Automatic Transmission/Driveline "clunk"

S

SIMV

New Member

Nov 17, 2005

4

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0

Nov 17, 2005

#1

• Nov 17, 2005

• #1

This is a post that I made over at MustangForum.com and got not much of a response. I was kinda hoping that you guys here would have a little more info. Thanks for looking.

Me on another site said:

Alright guys, I went all the way back to page 12 and didn't find anything about this, so if it's been covered before I apologise.

I just bought a 2002 Automatic Gt with a shaker hood, ram air, 75mm throttle body, UDP's,superchip. 3.73 gears, X-pipe, and Magnaflow exhaust. I know I'm forgetting some stuff, but the upgrades are irrelivent... I just wanted to give you guys some background on the car.

Recently I noticed that when driving in overdrive and coasting at low speeds (usually 35 and below) it seems like the transmission doesn't know what gear it want's to be in and jerks a little bit. Sometimes it's so bad that it feels like the tail end of the tranny and the driveshaft is bouncing off the bottom of the car. What is the problem? Is this a common thing with GT's? Or should I book the first appointment to my local mechanic?

Click to expand...

 

mikes2008gt

Founding Member

Sep 29, 2002

706

0

17

Arlington, Texas

Nov 17, 2005

#2

• Nov 17, 2005

• #2

I've never heard of that specific problem, but it sounds like the u-joints are worn out.

Welcome to :SNSign: btw.

 

streetstang03

unModerator

Dec 27, 2003

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1

0

the dark side of the moon/home of the 1999, 2003,

Nov 17, 2005

#3

• Nov 17, 2005

• #3

clutch packs possibly...how many miles on the car?

 

bham_gt

New Member

Sep 21, 2004

94

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Birmingham, AL

Nov 17, 2005

#4

• Nov 17, 2005

• #4

I've got a 2003 automatic that seemed to act very similar to the way you describe yours. It eventually got so bad that it shuddered really bad when shifting into and out of overdrive. I took it to the dealer and they changed the transmission fluid and that cleared the shuddering right up. Sometimes it still "jerks" a little bit when going low speeds in overdrive, but not nearly as bad. You might want to get your fluid and filter changed though if you haven't had it done.

 

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sneakygt

New Member

Oct 30, 2005

1

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Pace, FL

Nov 17, 2005

#5

• Nov 17, 2005

• #5

I have an 01GT auto. 32k miles. Same situation and like bham gt did, I changed the fluid and filter and it pretty much cleared it up. It still chugs a little bit right at 33 mph.

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

95

134

Nov 17, 2005

#6

• Nov 17, 2005

• #6

With auto tranny always start with that which is cheapest and easiest, change the fluid and filter.

 

P

PEWTERPONY

Founding Member

May 22, 2002

829

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NE Atlanta

Nov 17, 2005

#7

• Nov 17, 2005

• #7

They clunk if you don't get the fluids changed every 30k.

 

S

SIMV

New Member

Nov 17, 2005

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Nov 18, 2005

#8

• Nov 18, 2005

• #8

Interesting... I just turned over 30k too. Good idea on starting with the cheapest. I was real close to buying new motor and trans mounts.

 

Dark Knight GT

I can't get it up......ok that didn't sound right.

May 26, 2003

3,653

2

56

Ozark, Missouri

Nov 18, 2005

#9

• Nov 18, 2005

• #9

Sounds like a torque converter shudder to me. How many miles, and what kind of condition is the transmission fluid in ? Have you had a flashing o/d light to appear on the dash ?

 

S

SIMV

New Member

Nov 17, 2005

4

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0

Nov 18, 2005

#10

• Nov 18, 2005

• #10

I just turned 30k, and I just bought the car about a month or two ago, so I don't know about the trans fluid.

 

Dark Knight GT

I can't get it up......ok that didn't sound right.

May 26, 2003

3,653

2

56

Ozark, Missouri

Nov 18, 2005

#11

• Nov 18, 2005

• #11

Chances are, the fluid hasn't been changed in it. I would say give the transmission a flush with fluid and filter change.

 

T

TGJ

New Member

Mar 30, 2005

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Nov 18, 2005

#12

• Nov 18, 2005

• #12

First thing, change/flush tranny fluid with mercon V.

 

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PEWTERPONY

Founding Member

May 22, 2002

829

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NE Atlanta

Nov 18, 2005

#13

• Nov 18, 2005

• #13

SIMV...30K You got time to change it. I hear that if you let it go way to high milage, the tranny will act weird after you have taken the fluid out and put new in.

I get mine changed every 30k