So I have been having a strange acceleration dip when accelerating from a stop. More noticeable when autostop is engaged. While at autostop I will accelerate like normal then RPM will dip a couple hundred of RPM without me taking my foot off the gas or decelerating. Usually happens at about 1,000-1,500RPM and will dip 200-400rpm. The dip is only once, no jerking or bucking, just dips like I would take my foot off the gas but I don't. Almost feels like the car is stalling and die, but has never actually stalled on me.

I have recently, adjusted the valves, replaced spark plugs, replace air filter, and replace engine/transmission oil, I cleaned my EGR valve with carb cleaner and replaced EGR gasket, but it still hasn't helped. Any suggestions?

 

Also I might add I think my starter clutch if going bad. I have the vibration at a stop with normal acceleration, do you think this might be related?

 

I've never experienced that, but I wonder if it might be CVT belt slippage:

http://ww2.justanswer.com/uploads/th...ansmission.pdf

 

Update. So I finally caved in and brought my car into Honda to check out. Since my transmission was replaced when I was about about 100k. I thought my 30k miles warranty was over, turns out it has a 36k miles warranty!!! Which give me about 3k wiggle room. But the dealer tried to pull a fast one on me saying they need to change starter clutch, burnish and change tranmission fliud. Which would cost me $1400, ouch!

After bit of explain how I think since the starter clutch is part of the transmission and should be covered under warranty. He says he need approval from his manager who is out today and will get back to me tomorrow. Fingers crossed!!!

 

Another update.

So after a bunch of back and fourth with Honda, they finally decided to replace the start clutch under my transmission 3year/36kmiles warranty. Not sure why they declined it in the first place, but they decided to accept it now. So they currently working on the car and hopefully they will be done by Friday and I will know if that solve my judder and dip problem. Glad I was still in the warranty if not it would have cost me 2k to get fixed! YIKES!

 

Got car back from Honda, replaced start clutch solved judder problem and acceleration dip. Drove all the way to work in stop and go traffic and it every seem fine! Yah hopefully this last cause now I do not have any warranty anymore.