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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 09-13-2010, 06:04 PM
jtwalker jtwalker is offline
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Torque Converter Problems

I have finally (I think) discovered my sahking/shuddering problem. It turns out that my torque converter may be causing this. Has anyone ever had any luck "servicing" their TC? Can a fluid/filter change help anytyhing?

Also, if I have to, is this a part I can replace myself? (I'm guessing not, but thought I'd ask). How much might I expect to have a shop replace it?

JT

(1995 F-150, 4.9L, 160K)
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Old 09-14-2010, 08:12 AM
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Torque converter shudder is a very common problem in the E4OD and other transmissions. In most cases a fluid/filter change is the first step to fixing the problem. Several people swear by products like Lucas and others as a "magic" fix. I stay away from those products, but it is up to you.

The first order of business is doing a complete fluid change and installing a new filter. This procedure is written for for the Ford E4OD/4R100 transmission, but it does apply to others. Check your owners manual for the recommended ATF fluid and capacity: Changing ATF Fluid
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Old 09-14-2010, 08:18 AM
Geardriven77 Geardriven77 is offline
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Would that same tranny be in a 1996 E150? I have the same stuttering problem. Occurs between 25 and 35 mph holding the accelerator steady. Speed up and it stops.
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Old 09-14-2010, 09:02 AM
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More than likely it is. Check the door tag for the transmission code.
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Old 09-14-2010, 10:21 AM
Geardriven77 Geardriven77 is offline
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No info on the door concerning trans. Checked manual. All that says is I "may" have a C6 or E40D. Maybe the guys at Advance Auto can tell me
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Old 09-14-2010, 12:12 PM
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Quote:
Originally Posted by Geardriven77 View Post
No info on the door concerning trans. Checked manual. All that says is I "may" have a C6 or E40D. Maybe the guys at Advance Auto can tell me

I would not bet on it! Try this to help ID your transmission:

Click the image to open in full size.
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Old 09-14-2010, 07:33 PM
jtwalker jtwalker is offline
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Thanks rla.

The Hayne's manual says to use RTV bween the pan and gasket. I've heard that it's not necessary. What do you think?
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Old 09-14-2010, 07:47 PM
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I use that stuff very sparingly. If using a cork gasket I would use a little gasket cement (I love the smell of Permatex in the morning!) to help hold it in place making it easier to re-assemble.
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Old 09-15-2010, 12:42 AM
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ok...got everything buttoned back up. However, I wasn't 100% sure what the capacity level for the E40D is. I didn't do the complete pump out technique listed in those instructions. I just drained the TC and the pan itself. I'm guessing there is a quart or two left in the lines/accumulators, etc. Hayne's says the capacity is between 16.6 and 17.2 quarts. Because the fluid is so new and clean, trying to read a dipstick is very hard (the fluid is so runny you can't tell if you are just smearing fluid on the stick from the fill tube. Anyhow, any idea on the actual capacity and if I check the fluid level cold, should it be between the two holes in the dipstick which are just lower than the hot level cross-hatch level?
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Old 09-15-2010, 08:17 AM
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The two holes indicate the fluid level at 50-95 degrees. You really should check it with the engine/transmission at operating temperature on level ground. The fluid level should be in the cross-hatch level when they are at operating temperature.
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Old 09-15-2010, 11:13 PM
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well, as I said, I did the full ATF drain and refil (with filter replacement). This didn't help my shutter problem other than mellowing it a bit perhaps. I also added some of that Dr. Tranny's Instant Shudder Fixx, which for snake oil, seems to get a LOT of positive reivews on this site. Well it didn't cure anything for me. So what, if any, are my options? Straight to new converter? I read on some other threads that sometimes a shift kit or chip can be a possible solution.

JT
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Old 09-16-2010, 07:33 AM
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Now that you have serviced the transmission to eliminate old/contaminated fluid as the cause of your shudder problem can you describe what lead you here in the first place?

A shift kit, or chip if it does anything, will only mask the root cause.
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Old 09-16-2010, 08:33 PM
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I assume you're asking tither why I think it's the TC or what are the detailed symptoms...I'll try to answer both.

After researching other posts on symptoms of TC shudder, I've determined that my symptoms match exactly. I get that strong shudder at low rpms in 3rd and 4th gear under light load. I've also done the "diagnostic" test of when the shudder starts, I tap the brakes to disengate the lockout...sure enough shudder stops. Also, if I turn off the O/D, the problem goes away. That's where I am as of now.
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Old 09-16-2010, 08:45 PM
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You answered my questions, it does look like a classic case of torque converter shudder. If the fluid change does not fix it then it is beyond what I can help you with. I suggest taking it to a very competent transmission shop that know their heads from a hole in the ground.
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Old 09-16-2010, 08:45 PM
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