Transmission: 2nd&4th gear problems
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Senior User
Joined: Jun 2004
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From: Gillette, WY
Transmission: 2nd&4th gear problems
I have a 99 f350 Crew Dually 7.3 and a 4r100... It seems to me like I have no 2nd gear and 4th gear.... I have it in Drive and I go 1st and it stays there so I manually shift 2nd and back to drive and get 3rd and don't feel it shift 4th. I am at 2000 doing about 50mph and so I have come to the conclusion that I may need a shift solenoid on the valve body correct me if I am wrong... What do the Solenoids control and how many are there I know on the Chevy 4t60e or 4l60e there are 2 solenoids for the 4 gears and 1 PWM... is that the same as on the 4r100?
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
Yes, it's the same in the 4R100. There are two shift solenoids, one PWM for the torque converter clutch, and one pressure control VFS that controls line pressure.
The two shift solenoids control the shift valves. It sounds like you have a bad shift solenoid.
The two shift solenoids control the shift valves. It sounds like you have a bad shift solenoid.
Thread Starter
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Senior User
Joined: Jun 2004
Posts: 156
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From: Gillette, WY
now next question does the same solenoid control 2nd and 4th ? As I see it the solenoids are sold in packs... So you can only by that as a complete unit correct? Funny thing I could still use the truck like this as I have a Gear Vendors on it LOL. But Another thing the truck does is slips 3rd... I can shift 3rd from 2nd and it'll just rev when in full throttle... is this a 2 fold problem?
