12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

Unknown sensors. Help ID?

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Old Feb 1, 2012 | 03:53 PM
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From: Scottsbluff NE.
Unknown sensors. Help ID?

Trans shop told me i'm having internal failure of the pump, torque converter, clutches, and a speed sensor. I found this that confused me. Maybe yall can help.
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I aint got a clue what this connector goes to. Cant find anything on the trans it would reach.

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This is the sensor I can't figure out. To the left if the Trans fluid pan for referance.
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Same sensor but seeing more behind it for referance.

ANd I have 2 metal tubes that run from nearr under the sensor up to a flex hose that goes to my front axle. You can see the top of the tube in the sensor pictures. Not sure what that is ither. Here is the end on the front axle. Sorry the picture is horriable my cell phone camera aint that great.
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Thanks for all yalls help in advance. I really appriciate the guidance this site has provided so far. Thanks guys and gals.
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Old Feb 1, 2012 | 04:37 PM
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From: Okotoks, Ab. Canada
Originally Posted by that_guy
Trans shop told me i'm having internal failure of the pump, torque converter, clutches, and a speed sensor. I found this that confused me. Maybe yall can help.

I aint got a clue what this connector goes to. Cant find anything on the trans it would reach.


This is the sensor I can't figure out. To the left if the Trans fluid pan for referance.

Same sensor but seeing more behind it for referance.

ANd I have 2 metal tubes that run from nearr under the sensor up to a flex hose that goes to my front axle. You can see the top of the tube in the sensor pictures. Not sure what that is ither. Here is the end on the front axle. Sorry the picture is horriable my cell phone camera aint that great.



Thanks for all yalls help in advance. I really appriciate the guidance this site has provided so far. Thanks guys and gals.
Those tubes look like trans cooler lines. Was your truck swapped from auto to standard at some time? Check and see if they go up by or into the side of the radiator.
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Old Feb 1, 2012 | 07:20 PM
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They go to the front axle.
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Old Feb 1, 2012 | 10:11 PM
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From: Seymour Tn
hard to see what diameter the tubes are. i have two metal vacuum tubes on my 94 that connect transfer case flex lines to front axle flex lines that operate 4x4. they secure to the cross member and the frame on the pass. side of the truck the harness for that sensor has to be tucked up in there somewhere. you have an 47re i got a 47rh so im not so familiar with ur wiring harness and connector locations
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Old Feb 1, 2012 | 10:36 PM
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Yep, that sensor is the Output Shaft Speed sensor that the PCM uses to run the governor. There should be a connector that plugs into it somewhere.

As mentioned, the tubes are vacuum tubes that run from the vacuum switch on top of the transfer case over to the front axle disconnect. You need those to run the 4WD.
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Old Feb 2, 2012 | 09:39 AM
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Well........ Thanks for the heads up on all that. Where do those tubes connect to? I'm guessing the T-case?
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Old Feb 2, 2012 | 10:32 AM
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From: Seymour Tn
Yes there is a vacuum switch on top of the t case
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Old Feb 2, 2012 | 12:30 PM
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Thanks. Any body have a solid idea of what connector is in the first picture? I'm at a loss to be honest. I'm about to go out and look for the Vac switch ontop of the t-case and look for a connector to go to that speed sensor. That is one of the things that the Trans shop said was going out. They also said that I'm slipping and the troque converter is not wanting to release and tried to kill the engine when stopped. It does drag down pretty bad when it's cold but once it warms up it's fine. I did put a bottle of Lucas's stop slip and the shifting and holding is a ton better. It's just a bandaid for now I know.
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