transmission flush help please!
Lead Driver
Joined: Dec 2006
Posts: 7,092
Likes: 145
From: San Diego, CA
I think you are referring to the power flush that a shop or dealership does. When you pressurize the system is when you run into problems, especially on our older trannies. IMO you should be fine with just the flush.
Junior User
Joined: May 2006
Posts: 84
Likes: 0
From: Santee Ca
Brain42, I see you are in San Diego, do you have any advice on where I can get a competent flush performed? I have 90k miles on my 4r100 which I bought used at 50k miles and have not changed the the fluid yet myself. It sounds like a messier job than I care to attempt in my short and inclined driveway.
Also, I'd like to change the pan with the cooler fin style, any suggestions on on a plain jane style pan with colling fins and a drain plug? I don't need all that bling, just function.
Also, I'd like to change the pan with the cooler fin style, any suggestions on on a plain jane style pan with colling fins and a drain plug? I don't need all that bling, just function.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,639
From: SE Florida
You don't need a pan with fins. They are only bling, there is no function. You can't cool a trans with a pan that has fins or more capacity. You need a better cooler to improve cooling. Get a cooler from a 6.0L truck. That's the way to improve cooling.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,639
From: SE Florida
All of the ones I've seen use the transmission's pump to pump out the old fluid and pump in the new fluid.
Junior User
Joined: May 2006
Posts: 84
Likes: 0
From: Santee Ca
I think your are on the right track Kovalsky. I just climbed udner my truck again ant he pan already has a drain plug. I remember reading that the 4r100's did not have one from the factory so is there a good chance my tranny was serviced by the original owner or is my brain fried? The pan is stamped METRIC on the bottom , there are many contours, and there are no other part numbers I can see. It also has a stamp with the fact is has a reusable seal.
Junior User
Joined: May 2006
Posts: 84
Likes: 0
From: Santee Ca
Ford dealer gave me a $200 estimate for a flush to switch to Mercon V. Still not comfy with the inconsistant methods that are being described. I don't have money to waste but need to get this done as I checke dthe levels and the fluid is at the bottom of the dipstick zone.
More Turbo
Joined: Nov 2005
Posts: 687
Likes: 0
From: Prosper, TX
I am going to be doing this change hopefully this weekend. Dont trust the dealership and like to work on my truck.
What size (diameter)of hose are you guys connecting to the back of the tranny?
Also how long of a hose?
Heard some bad stories how about some good ones? Ofcourse you never hear about those.
What size (diameter)of hose are you guys connecting to the back of the tranny?
Also how long of a hose?
Heard some bad stories how about some good ones? Ofcourse you never hear about those.
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Lead Driver
Joined: Dec 2006
Posts: 7,092
Likes: 145
From: San Diego, CA
I think I used 5/8" tubing from Home Depot to do it (and a hose clamp). I only used a few feet, but I'm stock height so you might want 4-5 feet to reach whatever container you're using to catch the fluid.
I'd definitely put down a lot of cardboard under the truck. It's easier to dispose of cardboard than clean ATF stains from your driveway (and it's easier to slide on).
I don't know about the shallow pan, but the 4x4 pan comes with a drain plug.
I'd definitely put down a lot of cardboard under the truck. It's easier to dispose of cardboard than clean ATF stains from your driveway (and it's easier to slide on).
I don't know about the shallow pan, but the 4x4 pan comes with a drain plug.
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