Reseting Speedometer on 2000 GT

doubleomustang

New Member

Dec 7, 2006

73

0

0

Spartanburg SC

Jan 23, 2007

#1

• Jan 23, 2007

• #1

i just had a 3.73 gear installed in my 00 GT. it threw my speedometer off by about 10 mph. the garage that did it said there was no speedo gear to replace. they said that it was electronic and that i needed to find the codes online to reset the speedo....like turning the ignition on and off several times in some sort of order.
Can anyone help with these codes?

 

Duke309

Member

Oct 15, 2005

90

0

6

Orlando, FL

Jan 23, 2007

#2

• Jan 23, 2007

• #2

you need either a speedcal (doesnt work on an auto), or a tuner such as the sct xcal 2 or diablo predator.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Jan 23, 2007

#3

• Jan 23, 2007

• #3

sorry, no such thing as codes to reset it.

you will have to either have it tuned or buy a hand held tuner to adjust the speedometer.

till then you can unplug the speed sensor if you have a manual trans to keep the miles from racking up

 

doubleomustang

New Member

Dec 7, 2006

73

0

0

Spartanburg SC

Jan 23, 2007

#4

• Jan 23, 2007

• #4

i dont think that the odometer is registering more than what is being put on it. is it true then that this year does not have a speedo gear in it.

 

Duke309

Member

Oct 15, 2005

90

0

6

Orlando, FL

Jan 23, 2007

#5

• Jan 23, 2007

• #5

the odometer is not putting the correct number of miles though, yeah its true that you cant just change a speedo gear on your 2000

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Jan 23, 2007

#6

• Jan 23, 2007

• #6

his odometer is going by what the speed sensor is saying that the car SHOULD be doing with 3.27 gears. now that the gears have changer his speedo is fast which makes the miles rack up faster.

 

Matt's 03 GT

Member

Aug 28, 2006

0

0

17

Orange County

Jan 23, 2007

#7

• Jan 23, 2007

• #7

The 99+ mustangs have an electronic speedometer. You will need an x-cal or similar to make the adjustments.

 

doubleomustang

New Member

Dec 7, 2006

73

0

0

Spartanburg SC

Jan 24, 2007

#8

• Jan 24, 2007

• #8

yeah i found out there isnt a gear to change its all electronic....the odometer is reading right ....

 

Matt's 03 GT

Member

Aug 28, 2006

0

0

17

Orange County

Jan 24, 2007

#9

• Jan 24, 2007

• #9

If you haven't changed the computer to recognize the new rear gears then you spedo and your mileage will be reading incorrectly.

 

doubleomustang

New Member

Dec 7, 2006

73

0

0

Spartanburg SC

Jan 30, 2007

#10

• Jan 30, 2007

• #10

i have run the car against other cars and tho the speedo is off the odometer still reads correctly. just got a ticket...gota get that thing fixed

 

LaserRed01GT

Banned

Oct 3, 2006

739

3

0

Clearwater, FL

Jan 30, 2007

#11

• Jan 30, 2007

• #11

doubleomustang said:

i have run the car against other cars and tho the speedo is off the odometer still reads correctly. just got a ticket...gota get that thing fixed

Click to expand...

It's physically impossible for both your speedo and odometer to register correctly without changing the rear axle ratio within your PCM.

Assuming you kept the same size rear tires and going from a 3.27:1 gear to a 3.73:1 gear, you are accumulating mileage at roughly a 14% increased rate. Your speedo is also increased by roughly the same. So if your speedo shows 70 MPH, you are actually only doing about 60 MPH.

 

joshheat25

Member

Nov 8, 2004

871

0

16

Delaware

Jan 30, 2007

#12

• Jan 30, 2007

• #12

Yea just spend the money and buy the Excalibrator 2