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  #1  
Old 05-08-2012, 04:47 AM
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Flashing "tow haul"

This just started today. Driving along just fine, 60 mph (in a 65 zone) and two things happened.

1. "Tow haul" starts flashing. (it was not engaged at the time)
2. "trans temp" gauge drops to flat.

I pulled over, shut the engine down, waited, started, and all was normal.

Any ideas?

Thanks in advance.



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Old 05-08-2012, 10:08 AM
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Wow, I can be oblivious...

Truck is a 2004 F350, Dually, 6.0

Thanks


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Old 05-08-2012, 10:24 AM
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scan it to read the codes
it is probly the trans fluid temp sensor, mine did that and i had to replace it.
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Old 05-08-2012, 03:31 PM
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Great suggestion, thank you. Checked codes, and the sensor is indeed bad. Unfortunately, I'm on the road, towing a 5th wheel, and looking at the manual, this is a fix I can't do until I get home. (no tools, etc)

I'm guessing that if the trans temp sensor is going out, then towing in this condition is probably not smart.

Thoughts, anyone?

thx
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Old 05-08-2012, 03:42 PM
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If it's just the sensor, I wouldn't worry.
Heck, I'd rather not even have it. Once it gets to the red, you're already overheated.
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Old 05-08-2012, 06:25 PM
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I'm wondering if the PCM would have a different shift strategy and possibly defuel due to a failed trans temperature sender?
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Old 05-08-2012, 08:03 PM
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Quote:
Originally Posted by Term3 View Post
I'm wondering if the PCM would have a different shift strategy and possibly defuel due to a failed trans temperature sender?
that's the kind of possibility that concerns me. don't want to get out on I-20 East, where things are a little thin, and find myself laid up on the side of the road. If the nearby Ford dealer can get me first thing in the morning, and be fair and reasonable with his work, it's probably the right choice for me.

will see how it goes in the morning.
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Old 05-11-2012, 08:51 AM
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Closing the loop.

Indeed a faulty trans temp sensor. btw, price on those has dropped a bunch: they are $20 now. Ford redesigned it.



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Old 05-11-2012, 10:01 AM
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That's good. How much labor

I made my Samsung SGH-I997 send this.
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Old 05-13-2012, 11:54 AM
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Ford dealer replaced the temp sensor, and changed the trans fluid (8 qts.) Total cost was ~$270.

fwiw, and I only have this one data point, I was pleased with the service at Rogers Ford in Midland. Terry service manager, Stefan diesel tech. Got me in first thing, out before noon, even with a bunch of PSDs in front of me.
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