Transmission Issues - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 11 (permalink) Old 02-23-2010, 12:14 AM Thread Starter
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Unhappy Transmission Issues

Tonight on the way home from work as i pulled on to the interstate my Transmission temp gauge maxed out and my tow/haul light started to blink. The handling did not change at all and there was nothing out of the ordinary. I pulled over and checked the fluid level and looked for any leaks under the truck but fluid was full and no sign of any leaks. As I was checking the fluid level the gauges went back to normal. So I got back on the interstate and it was fine for about 5 miles and the gauge and light went back to maxed out and blinking.

Any suggestions?????
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post #2 of 11 (permalink) Old 02-23-2010, 12:32 AM
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Re: Transmission Issues

What gauges?

My isspro did the same thing..would just max out all of a sudden and jump all over the place. Traced it back to a bad connection at the distrib box or whatever it is.

As for the blinking tow/haul light..??

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post #3 of 11 (permalink) Old 02-23-2010, 01:49 AM
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Re: Transmission Issues

It sounds like you need to get it to a shop and check the codes. The torque converter may not be locking. Torque converters are what create heat in the transmission, when they are locked the transmission temp stabilizes. If the converter doesn't lock the transmission cooler system cannot do its job. That would be the first place that I would look.

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post #4 of 11 (permalink) Old 02-23-2010, 10:57 PM
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Re: Transmission Issues

cooler may be plugged up for stuff coming apart inside thats what mine did when it went ouy back flush the cooler in to a Jar and see all the junk in it.

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post #5 of 11 (permalink) Old 02-23-2010, 11:52 PM
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Re: Transmission Issues

Are you referring to the stock gauge? If so, most likely your TFT sensor and/or the wiring harness to it has failed. It's not uncommon, and it isn't difficult to change. It is inside the pan.
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post #6 of 11 (permalink) Old 02-24-2010, 02:27 AM Thread Starter
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Re: Transmission Issues

Yeah the gauges i mentioned were the stock gauges. This morning on the way to work everything was normal for the first 10 miles but the issue resurfaced just before i made it the 15 mile complete trip. As i said the truck does not seem to have any difference in the way it handles, just the trans gauge maxes out, "check gauge" light is on and "tow/haul" light blinks.
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post #7 of 11 (permalink) Old 02-25-2010, 12:25 AM
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Re: Transmission Issues

if nothing changes on the truck I would check the gauge or wiring like stated earlier...

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post #8 of 11 (permalink) Old 02-25-2010, 08:01 AM
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Re: Transmission Issues

It isn't the gauge. It is the trans fluid temp sensor or the wiring to the sensor inside the pan, or it's both.
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post #9 of 11 (permalink) Old 02-25-2010, 10:11 PM
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Re: Transmission Issues

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Originally Posted by Mark Kovalsky View Post
It isn't the gauge. It is the trans fluid temp sensor or the wiring to the sensor inside the pan, or it's both.
Thats what I meant... sorry. The sensor and the wiring harness. Ive had to change the harness a couple of times on trucks, especially on snow plow trucks that get snow all packed up in there.

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post #10 of 11 (permalink) Old 03-01-2010, 11:50 PM Thread Starter
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Re: Transmission Issues

NEW Issue!!

So today on the way home from work the truck was running fine then i made a stop and when i took off the truck would not shift out of 3rd, which made it difficult since i was on the interstate. will changing the sensor correct this problem????
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