Originally Posted by Trmn8

Immediately after my wife took her Crossfire in for the 15k mile service the DTC P0300 “Multiple Cylinder Misfire” appeared. So, she returned it to the Dealer (she has become accustomed to taking it in more than once for the same problem) who said they would get it fixed. When they returned the car, they said they had re-flashed the PCM and that the car was fixed.

When I drove the car a few days later, I noticed a hesitation in the acceleration when shifting gears (6 speed standard tranny). My wife said she felt it as well but wasn’t sure what was causing it. So, again she returned it to the Dealer. The tech took a ride with my wife, and afterwards said she didn’t know how to shift properly, there was nothing wrong with the car.

Therefore, I took the car in and repeatedly demonstrated the problem, of the car hesitating when shifting, and I was also told that I did not know how to properly shift the car. The tech said you could not place your foot on the clutch peddle until you were ready to depress the clutch and that you have to take your foot completely off of the throttle before touching the clutch peddle with your other foot.

Both my wife and I have driven standard transmissions for over 25 years and now all of the sudden we are incompetent and do not know how to shift properly? After a loud exchange with the tech in front of the Service Manager, I took the Tech Supervisor for a ride and showed him the problem. And, after a brief exchange with him the Dealer agreed to re-flash the re-flashed PCM again. I should relay at this point that the Tech Supervisor told me that the Crossfire was simply a production car and that if I expected sports car performance, i.e. the ability to speed shift etc., I should have purchased a Ferrari. Anyways, after the re-re-flash the problem is even worse. And, here’s the rub, the Dealer now says there is nothing wrong with the car and that we should learn how to shift properly.

So I ask, if you hold the throttle constant can you shift gears in your car without it hesitating? If you lightly tap the top of the clutch peddle will the acceleration remain constant? If you hold the throttle constant and press the clutch will the engine rev up or drop first then rev up? Can you depress the clutch about a half-inch, or all the way even, when driving without the engine hesitating? My wife’s Crossfire would rev up if you did this, now it decelerates and then revs up.

In my wife’s Crossfire if you lightly tap the top of the clutch while driving it will hesitate as if you had rapidly taken your foot completely off the throttle and then reapplied it to the same rate of acceleration. You cannot place your foot on the clutch and begin depressing the clutch, as your let off the gas, without the throttle dropping out before you completely disengage the clutch. In affect you get a quick hesitation (as the throttle automatically drops out), an acceleration (as the car realizes you have not disengaged the clutch yet), and then a de-acceleration as you press the clutch enough to make it disengage and let off the gas.

The car did not do this when we purchased it. It had not do this for the last two years we have driven it, it does it now after the re-flash and yet the Dealer says there is nothing wrong with it. The car shifted great (after the Dealer rebuilt the tranny) for the last year and all of the sudden, after the re-flash, it sucks to drive it. No car I have ever driven, with a standard transmission, has performed (are failed to perform) like this. Why can’t I make this Dealer understand what is wrong with the car?

I think when you touch the clutch the PCM is checking the cruise control and thinks the cruise is engaged so it is dropping the throttle to prevent an over-rev, but the cruise is not engaged so you get a hesitation at each shift instead.

Any advice or comments welcome, and thx in advance for any assistance provided.