[bobman]

I have a 2002 insight CVT with 97K. I notice today that when I accelerate hard the whole car shakes violently. If I back off a little bit then it stops. It's not the IMA because I can get the IMA to kick in without the shaking. It's only when I put it harder past initial IMA that I get it. This happens at low speed and higher speed.

I'm aware of EGR issues and I've experience that in the past at cruising speed. This feels a little different. Instead of it feeling like the transmission slipping, this feel more like the engine mount is broken. Neither of my analogies are true, just what it feels like.

I've read about throttle position sensors too? What do people think. I'm thinking about replacing the EGR, but I'm not sure if that'll fix it.

 

[Insightful Trekker]

Reads like an ignition misfire.

Time to do some coilpack and spark plug inspections.

HTH!

 

[jpyrz1]

I had mine in the shop today for a dead battery, and the tech noticed my violent shaking on his own (I've been experiencing it for a few months now, but have never brought it in to the dealer because the posts here have led me to believe it was a lost cause). Apparently my dealer (Fladeboe Honda in Irvine, CA) has had some experience with it, and they said the CVT fluid breaks down easily and needs to be replaced at least every 10k-15k miles. I haven't picked the car up yet to see if this has cured the problem, but it's at least worth a mention.

 

[jpyrz1]

Update


Changing the CVT fluid did the trick. After I got the car back yesterday, I ran it through every situation where the shuddering would kick in, and it performed perfectly.

If the solution to the "violent" shuddering was this simple, possibly there are different types of shuddering/hesitation that people are talking about?

Anyway, I'd say, before taking any valves out and blasting them with 3M cleaner, replacing sparkplugs, etc.... try getting the CVT fluid changed.