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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

Fox Speedo Sitting at 12MPH

  • Thread starter Thread starter Jamesmcga
  • Start date Start date Mar 2, 2022
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General karthief

wonder how much it would cost to ship you a pair
Mod Dude
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#21
  • Mar 3, 2022
  • #21
All he likely needs is the stop pin. That's considering the speedometer works fine and he wants to keep the white faces. The speed discrepancy is probably the 4.10 gear because the transmission end of the speedometer cable was never changed.
Just say'n
 

7991LXnSHO

wanna catch the space herp
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#22
  • Mar 3, 2022
  • #22
General Karthief TypEd:
All he likely needs is the stop pin. That's considering the speedometer works fine and he wants to keep the white faces. The speed discrepancy is probably the 4.10 gear because the transmission end of the speedometer cable was never changed.
General karthief said:
Just say'n
Click to expand...
It seems we are not understanding the problem description the same way. See post seven. “swinging all over the place” sounds suspicious. I figured the needle was put on wrong if it was there when not moving.
@Jamesmcga can you clarify if the speedometer -
1. Reads fast when the car is stopped?
2. Does the needle bounce, tremor or act spastic when the car is moving?
3. Does the needle read at a rate relative to the speed of the car?
4. And is it off the same amount as when it is stopped?
 

Cheapskate207

The left one hangs a little lower
5 Year Member
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#23
  • Mar 3, 2022
  • #23
How would the Speedo move while idling? The drive gear is on the tail shaft
 

Mustang5L5

That is…until I whipped out my Bissell
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#24
  • Mar 3, 2022
  • #24
I think he meant the tach.

If the speedo cable is binding up in the shaft, it could randomly unwind to relieve the tension and give the appearance of moving while stopped. I sense there's a whole lot of issues that need solving here.
 

7991LXnSHO

wanna catch the space herp
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#25
  • Mar 3, 2022
  • #25
Mustang5L5 said:
I think he meant the tach.

If the speedo cable is binding up in the shaft, it could randomly unwind to relieve the tension and give the appearance of moving while stopped. I sense there's a whole lot of issues that need solving here.
Click to expand...
A whole lot of clarification will help us.
 
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J

Jamesmcga

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#26
  • Mar 5, 2022
  • #26
7991LXnSHO said:
A whole lot of clarification will help us.
Click to expand...
at idel the speedometer will sweep occasionally… and then when it settles down it is 10 to 20 mph off.

As of right now with the car off the needle is sitting at 12 miles an hour.
 

7991LXnSHO

wanna catch the space herp
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#27
  • Mar 5, 2022
  • #27
Jamesmcga said:
at idel the speedometer will sweep occasionally… and then when it settles down it is 10 to 20 mph off.

As of right now with the car off the needle is sitting at 12 miles an hour.
Click to expand...
Thanks. The stock mechanical speedometer has no way to move unless it has a input from the cable. 5L5’s binding is the best explanation for that, unusual as that is. Be sure to lube inside the new cable before installing.
What transmission is in the car?
 

General karthief

wonder how much it would cost to ship you a pair
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#28
  • Mar 5, 2022
  • #28
Jamesmcga said:
at idel the speedometer will sweep occasionally… and then when it settles down it is 10 to 20 mph off.

As of right now with the car off the needle is sitting at 12 miles an hour.
Click to expand...

We see that and let me give a possible explanation, the needle is mounted to a (for lack of better words) barrel with a magnet/ spring setup, as the car moves the cable turns the barrel spinning the magnet and moving the needle, the vibration at start up may be causing the magnet part to pull the needle up because there is no tension on the spring, that may be the reason for the tic (mark on speedometer face) to be below the 0 mph mark, the stop is there to 'load' the spring holding the needle down on the stop, there needs to be tension on the spring to keep the magnet from pulling on the needle until the cable starts turning the barrel.
Before replacing the cluster I would try pulling the needle off, placing it a little below the 0 on the face then moving the needle up and placing the stop in its hole and letting the need rest on the stop thus loading the spring. You can find the hole for the stop by shining a light behind the gauge and poking a hole in the white face gauge covering.
I am not a mechanic by trade, I am just broke enough that I have to try to figure out how to fix stuff, most times I can fck something up and it still works just fine.
 
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Jamesmcga

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#29
  • Mar 10, 2022
  • #29
General karthief said:
We see that and let me give a possible explanation, the needle is mounted to a (for lack of better words) barrel with a magnet/ spring setup, as the car moves the cable turns the barrel spinning the magnet and moving the needle, the vibration at start up may be causing the magnet part to pull the needle up because there is no tension on the spring, that may be the reason for the tic (mark on speedometer face) to be below the 0 mph mark, the stop is there to 'load' the spring holding the needle down on the stop, there needs to be tension on the spring to keep the magnet from pulling on the needle until the cable starts turning the barrel.
Before replacing the cluster I would try pulling the needle off, placing it a little below the 0 on the face then moving the needle up and placing the stop in its hole and letting the need rest on the stop thus loading the spring. You can find the hole for the stop by shining a light behind the gauge and poking a hole in the white face gauge covering.
I am not a mechanic by trade, I am just broke enough that I have to try to figure out how to fix stuff, most times I can fck something up and it still works just fine.
Click to expand...
How to replace the dash anyways cause old one was not quite to restoration quality so if you’re still fix the problem for now.
 

General karthief

wonder how much it would cost to ship you a pair
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#30
  • Mar 10, 2022
  • #30
Jamesmcga said:
How to replace the dash anyways cause old one was not quite to restoration quality so if you’re still fix the problem for now.
Click to expand...
I'm still what??
I think I don't understand.
 
J

Jamesmcga

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#31
  • Mar 10, 2022
  • #31
General karthief said:
I'm still what??
I think I don't understand.
Click to expand...
Sorry I was trying to use this voice text going down the road.

I ended up replacing the whole instrument cluster. There is no one was not quite up to restoration standards.
 

7991LXnSHO

wanna catch the space herp
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#32
  • Mar 10, 2022
  • #32
Jamesmcga said:
Sorry I was trying to use this voice text going down the road.

I ended up replacing the whole instrument cluster. There is no one was not quite up to restoration standards.
Click to expand...
I’m glad you are not having a stroke.
Did the replacement fix all the weirdness?
 
J

Jamesmcga

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#33
  • Mar 10, 2022
  • #33
I have the rear end out doing a 5 lug conversion…hope to know more tomorrow.
 
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General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
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polk county florida
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#34
  • Mar 10, 2022
  • #34
Keep us posted.
 

nickyb

I gotta say i never painted my nuts, Never Ever
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#35
  • Mar 10, 2022
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I'll pay you tomorrow for a hamburger today.
 

90LXFOX

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#36
  • Mar 11, 2022
  • #36
Jamesmcga said:
Sorry I was trying to use this voice text going down the road.

I ended up replacing the whole instrument cluster. There is no one was not quite up to restoration standards.
Click to expand...
Where did you find an instrument cluster ?
 
J

Jamesmcga

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#37
  • Mar 11, 2022
  • #37
eBay…wasn’t cheap but it was mint
 
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