2002 4R100 Transmission Flush - Ford Powerstroke Diesel Forum
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Old 04-05-2010, 04:18 PM
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2002 4R100 Transmission Flush

I did a complete fluid change on my recently purchased 2002 F350 7.3 Auto, when I got to the trans the torque converter does not have a drain on it. So my question from the fine members here is, Should I have it Power Flushed ? and If so any shops you would recommend near Grass Valley CA ? Thanks in advance for the suggestions and help.

Ron
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Old 04-05-2010, 04:20 PM
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NO! Never power flush a 4R100. You can however use the pump in the tranny to push all the old out. Procedure isn't to hard to find online. Good luck!
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Old 04-05-2010, 04:24 PM
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Hank, Thanks what would I search for on the net to find out how to do that with the tranny pump, and why no power flush ? does that hurt the trans ?
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Old 04-05-2010, 04:34 PM
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Quote:
Originally Posted by rla251 View Post
Hank, Thanks what would I search for on the net to find out how to do that with the tranny pump, and why no power flush ? does that hurt the trans ?
Yeah a power flush will dislodge crap that has found a permanent home in there and is out of the way. Let me look........
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Old 04-05-2010, 04:36 PM
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Here's one. Look down a few posts. Trick is the tranny has to be warm (100 degrees) for this to work. Good luck.

4R100 Transmission Fluid Change - Ford Truck Enthusiasts Forums
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Old 04-05-2010, 04:38 PM
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Here's another:

TikiWiki : 4R100 Transmission Fluid Flush
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Old 04-05-2010, 04:41 PM
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Thanks Hank Great Info, any others with comments?
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Old 04-05-2010, 05:32 PM
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I took my Dodge van to a lube station for a power flush. They charged me $160 saying they used synthetic fluid. The van had 49K miles on it. Six hundred miles after the flush the transmission slipped. I have no proof to say the flush caused its death, it could have been a co-incidence. The first transmission fluid change (not flushed) was done at 30K miles by draining the pan.

Now, I flush my Ford myself at home. I feel much better knowing exactly what was put into the transmission.
It is not difficult at all and it costs me only $45 for the fluid plus about three hours of my labor.
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Old 04-05-2010, 07:00 PM
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Thanks Mas360 I think I will use Hanks suggestions above and I will post the results
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