Hesitation after oil change. Maybe solved?!?
04-19-18, 02:11 PM
#31
Driver School Candidate
Not loving my LS
Ever since my last oil change a few months/a few thousand miles ago, I've been having the acceleration issue intermittently on my '07. Sometimes, it'll be gone for a week then it'll come back. It came back yesterday on my way home from work. Punch the gas and it's like it's the horsepower is cut in half. It is EXTREMELY frustrating. But kinda like the saying goes, "we've tried nothing and we're all out of ideas". I haven't tried roadfrog's suggestion of an oil treatment yet (waiting until my next oil change but that may come early) or ECU update at the dealer. I hate to spend the money on the update and it not work. I've heard mixed reviews. I'm considering selling the car and there is no way it can be sold with this issue! As far as I know, the car has always ran full synthetic . Does anyone have a definitive solution?
04-19-18, 03:49 PM
#32
Lexus Fanatic
Ever since my last oil change a few months/a few thousand miles ago, I've been having the acceleration issue intermittently on my '07. Sometimes, it'll be gone for a week then it'll come back. It came back yesterday on my way home from work. Punch the gas and it's like it's the horsepower is cut in half. It is EXTREMELY frustrating. But kinda like the saying goes, "we've tried nothing and we're all out of ideas". I haven't tried roadfrog's suggestion of an oil treatment yet (waiting until my next oil change but that may come early) or ECU update at the dealer. I hate to spend the money on the update and it not work. I've heard mixed reviews. I'm considering selling the car and there is no way it can be sold with this issue! As far as I know, the car has always ran full synthetic . Does anyone have a definitive solution?
04-20-18, 12:20 PM
#33
Driver School Candidate
I had the same issue with hesitation but once i had my water pump and the radiator replace the problem stop been over 10k miles hesitation gone im not sure if it just went away on it own or because of the replacement
04-20-18, 01:09 PM
#34
Driver
Thread Starter
So I’m this OP for this post. Let me tell you about my experience. I got an oil change from the dealership and looked at the receipt only to find out that they also added an additive called Wynn oil conditioner. After this my hesitation started. I basically dogged my car on the interstate (drove it HARD in manual). The problem went away and hasn’t came back since. I’ve since gotten another oil change and refused the conditioner and my car has been running fine since.
04-22-18, 07:04 PM
#36
Again, this issue crops up IMMEDIATELY after an oil change. In my case, it was within a few blocks of driving and then disappeared after a few days or several hundred miles. Then, the next oil change later - hesitation. This happened to me 3 times on three oil changes, before I sorted it out.
04-22-18, 07:15 PM
#37
This is just a theory...
Could it be because of air in the oil filter causing hesitation until oil makes to the filter?
Should oil filter be pre-filled before installation. I have heard of several people doing it on other cars.
Could it be because of air in the oil filter causing hesitation until oil makes to the filter?
Should oil filter be pre-filled before installation. I have heard of several people doing it on other cars.
04-22-18, 07:38 PM
#38
Cannot do this on a LS. Its a replaceable cartridge.
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DrQuality (08-11-21)
05-14-18, 06:38 PM
#39
I did my first oil change this weekend. I do not know when exactly previous owner changed oil/filter but based on oil light it must have been 5500 miles ago. Oil out was supposed to be Mobile 1 Full Synthetic. Filter was Mobile 1 filter. Nice with cartridge filter to be able to see the brand and condition.
I used to get diesel like sound before. After the oil change noise is almost gone. I have tried to hear it from the cabin but it is hardly there or maybe even gone completely.
I was prepared for some hesitation but there is none.
I used Pennzoil Platinum Full Synthetic 0W-20 with K&N filter if that matters.
I thought I would share a positive experience with the oil change.
Only negative thing is that the filter drain cap just would not budge. Some more force and the whole filter housing come out. I tried getting that piece out later but it just wouldn't budge. PO must have really tightened it. I would have preferred to drain the oil before removing the housing but not end of the world.
I used to get diesel like sound before. After the oil change noise is almost gone. I have tried to hear it from the cabin but it is hardly there or maybe even gone completely.
I was prepared for some hesitation but there is none.
I used Pennzoil Platinum Full Synthetic 0W-20 with K&N filter if that matters.
I thought I would share a positive experience with the oil change.
Only negative thing is that the filter drain cap just would not budge. Some more force and the whole filter housing come out. I tried getting that piece out later but it just wouldn't budge. PO must have really tightened it. I would have preferred to drain the oil before removing the housing but not end of the world.
05-15-18, 06:06 AM
#40
Pole Position
A couple of Lexus oil changes ago, when I drove home, I had no speed whatsoever. I could press the pedal down to the mat and get nothing. Turned the car around, went back, they did some update to the CPU or thereabouts (I'm not technical), and it drove fine afterwards. The biggest downfall from that day: Lexus washed my car. Had I not had the problem, I'd have been home before it rained.
05-16-18, 08:47 AM
#41
Lexus Fanatic
I did an oil system cleaning with Toyota's Engine Oil System Cleaner (which apparently isn't readily available in the US). My local dealer carries it. After using it according to directions, I replaced my oil with TGMO 0W20. This is now approx 4 years ago, and haven't had the issue since. FWIW, that's about 10 oil changes. Previous to this treatment, the issue appeared right after EVERY oil change and lasted about 500 miles before it cleared up. It provided for some very dangerous driving conditions - especially when turning across traffic. Almost got broad-sided a couple of times.
05-19-18, 06:07 PM
#42
I did my first oil change this weekend. I do not know when exactly previous owner changed oil/filter but based on oil light it must have been 5500 miles ago. Oil out was supposed to be Mobile 1 Full Synthetic. Filter was Mobile 1 filter. Nice with cartridge filter to be able to see the brand and condition.
I used to get diesel like sound before. After the oil change noise is almost gone. I have tried to hear it from the cabin but it is hardly there or maybe even gone completely.
I was prepared for some hesitation but there is none.
I used Pennzoil Platinum Full Synthetic 0W-20 with K&N filter if that matters.
I thought I would share a positive experience with the oil change.
Only negative thing is that the filter drain cap just would not budge. Some more force and the whole filter housing come out. I tried getting that piece out later but it just wouldn't budge. PO must have really tightened it. I would have preferred to drain the oil before removing the housing but not end of the world.
I used to get diesel like sound before. After the oil change noise is almost gone. I have tried to hear it from the cabin but it is hardly there or maybe even gone completely.
I was prepared for some hesitation but there is none.
I used Pennzoil Platinum Full Synthetic 0W-20 with K&N filter if that matters.
I thought I would share a positive experience with the oil change.
Only negative thing is that the filter drain cap just would not budge. Some more force and the whole filter housing come out. I tried getting that piece out later but it just wouldn't budge. PO must have really tightened it. I would have preferred to drain the oil before removing the housing but not end of the world.
05-21-18, 02:30 PM
#43
I just think these engines are noisy. I let my LS 400 run for a little while today since I don't drive it and you can barely hear it running unless you walk real close. My 460 sounds like a diesel too from 15 feet away. My GS is noisy also.
Last edited by sha4000; 05-21-18 at 04:16 PM.
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