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Acceleration Problems after Dealer Oil Change

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Old 04-01-14, 09:06 PM   #61
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Well it hasn't improved at all. It cruises just fine on the freeway and responds well to throttle. But from a stop and up to about 40 mph......Yikes. I took it to a local Toyota dealer and the service advisor went for a ride with me. He agreed there's a problem. He advises to make an appt and have them hook up to Techstream. There's also a noise associated with the symptoms. It's sort of like a rattle or vibration from the exhaust (I think). He heard it too. He wonders if the exhaust is plugged. He said if it were his car, he'd disconnect the tailpipes and see of the prob goes away. For now, I'll see if the issue goes away after a few more days. FWIW, I hooked up a code scanner and there are no codes, nor are any pending. The trans also has no codes. This is why he suspects exhaust. If it were ping, timing related (or fuel, etc) it would set a code.
I advise you to take it to the nearest Lexus dealership period! I would not deal with the Toyota service rep, based on that conversation sounds like a Jiffy Lube rep. Seriously the LS is not a simple car (Very complex machine) we are talking about a 80K plus car that needs a tech with the right knowledge to diagnosis your issue properly.
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Old 04-07-14, 09:02 AM   #62
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Has happened to me too. Uncouple your positive battery cable for 30 minutes. Has worked every time for me.
Hard to believe that an oil change could lead to that, but my experience shows it's not a coincidence
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Old 05-10-14, 11:44 AM   #63
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Has happened to me too. Uncouple your positive battery cable for 30 minutes. Has worked every time for me.
Hard to believe that an oil change could lead to that, but my experience shows it's not a coincidence
Have seen same sort of funny electrical behavior in late 90's 3-series BMWs.
What you're doing with 1/2 hour disconnect is taking charge off any and all the capacitors in the system.
Quicker (and maybe more sure) way - if you like - is to pull (+) and (-) cables, and once
disconnected from battery
, touch one to the other. You're now sure all charge is gone.
Has worked for me on my old 328 convertible.
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Old 05-18-14, 03:53 PM   #64
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Jesus Christ, at least I'm not alone.

Had my first oil change performed 2 days ago, and noticed the car is extremely slow when accelerating. When pressing the accelerator, it feels like the car weights 10 tons or more - the engine starts making a loud noise (like it always used to) but it takes 3-5 seconds for a real acceleration to begin.

Hope it will fix itself after driving for some time.
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Old 05-18-14, 04:05 PM   #65
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Yeah it's all seriously f'd up. Wish somebody had an answer to this.
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Old 05-18-14, 05:38 PM   #66
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I heard the problem was that people wasn't putting the correct grade of oil in the car. I think people were going with synthetic oil not what the manufactor suggest.
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Old 05-18-14, 08:32 PM   #67
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I definitely went with synthetic. Interesting...
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Old 05-18-14, 10:09 PM   #68
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Knocking on wood but ive used synthetic on my first oil change no problems are you guys using the 0-20 or the 5????
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Old 05-19-14, 03:08 AM   #69
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I use 5W30 since this type of oil was used by dealer previously.

By the way, I noticed the same thing as some other people: the car is responsible when driving at higher speeds, but accelerating at lower speeds is mission impossible.

I also noticed (did some tests during weekend) that my car still accelerates very well at low speeds when it's cold. If I start the engine after night, no problems at all. However, acceleration problem occurs several minutes later.
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Old 05-19-14, 03:24 AM   #70
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Interesting.... well for economy purposes you can use 0w-20w. But I have did one oil change myself and havent experienced this. Just curious if this oil weight related or not...
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Old 05-19-14, 07:12 AM   #71
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5W20 synth for me. That's what's on my cap and what was used by my dealer previously.

MANXP: are you sure it's 5w30 and not 5w20?? That weight is not recommended by Lexus.

For gits and shiggles I'm going to try non synth at my next change. I'll be shocked if it has any effect, but worth a go.

I will also try and reset my ECU by disconnecting the battery. However, it's my understanding that this will not reset it as there is a built in power supply (much like a computer motherboard has).
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Old 05-19-14, 07:26 AM   #72
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Just checked old bills, and yes, Lexus dealer used 5w30. Here's a screen from my user manual with allowed oil types
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Old 05-19-14, 07:47 AM   #73
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Ahhh..... Euro market. OK.
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Old 05-20-14, 02:17 AM   #74
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Drove car like crazy yesterday (high revs, burning tires whenever possible) and the problem seems to be gone now.
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Old 05-20-14, 05:02 AM   #75
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its good to take it on the freeway on ramps and get on it... from time to time..
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Old 05-20-14, 05:02 AM
 
 
 
 
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