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Leak in speed sensor (1993 Chevrolet G20)
#745933 March 05th 2019 8:20 am
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I discovered today I have a mild leak in the speed sensor. See enclosed photo.

I'm in the middle of nowhere and the mechanic in this remote village tells me he needs to take it apart to fix the leak
or replace it. I'm not sure he knows what he's doing so I told him to let it be for the time being. If any of you guys know
if it will be necessary to replace it in order to fix the leak, or where I can order it, I'd appreciate it.

I think it's not the sensor but the part the sensor is attached to that is leaking. What is the name of it?




Attached Files 20190305_120729 (1).jpg20190305_120729 (1).jpg
Last edited by Torgunfu; March 07th 2019 6:22 am.
Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745944 March 05th 2019 4:58 pm
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I dont know what that is but you will still have brakes without the speed censors ..... wait till you get back N go to your mech to fix it.... Did the Brake light come on ? Or the ABS light ....


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745950 March 05th 2019 11:43 pm
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I have a 1993 G20 and i've never heard of a "mild leak in the speed sensor". this is a new term for me. Any more info regarding this leak?

Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745951 March 06th 2019 1:30 am
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Speed censors are on the hub N it counts the rotation of the hub. Its all electronic how can it leak.

Unless some thing leaked into it N shorted it out.


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Leak in speed sensor (1993 Chevrolet G20)
frscke1 #745952 March 06th 2019 2:26 am
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BBC Blue
1990 Chevy G30 L19 7.4 EXT
Church Van, maternity division

DogVan
1988 Dodge B250
LA series 318 Wedge 5.2 TBI A500

Cabin Cruiser
'94 Dodge B350 www.xplorermotorhome.com/
Xplorer MH model 230
230 hp LA series 360 Wedge MPI 5.9 A518 OD auto

Old vans are getting pricey!
Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745953 March 06th 2019 3:03 am
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thats a new one on me ... but its still electrical whats to leak ?


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745970 March 06th 2019 12:08 pm
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Dude, New one on me, too. See the O-ring? Look up 4L60 images. It looks like the Reluctor gear is in the case, and the sensor probe resides in the center once installed.

Looks like there are external wheel speed sensors in the newer GM vehicles...

As far as what the Mechanic sez, IDK, but it looks like to R&R the sensor alone wouldn't be going in deep.

Disclaimer:
A used Tilesetter's probably notchyer best source for Mechanicing information... cheers

Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745985 March 06th 2019 6:12 pm
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Oh thats why it is on a 4L60 .... I have 4L80E on both of my vans


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Leak in speed sensor (1993 Chevrolet G20)
Torgunfu #745986 March 06th 2019 7:31 pm
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Ok. Just figured it out. My G20 had the O-ring replaced about 5 years ago because it was leaking trans fluid. It was cheap to fix. took care of the leak and hasn't been a problem since.

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