4r100 transmission
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4r100 transmission
So I have a question. I have a bad transmission leak on my 2003 f350. I believe it is coming from the cooler bypass valve (CBV). I did some reaserch on this and found that they make a CBV delete kit. So I guess my question is has anyone uses or done this befor
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
Yes, people have used it. Have I? NEVER.
Besides spending money, what are you trying to accomplish by installing this? It doesn't do anything useful for the trans, and it can cause a major failure.
The description you posted above is wrong. The bypass does not have anything that allows it to bypass the cooler when cold. It does not do that.
The reason the bypass exists in the first place is that the fluid returned from the cooler is used to lube the rear half of the trans. If a cooler were to get plugged or a line et crushed you would have no lube flow. That means a transmission failure with no warning. The bypass is designed to open if either of these occurs, which maintains lube flow. The trans will get hot, but that doesn't cause a major failure, and now you have some warning and time to fix the problem. Without the bypass your first indication that something is wrong is when the transmission dies.
Besides spending money, what are you trying to accomplish by installing this? It doesn't do anything useful for the trans, and it can cause a major failure.
The description you posted above is wrong. The bypass does not have anything that allows it to bypass the cooler when cold. It does not do that.
The reason the bypass exists in the first place is that the fluid returned from the cooler is used to lube the rear half of the trans. If a cooler were to get plugged or a line et crushed you would have no lube flow. That means a transmission failure with no warning. The bypass is designed to open if either of these occurs, which maintains lube flow. The trans will get hot, but that doesn't cause a major failure, and now you have some warning and time to fix the problem. Without the bypass your first indication that something is wrong is when the transmission dies.
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The reason for me going with the delete kit is $15 instead of the $80 for the bypass valve.. I have 4 kids a wife and 2 dogs lol so any bit of money I can save is good.. I was just doing reaserch on ways I can save.. when looking at my 97 f350 I noticed it does not have the bypass valve that my 03 does. Then I came across that article that I posted.. but I don't want to try to cut cost on something that can cost me 10x more money in long run.. thank you for your information
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