Continuance of the speedometer saga

[1970Custom]

So, I redid the wiring for the plug, nice, tight, and shrink tubed to seal the connections. Didn't solve the issue. Plugged in a scan tool, and live feed shows 0 when speedo is dead but registers speed when speedometer is working. Thought faulty sensor so I exchanged it, didn't solve my issues. I've come to the conclusion that my problem is internal and mechanical since the scan tool isn't receiving signal from the computer.

The plastic gear on the sensor looks to be in good shape with no visible damage. This leads me to the gear inside the t-case. Has that been a recorded issue in the past? Can it be replaced? Am I better off swaping the t-case?

 

[blacksnapon]

PINPOINT TEST H: SPEEDOMETER/ODOMETER INOPERATIVE, RANGER AND EXPLORER

H1 CHECK CONNECTIONS
Verify connector is properly attached at speed sensor.
Are connections good and is drive tip seated properly?
Yes No
GO to H2 . SERVICE or REPLACE as necessary, RETEST system.

H2 CHECK ODOMETER/POINTER
Check operation of odometer/pointer.
Does the odometer operate and the speedometer pointer not operate?
Yes No
GO to H3 . REPLACE speedometer as described in Removal and Installation in this section. RECHECK speedometer for operation.

H3 CHECK SPEEDOMETER POINTER
Check operation of speedometer pointer.
Does the speedometer/pointer operate?
Yes No
GO to H4 . REPLACE speedometer as described in Removal and Installation in this section. RECHECK speedometer for operation.

H4 CHECK VEHICLE SPEED SENSOR
Disconnect speedometer connector from vehicle speed sensor and remove vehicle speed sensor and check that shaft in vehicle speed sensor turns freely.
Does shaft turn freely?
Yes No
GO to H5 . REPLACE vehicle speed sensor as described in Removal and Installation in this section. CHECK speedometer for operation.

H5 CHECK GEARS
Check drive gear for damage or wear.
Is drive gear damaged?
Yes No
REPLACE damaged or worn gear. CHECK speedometer for operation. System OK.

 

[1970Custom]

Done all those, except speedometer swap. Like I said though I'm not getting any feed from the sensor.

 

[1970Custom]

Is the VSS gear inside the tailshaft supposed to turn freely?

 

[blacksnapon]

Is the VSS gear inside the tailshaft supposed to turn freely?

Nope!!!!!!!!

 

[1970Custom]

Think I found my problem then.

Is it a dealer only part?

 

[1970Custom]

Got my parts ordered, $30 for the two gears and the keeper.

 

[1970Custom]

Fixt.

Replaced both gears, one in the t-case was pretty simple.

 

[DNFXDLI]

Cool...you should make a post in tech tips about this.

 

[1970Custom]

I thought about it afterwords, should have taken pitchurs and made a writeup