I am having the same problem right now myself. Exactly the same problem.

I have heard different opinions on this matter.

1). TCC

2). Severly clogged cat /causing a misfire

3). Bad plugs and/or wires/also causing a misfire condition

4). Fuel filter

I've got a major tune-up planned for a couple week away, New plugs, Wires, etc....

Hoping to find the problem and cure it.

Hope this helps,

Tim

I would agree in saying that yes, it does start right about when I enter boost.....interesting....

Been out of town, so it has taken me a while to get back on this.

I tried tapping the brakes during acceleration and it had no effect. I will have to check the boost guage to see what it reads, but I am pretty sure it happens right at the time the needle moves.

What will a boost bypass test tell me ?


Bonnevilelmac - I had my CAT replaced 4 months ago and also changed out the plugs, wires, fuel filter, trans fluid, all of which had no effect.

My curiosity has been aroused again. Assuming the worst and it is TCC how bad of a job is this to fix and how expensive is it??



Thanks,

Tim

It will tell you whether or not your boost control solenoid is the problem.

Well, I found out what my problem was THE HARD WAY.

I was on vacation driving down off of a mountain in the Smokey Mountains and the transmission started shutter and slip very bad. I am convinced that my car is evil and waited for its chance to crap out at the worst possible time for me.

I was able to get it into a local tranny shop, who got me in the same day. They pulled the pan and found pin bearing rollers in the bottom of the pan. After pulling the tranny and opening it up, they found a mess. Bearings in pieces, a slightly bent shaft, and one gear with worn and broken teeth.

2 days later, I had a rebuilt tranny and a $3K invoice to pay. I know it would have been cheaper if I was not stuck in the Smokey Mountains and at the mercy of the local shop.

As best I can figure, the pressure control solenoid was bad. The pressure was not strong enough and every time the TTC tried to lock up, it would skip on the plate and cause the jerking. Over time, this jerking put alot of stress on the internals, which eventually failed.

If you have this problem, get it into a shop before the internals get damaged (and definitely don't drive in the mountains until you have it fixed).

Now, I am having a problem with the rebuilt transmission, but I will post a separate topic on that.

Sorry to here bud, how many miles on car.

It has 112,000 miles on it.