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Does anybody know if the transmission gage that is in the instument panel that comes from the factory, can it be converted from an "idiot gage" to a real gage? Now it stays locked in the middle of the temp range, it never moves. Can it at least be converted to that it at least moves?
I've seen oil pressure gages that instead of a sending unit, they just have a switch and a fixed resistor so the gage stays "locked" in the middle of the range and never moves unless the oil pressure basically goes to zero.
If the tranny gage can't be converted to a moving gage, is there an extra hole in the tranny to mount an aftermarket sending unit for a new gage that actually displays in degrees F? Or can a aftermarket gage be "piggy backed" off the existing sender? I'm sure the current sending unit is used by the vehicle computer, so it probably can't just be removed and another one added. Or can it?
The existing sender on the transmission (MY 2002 and up) acutally reads temperature (i.e 120 degrees, 200 degrees and so on). The gage on the dashboard just looks for a certain amount of heat (not very much) and rises accordingly. So now might be a good time to get some aftermarket gauges in.
Do you know if I can just Piggy back off that stock sending unit with the aftermarket gage? Or will I have to add an additional sending unit for the aftermarket gage?
You'll need to add a sender. There is a port on the driver's side of the trans, above the pan, towards the front. There is a black hex head plug in it. That's a good place to install a sender for a gauge.
Does anybody know if the transmission gage that is in the instument panel that comes from the factory, can it be converted from an "idiot gage" to a real gage? Now it stays locked in the middle of the temp range, it never moves. Can it at least be converted to that it at least moves?
The gauge works off of the ECM, not off of the sender unit. So the gauge says what the computer tells it to say. There is no direct connection between the sender and the gauge.
Originally Posted by 7.3L-Excur
I've seen oil pressure gages that instead of a sending unit, they just have a switch and a fixed resistor so the gage stays "locked" in the middle of the range and never moves unless the oil pressure basically goes to zero.
You've not only seen one, you have one. The factory oil pressure gauge reads "Normal" at anything above 6 psi.
[QUOTE=jschira]The gauge works off of the ECM, not off of the sender unit. So the gauge says what the computer tells it to say. There is no direct connection between the sender and the gauge.[QUOTE]
That's what it was!
I'm not sure where read it, but I think that's something to the effect of what they said. They said something about the ECM and whatever else, I'll have to dig up the article and post the link.
Thanks for spending the time to find this web site on tranny gages.
I worked for Ford for 17 years and participated in what was called customer inspection studies. Basically they would bring in owners of a particular vehicle and ask what the customer liked and didn't like. Then Ford would get a score for various categories like "gages". Based on those scores Ford would make changes to those vehicles.
One of the things the "average" customer liked, was gages, not "idiot lights". However the "average" customer didn't like the fact that the gages moved. The customer perceived that gage movement as poor quality. So they turned functional gages into "idiot gages". Once Ford turned the gages into idiot gages, their score for gages improved.
Thanks for spending the time to find this web site on tranny gages.
I worked for Ford for 17 years and participated in what was called customer inspection studies. Basically they would bring in owners of a particular vehicle and ask what the customer liked and didn't like. Then Ford would get a score for various categories like "gages". Based on those scores Ford would make changes to those vehicles.
One of the things the "average" customer liked, was gages, not "idiot lights". However the "average" customer didn't like the fact that the gages moved. The customer perceived that gage movement as poor quality. So they turned functional gages into "idiot gages". Once Ford turned the gages into idiot gages, their score for gages improved.
Sad but true.....
AutoJim told a similar story from his DCX years. People would see the temp gauge moving up and down. They figured that something must be wrong, so they took their car into the dealer. The dealers figured that it must be the t-stat so they changed them out. DCX paid for 1000s of new t-stats on warranty.
DCX then "dumbed" down the temp gauge. Made it an idiot light. Warranty claims went to zilch overnight. And yet, no one blew their engine.