jumpy gears when I do that. Now when I'm in a hurry and I start it and just take off, I notice jumpy gears, its just cause the engines not warmed up properly, its getting all the fluids flowing again, etc. etc.
Def- let your car warm up, you don't have to sit there at idle for 20 minutes for your oil temp to warm up.....but good idea.

Anyone else have TPS low warning come on? It's 38 degrees out and my light has been on all week because of the differential
Reply
Old Nov 22, 2008 | 08:31 PM
  #6  
stash84's Avatar
stash84
Rookie
 
Joined: May 2007
Posts: 89
Likes: 0
From: miami, fl
Default

its never cold here but ive noticed it when my car is actually cold. i always warm it up. it only seems to "jump" once into second gear, once in a while and ONLY when i first get out on the road. after that, its fine..

how about it idling at around 500 rpms when the ac is off. has anyone experienced that?
Reply
Old Nov 22, 2008 | 08:32 PM
  #7  
Emarati_K's Avatar
Emarati_K
Lead Lap
 
Joined: Oct 2008
Posts: 416
Likes: 0
From: UAE
Default

I would say make it warm up, up to 15 minutes.
Reply
Old Nov 22, 2008 | 10:07 PM
  #8  
Salil022's Avatar
Salil022
Thread Starter
Instructor
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Dec 2004
Posts: 1,226
Likes: 22
From: Delaware
Default

yes i've noticed idling at 500 rpms...i also thought that was unusual...i brought it to dealer's attention and they couldn't reproduce the problem...Sometimes when the car is warm enough after the drive and you stop somewhere at a light or a complete stop....I hear some metal clicking sound from the engine and its coming from driver side of the engine... not sure what that is...definitely doesn't sound normal....Everytime i've taken car to a dealer, car will not reproduce the symptoms...Next time i am going to record the sound
Reply
Old Nov 22, 2008 | 10:57 PM
  #9  
chrisburke's Avatar
chrisburke
Lead Lap
 
Joined: Feb 2008
Posts: 716
Likes: 0
From: ca
Default

OMG so i go online tonight to post this about mine since i am having the same issues and its only happening in 2nd gear and then it goes away but its only like 65 degrees here. But i will still ask the dealer.
Reply
Old Nov 23, 2008 | 06:47 AM
  #10  
Salil022's Avatar
Salil022
Thread Starter
Instructor
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Dec 2004
Posts: 1,226
Likes: 22
From: Delaware
Default

Has anyone else noticed this metal sound when the car is fully warm after the drive...it almost sounds luke engine is starving for more oil
Reply
Old Nov 23, 2008 | 09:20 AM
  #11  
Just F Me's Avatar
Just F Me
Lexus Champion
 
Joined: Sep 2008
Posts: 2,284
Likes: 23
From: SoCali
Default

it's jumpy, but only for a bit...i warm up at least 5 mins then i drive it really carefully until the oil temp gets up at least 2 bars...3 bars is about as high as i've seen mine go
Reply
Old Nov 23, 2008 | 09:26 AM
  #12  
dbastidas0's Avatar
dbastidas0
Driver
 
Joined: Jun 2008
Posts: 167
Likes: 0
From: Miramar FL
Default

never heard metal sound...
Reply
Old Nov 23, 2008 | 09:32 AM
  #13  
BigMikeISF's Avatar
BigMikeISF
Lexus Champion
 
Joined: Jun 2008
Posts: 2,162
Likes: 10
From: Dallas, Texas
Default

Originally Posted by Just F Me
it's jumpy, but only for a bit...i warm up at least 5 mins then i drive it really carefully until the oil temp gets up at least 2 bars...3 bars is about as high as i've seen mine go
Run it hard and it will slowly get higher

Originally Posted by dbastidas0
never heard metal sound...
+1, never heard any metal clinking...
Reply
Old Nov 23, 2008 | 10:14 AM
  #14  
Salil022's Avatar
Salil022
Thread Starter
Instructor
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Dec 2004
Posts: 1,226
Likes: 22
From: Delaware
Default

will try to record the metal clinking sound...car still has the warranty so not really too worried
Reply
Old Nov 24, 2008 | 05:48 AM
  #15  
stash84's Avatar
stash84
Rookie
 
Joined: May 2007
Posts: 89
Likes: 0
From: miami, fl
Default

Originally Posted by Salil022
Has anyone else noticed this metal sound when the car is fully warm after the drive...it almost sounds luke engine is starving for more oil
i dont think that clicking sound is anything abnormal
Reply



All times are GMT -7. The time now is 04:21 AM.