speedo gear stripped again! this one only lasted a week!

mootang

New Member

Dec 5, 2004

907

0

0

texas

Aug 21, 2006

#1

• Aug 21, 2006

• #1

what would cause my speedo gears on the speed sensor to keep stripping out? I had gears put in about 20k miles ago and they put a red one in and it got chewed up. I replaced it with the white 23 tooth one which was dead on for the 3.73's but it got chewed up after a week!

what would cause this? also don't know if this helps but befor they stop working completely they will still work under high loads like 5th gear at 2k rpm/full throttle.


scott

 

Black95GTS

Active Member

Jan 8, 2004

1,644

3

38

Marlborough, MA

Aug 21, 2006

#2

• Aug 21, 2006

• #2

The white 23 tooth gear is not a ford gear. Its actually a Chrysler gear. It does not mesh properly and will wear down. Some peeps have better luck then others when it comes to this.

The only way to do it without reverting to a chrysler piece, IMO, is to get a speed cal. I did it; it works flawlessly with my 4.10s.

http://www.brothersperformance.com/catalog/product_info.php/products_id/1327

Adam

 

gustang818

New Member

Mar 10, 2006

48

0

0

Aug 21, 2006

#3

• Aug 21, 2006

• #3

Adam is right. The white gear is not a Ford part and doesn't fit right. I got my red gear from Ford and haven't had any trouble with it other than some speedo inaccuracy. The speedo gears probably still work when you're going fast because they will turn at speed and skip over the part without teeth to a part with teeth.

White gear:

 

Attachments

• IMG_5794.webp

  48.2 KB · Views: 183

R

rockin_rick

Member

Oct 9, 2003

968

1

17

Aug 21, 2006

#4

• Aug 21, 2006

• #4

I went through a few 23's... If they go bad, they can also cause your cruise control to stop working... Also, a 23 tooth gear on 94-95's (with their 8 tooth trans gear) are not dead on, it's still off some. To properly fix this, you need to replace the gear in the transmission. Replace it with a 6 or 7. This isn't easy though... I went with the 6 and 18 for dead on 3.73 readings.

Rick

 

mo_dingo

20+ Year Stangneter

Aug 26, 2003

3,031

2

58

Tucson, AZ

Aug 21, 2006

#5

• Aug 21, 2006

• #5

Yeah, my speedo is off by 5% of whatever speed I am traveling with the white 23.
Scott

 

S/CBlack95GT

New Member

Apr 6, 2003

2,018

0

0

Tampa Palms, FL

Aug 21, 2006

#6

• Aug 21, 2006

• #6

Yeah, you need the swap the drive gear inside the tranny.

 

mootang

New Member

Dec 5, 2004

907

0

0

texas

Aug 22, 2006

#7

• Aug 22, 2006

• #7

Ok, thanks for the info. but why would the red one get chewed up after 20K miles? anyways it looks like I'll be without a speedo since I'm so used to driving without it anyways.