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Automatic shifting and shaking?

Tiny
MIKE4321
  • MEMBER
  • 2015 JEEP PATRIOT
  • 2.4L
  • 4WD
  • AUTOMATIC
  • 50,100 MILES
Sometimes, it seems random, because it's normal sometimes, so, randomly for about a few weeks now, I've noticed that my RPMs are going way up to 4,000 before shifting into like 4th or fifth or 6th gear. And then it drives normal again the next day.

Also, the whole vehicle or maybe just the steering column is shaking. I thought it was the tire pressure in the one wheel because my Tire Pressure Indicator was on, but I had it serviced yesterday and then it happened again today.

These 2 issues occur simultaneously and then not occurring at all during other drives.
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Monday, January 2nd, 2023 AT 12:18 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
Hi,

This vehicle has a CVT transmission. It is different from a traditional transmission. It functions similarly to the pulleys on a snowmobile. Most CVT systems work through a pulley system, so it doesn't shift gears. Instead, the pulleys increase or decrease the belt diameter to change gear ratios. If you are having the engine rev without acceleration, there could be an internal issue.

The first thing I would like you to do is have the transmission fluid condition and level checked. To do this, it requires a dipstick that was provided by the manufacturer to dealerships, or if you can find one online aftermarket. The dipstick tube for the transmission on your vehicle will have a plastic cap covering it. Is this something you could have done or was it done when serviced?

Also, I need to know if the check engine light is staying on while the engine is running.

One last thought. I realize the 5-year or 100-K-mile powertrain warranty has expired. However, at 50K miles, I personally would be contacting Chrysler for some type of assistance if it becomes a major repair. Most CVT transmissions are replaced rather than repaired. It's just a thought.

Let me know.

Joe
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Monday, January 2nd, 2023 AT 7:54 PM
Tiny
MIKE4321
  • MEMBER
  • 3 POSTS
My paperwork from the dealer says that I have the 6-speed Automatic Transmission w/ the Auto-stick, not the CVT. And my Manual states that I shouldn't need any Transmission servicing until maybe 120,000 miles.

The only light that was on was the Tire Pressure light which shut off after I had the servicing this last week. I did a full inspection at a Firestone and then at the end when I asked how the Transmission looked they informed me that they no longer deal with transmissions.

I purchased this Jeep a year and a half ago at 41000 miles. Is it possible that the Dealer gave me an inaccurate set of Vehicle Specs? The vehicle specs say "Transmission: 6-speed Automatic" and "Autostick Automatic Transmissions Tip Start".

Are you meaning to say that Chrysler might assist me with the repair financially or are you saying that they are your recommendation for servicing?
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Monday, January 2nd, 2023 AT 10:24 PM
Tiny
MIKE4321
  • MEMBER
  • 3 POSTS
I drove to work and back again today, and it was perfectly normal.
Do you have different information for the 6-speed Automatic Transmission? I've found that the Transmission is inaccessible under the hood. There's no reservoir. I think it's accessed from underneath the vehicle.
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Tuesday, January 3rd, 2023 AT 12:38 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
Hi,

You are correct. The standard equipment transmission is a CVT. This vehicle was upgraded.

As far as the shift issue, my first suspect is the transmission control module (TCM) needs to be flashed/reprogrammed with the most up-to-date information. I was able to find a technical service bulletin specific to a delayed shift.

I attached the TSB below. Mention this to the shop and let me know what they say.

Take care,

Joe

See pics below.
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Tuesday, January 3rd, 2023 AT 8:35 PM

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