Transmission Problem: Funky shifting and harsh reverse
09-02-12, 07:46 PM
#1
Lexus Champion
Thread Starter
Transmission Problem: Funky shifting and harsh reverse
https://www.clublexus.com/forums/is-...lem-w-isf.html
^^^So I did a search, and this is about the closest mine comes to. My car shifts ok...just not smooth like it used to. Mine reverses, but its almost like the car doesn't deliver the power through the drive train...
I have a 2008 IS F, 87k miles...I drove it this weekend from Socal to Yosemite (360ish miles), and it drove perfectly. Ran it pretty hard through the twisties. It was fun and drove perfectly fine. Two days later, i drive again, and I run into some problems.....
When i put the car in reverse...it doesn't reverse unless I give it gas and when it does, its crazy rough. Almost like if the you're on a ton of gravel and you give it gas...the car just slips.
When you shift between P -> R -> N -> D, you can actually hear the shifts, it doesn't sound smooth anymore.
During a drive, it will go from 1st to 2nd pretty quickly...power delivery is not smooth at all. 5th gear holds for awhile until it goes to 6th, 7th, and 8th even though i'm doing over 45mph. If you push it hard in Drive Mode, it will go from 6th to 7th, but in-between the gears, it revs the engine before it actually goes into 7th gear.
I've resetted the ECU, but I'm not sure if this is a mechanical problem or an electronic problem???
I'm 40 miles from the closest Lexus dealership and lucky my car still drives...just doesn't operate very smoothly...But I'm also almost 500 miles from home. Tomorrow is labor day, and I got tons of work to do up here in the bay area before I go home at the end of the week
^^^So I did a search, and this is about the closest mine comes to. My car shifts ok...just not smooth like it used to. Mine reverses, but its almost like the car doesn't deliver the power through the drive train...
I have a 2008 IS F, 87k miles...I drove it this weekend from Socal to Yosemite (360ish miles), and it drove perfectly. Ran it pretty hard through the twisties. It was fun and drove perfectly fine. Two days later, i drive again, and I run into some problems.....
When i put the car in reverse...it doesn't reverse unless I give it gas and when it does, its crazy rough. Almost like if the you're on a ton of gravel and you give it gas...the car just slips.
When you shift between P -> R -> N -> D, you can actually hear the shifts, it doesn't sound smooth anymore.
During a drive, it will go from 1st to 2nd pretty quickly...power delivery is not smooth at all. 5th gear holds for awhile until it goes to 6th, 7th, and 8th even though i'm doing over 45mph. If you push it hard in Drive Mode, it will go from 6th to 7th, but in-between the gears, it revs the engine before it actually goes into 7th gear.
I've resetted the ECU, but I'm not sure if this is a mechanical problem or an electronic problem???
I'm 40 miles from the closest Lexus dealership and lucky my car still drives...just doesn't operate very smoothly...But I'm also almost 500 miles from home. Tomorrow is labor day, and I got tons of work to do up here in the bay area before I go home at the end of the week
09-02-12, 08:23 PM
#3
Lexus Champion
Thread Starter
What's MIL stand for? No codes though...no lights, nothing.
I wonder how much parts / labor is gonna cost?
I don't have my service manual with me and I shut off my server at home...bah
I wonder how much parts / labor is gonna cost?
I don't have my service manual with me and I shut off my server at home...bah
09-03-12, 07:22 AM
#6
Lexus Champion
Even if you don't have any lights it could have stored a code. I'd prob get it scanned for free at an auto parts place just to see whats up.
If not ...dealer time
If not ...dealer time
Trending Topics
09-03-12, 10:00 AM
#8
Lexus Champion
Thread Starter
When you buy a high milage car, there are risks, but obviously, there's tons of savings. This is my first problem I've ever had with the car that I would consider major. First problem was the sunroof, 2nd was a blown subwoofer. Not bad for 87,000 miles.
09-03-12, 10:38 AM
#9
Lead Lap
Join Date: Feb 2012
Location: Bay Area/ Valley/ So. Cal
Posts: 552
Likes: 0
Received 2 Likes
on
2 Posts
Heh...it's just wear and tear (i hope). I started the car this morning, waited for the warm up like I usually do, and it actually drives fine. Reverse still is no bueno....so...looks like its' going to be the shift solenoid. Dropping it off at the dealership tomorrow in Sacramento and hopefully I get a loaner car so I can go finish off the rest of my work. Gonna have them replace my tranny fluid while its in there.
When you buy a high milage car, there are risks, but obviously, there's tons of savings. This is my first problem I've ever had with the car that I would consider major. First problem was the sunroof, 2nd was a blown subwoofer. Not bad for 87,000 miles.
When you buy a high milage car, there are risks, but obviously, there's tons of savings. This is my first problem I've ever had with the car that I would consider major. First problem was the sunroof, 2nd was a blown subwoofer. Not bad for 87,000 miles.
LP is good at giving loaners I even got one for a oil change, just have to tell them ahead of time and if its a bigger service you'll get one regardless...
09-03-12, 01:35 PM
#10
Instructor
To me it sounds like you were too hard on the trans and the clutch pack material is all though your trans right now. Had this exact same issue way back on my aristo after taking it to the drags one... two... ok way too many times 
Anyways, probably needs a flush filter, (maybe solenoid) and new clutch packs....
I'm about to take mine in for a flush even though lexus doesn't say it needs it because I'm going to head to a lapping session and drag strip soon...
Anyways, probably needs a flush filter, (maybe solenoid) and new clutch packs....
I'm about to take mine in for a flush even though lexus doesn't say it needs it because I'm going to head to a lapping session and drag strip soon...
09-04-12, 07:19 PM
#12
Lexus Champion
Thread Starter
OK....the worst possible scenario has happened. Took the IS F to Lexus of Sacramento today and they said it needs a new tranny... 87,000 miles, I do not have an extended warranty), and it's $11000 for a new transmission and they don't know when they'll get one until they actually put the order in for one.
If I buy a rebuilt, they don't know when that's going to arrive either,...could be 30-60 days and they don't have one in the country.
I'm at a point where I don't even know what to do now...lol.
If I buy a rebuilt, they don't know when that's going to arrive either,...could be 30-60 days and they don't have one in the country.
I'm at a point where I don't even know what to do now...lol.
09-04-12, 07:24 PM
#13
Lead Lap
Join Date: Feb 2012
Location: Bay Area/ Valley/ So. Cal
Posts: 552
Likes: 0
Received 2 Likes
on
2 Posts
OK....the worst possible scenario has happened. Took the IS F to Lexus of Sacramento today and they said it needs a new tranny... 87,000 miles, I do not have an extended warranty), and it's $11000 for a new transmission and they don't know when they'll get one until they actually put the order in for one.
If I buy a rebuilt, they don't know when that's going to arrive either,...could be 30-60 days and they don't have one in the country.
I'm at a point where I don't even know what to do now...lol.
If I buy a rebuilt, they don't know when that's going to arrive either,...could be 30-60 days and they don't have one in the country.
I'm at a point where I don't even know what to do now...lol.
Last edited by MjThind; 09-04-12 at 07:28 PM.
09-04-12, 08:06 PM
#14
Instructor
I would say, find a local transmission dealer.
100% they can rebuild the clutch packs (mister transmission or something), put a new filter in and have you on your way. I'm almost SURE nothing else is wrong.
It probably isn't working because you can't get enough line pressure to the reverse...
100% they can rebuild the clutch packs (mister transmission or something), put a new filter in and have you on your way. I'm almost SURE nothing else is wrong.
It probably isn't working because you can't get enough line pressure to the reverse...
09-04-12, 08:13 PM
#15
Lexus Test Driver
I mean with lexus amazing build quality and seeing that there are so many high mileage ISF it seems weird to be that you would have a complete trans failure and need a new trans. I feel for you man. I hope its something simple.