Q: My car is jerking from 2nd to 3rd gear and downshifts. Will jerk a little

asked by on

After a little driving my car will jerk from 2nd to 3rd gear and downshift. It will jerk a little too. Sometimes it will smooth out on the highway and sometimes it won't do it at all. They hooked it up to the computer and got a code for P0661 but I can't seem to understand why that would affect it. My transmission was rebuilt 45000 miles ago and it's been on and off like this for a year and a half and I already performed a fluid change and filter. Any help would be greatly appreciated.

My car has 230000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. Your car has what is called a secondary shifter valve or solenoid valve that is operated or directed by the PCM (Powertrain Control Module) which is what controls the drivetrain and transmission. Code P0661 is related to this and is what is causing the jerking between shifts. This can happen when the solenoid itself is bad or faulty or simply due to a poor connection or shorted harness. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car is jerking from 2nd to 3rd gear and downshifts. Will jerk a little

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2004 Range Rover does not engage and move when shifting

Your car has an electronically controlled transmission, So any shifting decisions are made by the transmission controller. It could be that your controller is not giving the drive command, or it could be that there is a solenoid or other...

Q: I just got my transmission replaced, and then my check engine light comes. Could that have something to do with the light?

Hey there, thanks for writing in about your 2003 Honda Accord. If you had your transmission just replaced, then your light may be on for the transmission. The light could still be on for another reason. I would have the...

Q: The motor runs good but the master cil yder look low and liquid

Hi there. I'm not quite sure as to what you're asking, but if your master cylinder (brakes) is low on brake fluid, it's possible that you have a brake leak somewhere that should be located and repaired as soon as...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...