Crazy trans temperatures - Ford Powerstroke Diesel Forum

 
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post #1 of 7 Old 10-20-2013, 07:13 AM Thread Starter
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Crazy trans temperatures

Hey everybody I'm looking for some advice here...I was driving the other day and my trans was at 130 for the entire drive on the highway at 75 and the next time I check my trans gauge I was off the highway and driving through town and the temperature registered at a steady 180 which is pretty high for no towing and the ambient temperature only being in the 50's....Next I drive it to the store last night and the gauge is sitting on 100 because the trans is warming up. I drive no more than 3 miles and the pointer on the gauge jumps to 140 then back to 100 and then jumps around 140-110 with fluttering movements. After 10 minutes in the store I drive home and when I turn my truck on the temp registers 140 steady after only driving 4 miles to the store and letting it sit. When I begin to drive in the next 1/2 mile the temp steadily rises to 150 and from there jumps to 180 then to 210...then back down to 160 then all the way to 250. It kept jumping around and even when sitting still the gauge would flutter 30-50 degrees. I noticed no difference in shifts or anything so I'm wondering if its the ISSPRO gauge or my trans is on its way out. Any help would be great thanks everyone!! All of the jumping around happened while driving conservatively at 30-35 and not accelerating hard at all.

2002 Ford F-350 7.3L
Regular cab
8 ft. bed 4x4
Isspro EV gauges (pyro, trans temp, boost)
6637 Intake with Donaldson B085011
Ts 6 position performance chip
4" downpipe to a side pipe with 5" tip
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post #2 of 7 Old 10-20-2013, 07:46 AM
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I'm guessing you have a temperature probe in the side of your tranny. Mine fell apart on me one time and decided not to use those anymore. I invested in an edge insight cts to use as my gauges. Only analog gauge I have now is for boost, and that's because I have a boost fooler installed

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post #3 of 7 Old 10-20-2013, 07:48 AM
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Sounds like you have a short somewhere. Mine has done the same thing for years. I have tried finding where my issue may be but can not find anything, though i am not very good when it comes to wiring. It doesn't bother me anymore, as i know it's impossible for the temps to jump around like that. It's either wiring or the sensor itself. I tow nothing with mine and the needle jumping around doesn't happen often to me.
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post #4 of 7 Old 10-20-2013, 07:48 AM Thread Starter
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Yes I have the temperature probe in the side port in the transmission. I have loved it so far and this has never happened before...should I just replace the probe? Or the whole gauge?

2002 Ford F-350 7.3L
Regular cab
8 ft. bed 4x4
Isspro EV gauges (pyro, trans temp, boost)
6637 Intake with Donaldson B085011
Ts 6 position performance chip
4" downpipe to a side pipe with 5" tip
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post #5 of 7 Old 10-20-2013, 07:52 AM Thread Starter
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yeah I am not very good with wiring at all but I may look into the connections

2002 Ford F-350 7.3L
Regular cab
8 ft. bed 4x4
Isspro EV gauges (pyro, trans temp, boost)
6637 Intake with Donaldson B085011
Ts 6 position performance chip
4" downpipe to a side pipe with 5" tip
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post #6 of 7 Old 10-20-2013, 08:38 AM
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My bet is on wiring or a bad probe. Unless it's a Glowshift. Then it's probably the gauge.

05 F350 Crewcab
98 Jeep TJ - wheeler
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post #7 of 7 Old 10-20-2013, 09:05 AM Thread Starter
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Okay thank you guys!

2002 Ford F-350 7.3L
Regular cab
8 ft. bed 4x4
Isspro EV gauges (pyro, trans temp, boost)
6637 Intake with Donaldson B085011
Ts 6 position performance chip
4" downpipe to a side pipe with 5" tip
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