2002 4R100 Transmission Flush

[rla251]

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

[Hank]

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!

[rla251]

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 ?

[Hank]

Originally Posted by rla251

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........

[Hank]

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

[Hank]

Here's another:

TikiWiki : 4R100 Transmission Fluid Flush

[rla251]

Thanks Hank Great Info, any others with comments?

[mas360]

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.

[rla251]

Thanks Mas360 I think I will use Hanks suggestions above and I will post the results