2005 Pontiac G6 no overdrive

Tiny
JOHN FELTROP
  • MEMBER
  • 2005 PONTIAC G6
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 126,000 MILES
My wife's car shifts perfectly until it hits the overdrive and it's like it went to neutral. I checked the fluild level which was good.
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Monday, November 2nd, 2009 AT 6:03 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Has the check engine light come on?
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Wednesday, November 4th, 2009 AT 9:18 PM
Tiny
JOSHMAHONEY94
  • MEMBER
Bump.

Same sort of issues as described, her are some details.

My vehicle is a 2005 Pontiac G6 with 180k miles. I just recently purchased it as a commuter car. I drive 200 miles a week in this car to and from work. About once a week a will get this odd pulsating/shutter(du du du du) noise/feeling when I am accelerating in 3rd or 4th gear. It has never happened in any other gear and only happens in 3rd when it is about to switch to 4th. The motor runs well, so I am thinking that this is likely a transmission issue. However that Catalytic converter is worn out, so I am thinking that this could POSSIBLY explain this.

To be clear, whenever I am cruising about 55MPH in 4th gear at 1500RPM and I decide to punch it, I will usually get that noise/feeling. If I let off of the accelerator for a few seconds and then lightly accelerate, it is fine. If I am cruising at 75MPH and accelerate to 3000-4000RPM, it will generate that noise/feeling(as soon as I let off for a few seconds it goes away).

I am going to be changing the tranny fluid out on it and putting some lucas tranmission fix in there with it this weekend. I have not received any Check engine lights that would indicate a transmission issue.

Have any ideas on what in the transmission can cause this? OR Any ideas on whether or not the Catalytic converter can cause this?

I am leaning towards an Overdrive issue or chunk of metal sitting in the bottom of the pan that gets sucked into the gears from the pressure increase or the 4th gear clutch might be worn.
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Tuesday, February 14th, 2017 AT 1:20 AM
Tiny
KEN
  • ADMIN
Hey JOSH,

Yes is does sounds like you might have a transmission issue but is could also be a misfire issue as well, have you installed new spark plugs recently?

If not here is a guide to help you.

https://www.2carpros.com/articles/how-to-change-spark-plugs

and

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Please let us know happens so it will help others.

Best, Ken
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Friday, February 17th, 2017 AT 3:21 PM

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