1-2 hard shift
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1-2 hard shift
I have a 1992 4x4 f150 I have been driving for several years. It has a 5.0 motor and automatic/overdrive trans running 33 inch tires.
Ever since I have had this truck it has had a really hard shift from 1st to 2nd if you let the motor rev past 1500-1800+ and let the trans shift automatically.
If you manually shift the trans it will shift soft.
I have heard this could be the 1-2 shift servo or shift servo spring, have any of you had this happen to you? Do you have any suggestions?
Also if I get on the interstate and wind the motor to 65-70mph shortly it will start blowing trans fluid (I think it is coming from the front trans seal). I don't know if both of these could be caused by the same problem or not.
Ever since I have had this truck it has had a really hard shift from 1st to 2nd if you let the motor rev past 1500-1800+ and let the trans shift automatically.
If you manually shift the trans it will shift soft.
I have heard this could be the 1-2 shift servo or shift servo spring, have any of you had this happen to you? Do you have any suggestions?
Also if I get on the interstate and wind the motor to 65-70mph shortly it will start blowing trans fluid (I think it is coming from the front trans seal). I don't know if both of these could be caused by the same problem or not.
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Joined: Nov 2009
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well a firm shift is good cause that means the clutch packs arent sitting in there slipping
the trans fluid blowing back could be a few things.... are u overfilling it
mine has a good firm shift from 1st to 2nd
the trans fluid blowing back could be a few things.... are u overfilling it
mine has a good firm shift from 1st to 2nd
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Mine shifts to hard it jerks and makes it feel like it is going to tear something out if you wind it to 2500 and let it shift automatically. I shift manually a lot to save the rear axle and universals.
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the 92 overdrive doesn't have a vacuum modulator does it?
I have read before the shift accumulator valve would cause this and I have also heard the shift accumulator spring is bad for breaking and causing a hard shift but I am not that familiar with these trans.
Anyone had any trouble with the hard shifts?
I have read before the shift accumulator valve would cause this and I have also heard the shift accumulator spring is bad for breaking and causing a hard shift but I am not that familiar with these trans.
Anyone had any trouble with the hard shifts?
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Joined: Aug 2008
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From: Tacompton, WA
Nope. My bad on that one. I had assumed it was a C6.
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Tks, how hard is that to replace? Can you buy the spring separately or would it come in a shift kit.
On another not I fixed my torque converter problem today. I got up under the truck and found one wire completely cut and another wire that was still connected but was ripped like an animal had chewed on it. I reconnected these two wires and now my torque converter is locking up fine.
Before at 60mph in overdrive I was turning close to 23-2400rpm now in overdrive with the converter locked the rpms drop to about 16-1700rpm at 60mph. Now my trans also shifts faster if you manually shift it. My problem now is I don't have the enough power and at 55-60 when it shifts to overdrive it seems real weak, which I guess can be expected with a stock 5.0 and stock 3.55 gearing and 33-12.50 tires.
What is the easiest way to add power to these 5.0's.
I am thinking
Overdrive pulleys,
Maybe a computer chip(Do these make much difference in pulling performance)
On another not I fixed my torque converter problem today. I got up under the truck and found one wire completely cut and another wire that was still connected but was ripped like an animal had chewed on it. I reconnected these two wires and now my torque converter is locking up fine.
Before at 60mph in overdrive I was turning close to 23-2400rpm now in overdrive with the converter locked the rpms drop to about 16-1700rpm at 60mph. Now my trans also shifts faster if you manually shift it. My problem now is I don't have the enough power and at 55-60 when it shifts to overdrive it seems real weak, which I guess can be expected with a stock 5.0 and stock 3.55 gearing and 33-12.50 tires.
What is the easiest way to add power to these 5.0's.
I am thinking
Overdrive pulleys,
Maybe a computer chip(Do these make much difference in pulling performance)
Logistics Pro
Joined: Sep 2009
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From: Fulton County, Pa.
I can tell you from what I've read here, DON"T buy a chip. I'd say you might possibly need to go to a lower gear, especially if you've got oversize tires. The best person ( I think ) to answer your questions is Conanski.
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Joined: Oct 2003
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From: Elyria, Ohio
My trans is a 4R70W but similar to the AODE. The B&M shift kit came with an updated piston and heavier springs for the 1-2 accumulator. I also used a brake hone to clean up the bore; flushed with brake clean and lubed with ATF. Not a bad job and valve body can be done also. Can be done on your back after pan drop. watch for little ***** in valve body: pull straight down carefully. Follow directions in kit explicitly for updates. Good Luck
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