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opus
Senior Member
66 Posts |
 Posted - 09/29/2010 : 7:55:08 PM
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I have a 95' BB A/A with an 8.3. The transmission temp gauge is messed up....grounding out or something. Where is it hooked up at the transmission end. Not sure how to go about tracing the issue but I would like the gauge to work.
Ideas/suggestions? |
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tigger2
Advanced Member
USA
470 Posts |
Posted - 09/30/2010 : 05:17:55 AM
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| More info please. What transmission do you have? Have you checked in the trans cooler line? Is the trans temp going way up but not the engine temp? Have you washed out the radiator cooler assemblies ( radiator, transmission,power steering, and air to air) yet? |
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opus
Senior Member
66 Posts |
Posted - 09/30/2010 : 07:24:31 AM
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| Sorry, its a 643R. Trans temp doesnt move. Once in a while you hit a bump and it pegs out. Clearly a short or bad gauge, etc. All the coolers are very clean. I did not check in the cooler line. There is however in what I assume to be the drain plug in the trans pan, a hole. Nearby the hole I found a wired with a sort of plug on it that fit in the hole. Thinking that might be how it worked. I will have to get a picture of it. I played with the wire and stuck it in the drain plug to see if the gauge moved and it didnt. The wire is rough looking to boot. |
Edited by - opus on 09/30/2010 12:49:52 PM |
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opus
Senior Member
66 Posts |
Posted - 09/30/2010 : 1:41:40 PM
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tigger2
Advanced Member
USA
470 Posts |
Posted - 10/01/2010 : 11:52:20 AM
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| This looks like it could be a temp sender. I think there are parts missing there should be a threaded post sticking out of the hole you poked the wire into to screw an eyelet onto. You will need to match the sender to your gauge. |
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opus
Senior Member
66 Posts |
Posted - 10/01/2010 : 4:31:11 PM
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The end looks like a sleeve crimped on the wire. Can someone tell me how to remedy this without having to string 40' of new wire?
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IBTMech
Top Member
USA
973 Posts |
Posted - 10/02/2010 : 3:59:09 PM
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| There's no connector on top of the transmission? |
If it doesn't fit, FORCE it.
If it breaks, well, it needed replacing anyway.
Pullin' wrenches for 45 years. |
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opus
Senior Member
66 Posts |
Posted - 10/02/2010 : 5:34:30 PM
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Not sure, I didnt look. From all I know, I thought this would be it. If its not, what is it?
There are a few connectors on top, from what I can see.
This is on the drivers side of the transmission:
I would have thought that the temp sending unit would be the same place on every 643R. |
Edited by - opus on 10/02/2010 6:00:47 PM |
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jperkins
Active Member
USA
41 Posts |
Posted - 10/03/2010 : 07:06:50 AM
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| That appears to be the retarder control valve and the sender is the retarder out temp sensor |
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opus
Senior Member
66 Posts |
Posted - 10/03/2010 : 07:32:56 AM
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| Is that the temp sending unit for my gauge or is there another one? |
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opus
Senior Member
66 Posts |
Posted - 10/03/2010 : 3:01:29 PM
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Furthermore:
There are 4 wires on the back of the temp gauge. 1 is ground, 1 is dash lights. The other 2 are hot with 12v. When I go to the wire shown here, the bare wire is also 12v, the crimped piece is 0v. When I jam the piece in the hole, it then pegs the gauge to all the way to the right, off the scale. I assume that means it is grounding out? Should there be 12v to that wire if it in fact does go in that hole? That wire goes over the top of the transmission to the other side of the bus and into the loom heading toward the front of the bus.
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Edited by - opus on 10/03/2010 3:46:55 PM |
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94AmTranVolunteer
Advanced Member
264 Posts |
Posted - 10/03/2010 : 7:38:25 PM
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| Are these Pictures of the Frame or Something Else. |
Answering Electrical Problems One at a Time. |
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opus
Senior Member
66 Posts |
Posted - 10/03/2010 : 7:56:34 PM
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| They would be of the transmission and the pan. |
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tigger2
Advanced Member
USA
470 Posts |
Posted - 10/04/2010 : 06:04:23 AM
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| Cut the wire off above the bad spot (where you got the 12v) and add a short piece put an eyelet for #10 screw and ground it the gauge should bury on the hot side. Get a sender unit that will fit in the hole (possibly from Allison)and put the eyelet on the threaded post that is the sender signal. |
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opus
Senior Member
66 Posts |
Posted - 10/04/2010 : 06:58:19 AM
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| Got it. So I need to find a sending unit to thread into about a 1/4" hole. Ahhh...I get it, the plug is the sending unit. Something must have broke off the end of it. |
Edited by - opus on 10/04/2010 12:21:08 PM |
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Greetings and a question
