RPM's go up and the car will slowly accelerate and will make a noise sounding like metal scraping

ZSANTI14

MEMBER
2008 PONTIAC G6
3.5L
V6
2WD
AUTOMATIC
141,000 MILES

Usually when I press the gas going straight, RPM's will go up to 5000 RPM's, however under 10 mph. When I turn left or right, the car doesn't seem to accelerate at all not even slowly hardly. The car will make a noise where it sounds like something is scraping is against something.

5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

Can you upload a video of the noise for me to hear?

https://www.2carpros.com/articles/automatic-transmission-problems

As far as the slipping, did you verify the fluid level?

How long since the fluid and filter was changed? A clogged filter will cause this issue as well.

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

Roy

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Wednesday, October 23rd, 2019 AT 4:53 AM

ZSANTI14

MEMBER
3 POSTS

Yes of course. The first video is an example of the rpm's going up while I press the gas pedal kind of slowly. The second will be the noise I was talking about. It’s kinda faint I have to listen close to hear it. Sorry there were other cars in the area.

Videos (Click to make bigger)

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Wednesday, October 23rd, 2019 AT 9:07 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Thank you.

It sounds like it is starving for fluid from a clogged filter in the transmission.

I would start by changing the fluid and filter and see if there is any debris in the bottom of the pan.

Roy

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+1

Wednesday, October 23rd, 2019 AT 11:19 AM

ZSANTI14

MEMBER
3 POSTS

I would also like to add that I have had a drop in fuel economy. I’ve only driven 42 miles and I had lost a quarter of a tank. My mpg on the highway is supposed to be 28-29 mph.

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Wednesday, October 23rd, 2019 AT 11:21 AM

ASEMASTER6371