claydoctor
New member
Thanks, 4-RunnerRon but their basic position is until they get their own TSB they don't give a rat's a** about what Lexus has done.
Drive shaft noise or U joint noise (LEXUS 4/06 TSB page 18) aka Driveshaft thump/bump
- Thread starter rorad
- Start date
Has anyone noticed a connection between the clunk and the air conditioner??
I've started watching the tach after I stop at a red light, and I've noticed that the clunk is connected to a sudden change in RPM, and I think that's caused by the A/C compressor switching on and off.
Those of you not experiencing the clunk - could your A/C be off?
Or, has anyone noticed this problem is more prevalent in the summer?
I know that in the past Toyota has cycled the compressor on and off while stopped with the auto trans in "D" in order to prevent the engine from overheating. Years ago, I'd put the trans in "P" if I had to sit somewhere for a while in order to keep the A/C going.
I've started watching the tach after I stop at a red light, and I've noticed that the clunk is connected to a sudden change in RPM, and I think that's caused by the A/C compressor switching on and off.
Those of you not experiencing the clunk - could your A/C be off?
Or, has anyone noticed this problem is more prevalent in the summer?
I know that in the past Toyota has cycled the compressor on and off while stopped with the auto trans in "D" in order to prevent the engine from overheating. Years ago, I'd put the trans in "P" if I had to sit somewhere for a while in order to keep the A/C going.
Yes my clunk is more pronounced with the AC on and it is indeed from the AC compressor cycling. With the air conditioner off, it will still clunk but is much softer and not as noticeable. Bottom line is it still shouldn't clunk or all drivelines would do it to some degree.
Has anyone priced the parts? I hate to buy the parts and have them installed if some people are getting them fixed under warranty. If we can get some people to get theirs fixed with the new parts, maybe we can get some legal legs to stand on and get all our of 4Runners fixed. I am going to take it back until it is 3 times and still not fixed then start lemon law proceedings. I won't get a new truck or buy back but I will get a settlement like I did with my GTO and then I will buy the parts and have them installed or trade the stupid thing on a Honda.
"What if they Refuse to Repair?
If the dealer refuses to repair your vehicle, you may also have a Lemon Law claim. The manufacturer has given a warranty, which in most circumstances, requires the dealer to do repair work. If the dealer and/or the manufacturer then refuse to do the repair work, you may have a claim under the Lemon Law, Federal Warranty Law and/or other laws. "
Isn't saying " it is normal" refusing to repair? If it was normal wouldn't most or all 4x4's do it? Lubing it is not repairing especially when there is a defect with the current parts and new replacement parts are available. I am going to give them a chance then talk to an attorney if I can't work it out with the dealer or Toyota. Maybe we can get a class action started. I don't know what that all entails but a consumer law attorney will.
If the dealer refuses to repair your vehicle, you may also have a Lemon Law claim. The manufacturer has given a warranty, which in most circumstances, requires the dealer to do repair work. If the dealer and/or the manufacturer then refuse to do the repair work, you may have a claim under the Lemon Law, Federal Warranty Law and/or other laws. "
Isn't saying " it is normal" refusing to repair? If it was normal wouldn't most or all 4x4's do it? Lubing it is not repairing especially when there is a defect with the current parts and new replacement parts are available. I am going to give them a chance then talk to an attorney if I can't work it out with the dealer or Toyota. Maybe we can get a class action started. I don't know what that all entails but a consumer law attorney will.
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Here is a website of a law firm that deals with class action lawsuits. Like I said, I am going to give them a chance, but after that I am seeking legal help. We should get the TSB as well.
http://www.schneiderwallace.com/ContactForms/Consultation-ClassActions.htm
http://www.schneiderwallace.com/ContactForms/Consultation-ClassActions.htm
centralparunner
New member
The thud/klunk is really annoying for what would be a great truck.
I have taken the Lexus TSB to the dealer and they say they can't do a thing until Toyota wakes up. So out comes the grease gun to TRY and numb the sensation.
If there is no resolution from toyota soon, I would consider participating in a class action.
BTW, thanks for the Lexus TSB posting!
Cheers
I have taken the Lexus TSB to the dealer and they say they can't do a thing until Toyota wakes up. So out comes the grease gun to TRY and numb the sensation.
If there is no resolution from toyota soon, I would consider participating in a class action.
BTW, thanks for the Lexus TSB posting!
Cheers
Cthusker
New member
My dealer says the same thing! He looked at the Lexus TSB like it was coated with anthrax! They really didn' read it because he said... oh well.. that's Lexus! I said yes.. they are actually fixing their customers SUV as opposed to this GREASING BS!! They've done it 3 times on mine and it's usually good for less than a 100 miles. If I want to get screwed with my pants on I don't need to do it at my Toyota dealer........ I would also be interested in joining a class action... I'm sick of talking to Toyota dealers that know there is problem and won't fix it properly! SECOND CLASS CITIZENS compared to Lexus customers... OH well..centralparunner said:
Cthusker
New member
I agree... but 40 grand ought to buy you a little something or than lip service from the dealer. Lexus found a way to take care of their customers.... I don't believe Toyota has even tried so far.Thai said:Well, it's more like first class vs. coach on airplanes...they get shrimp cocktails and salmon...you get one freaking bag of peanuts!!You get what you pay for...btw, i a coach kinda person.
Cthusker
New member
Thai said:
I sure hope you're right! I've been a loyal Toyota customer for 15 years. SUV, pickups and cars! If they don't make this one right I will never buy another one. They make a hell of product but ther is no excuse for this to have gone on this long. Time will tell if they're going to do the right thing...........
It was somewhat cooler this morning so I decided to experiment and turn off the AC on my way to work. Guess what? I never once felt any thud. I am going to do the same thing on my way home and really try and see if I notice the smallest clunk or thud. I know I have felt it before without the AC off but it is much more frequent and pronounced with it on. How could the AC compressor cause such a variation in RPM that it causes a thud that is strong enough that it feels like you were rear ended?
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You know... funny that you noticed. Ok... so the A/C problem I had originally asked the board... no one else noticed it!!!! When you come to a stop and your A/C is still running, the engine will be around 800 RPM... then when the A/C cycles, the RPM drop to 500 and the thud occurs.. YES.. when the A/C cuts off the thud is more pronounced. Well, as you all remember... I filed a case with Toyota and my truck is in the shop right now... I will let you all know what is decided!!
The computer system is varying the engine RPM to compensate for the drag created when the compressor is running.
But I don't know how that change in RPM is creating enough torque to get all the way through the driveshaft and cause the clunk sensation with the brakes applied.
Call me skeptical, but changing the driveshaft just doesn't sound like the complete solution to me.
But I don't know how that change in RPM is creating enough torque to get all the way through the driveshaft and cause the clunk sensation with the brakes applied.
Call me skeptical, but changing the driveshaft just doesn't sound like the complete solution to me.
And from what the Lexus owners and the guys with the fix on here, it doesn't totally make it go away rather lessens it. So maybe it isn't the propeller shaft afterall and maybe that is why they haven't issued the TSB for Toy yet. Like I said, I will try it on my way home which will consist of many more stops than coming into work cause of the traffic and stop lights. I will have more of a chance of feeling any thuds when I drive home.
I always noticed it. I will be sitting at a stoplight say 30-40 seconds after I have stopped completely and then it feels like a hit from behind. With the AC off there is no more of that. I swear though I remember in the winter coming to stops and feeling as though the tranny was shifting into 1 after coming to a complete stop. There was still a slight thud but not like someone hit me from behind.
Thank God for this board and the internet where we can all get together and share information and concerns.
I always noticed it. I will be sitting at a stoplight say 30-40 seconds after I have stopped completely and then it feels like a hit from behind. With the AC off there is no more of that. I swear though I remember in the winter coming to stops and feeling as though the tranny was shifting into 1 after coming to a complete stop. There was still a slight thud but not like someone hit me from behind.
Thank God for this board and the internet where we can all get together and share information and concerns.
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Ok... if you want to replicate it... I have got it down to a science... keep your A/C running, when going downhill or a downgrade, come to a complete stop, then watch the tachometer... if it is at 500 then redo the steps until the tach reads 800 or so when you stop... then wait for the A/C to cycle... around 5-10 sec ... at which time you should feel the "larger thud"....
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