Effezie

First time sharing. My truck did this for quite awhile before I figured out it wasn't my transmission. Transmission was acting up like everyone has said. Even worse, so I changed the plugs for a start. 7 out of 8 broke in half. 8 hours to change the plugs and replace number 5 and 7 COP's with boots and springs. (88,000 5.4 - 3 valve 2006) Miraculously, I don't need a new transmission as it hasn't even slipped one time or whatever you want to call it since. My problem now is I can't get the misfire out of number 5 and have absolutely no power. Barely can get up hill. I hope to figure it out eventually and only because of what you all share on this site can I do it. Thanks. I pick up the injectors for that side tomorrow. I'll let you know how I make out. It's amazing how the misfire can make you believe you need a new transmission.

Turkey Hunter

Sometimes I feel like I'm wasting my time on this forum. If you guys would listin instead of saying our answers are weak you could fix your dam* truck.

A&M F150

A coil-on-plug (COP) is just like the distributer on an older vehicle, but without a central unit and no wires. There's one on every individual plug, so you have to figure out which isn't sending the spark. They go bad just like your spark plugs, they get worn out. To replace, if you don't want to take it to the stealership, there's write-ups on here somewhere for easy removal.

Jmm137

I had the same problem with my 07 f150, at about 60k. Took it to the dealership, payed $90 dollars for a diagnostic test and they told me it was the torque converter and valve body, estimated $1800 to fix. Took the truck to this guy who owns a transmission shop, been in business for 30 years, gave me a bottle of Dr. Tranny's instant shudder fix. Put that in my truck, 20 miles later the shudder was gone. Since then ive put on about 1500 miles and still no shudder. It's about $6 for a bottle of it, its worth a try before you start putting money elsewhere.

Hope this helps

Steve76

I've just had this happen to mine. '08 Supercrew 5.4L with 62,000 miles, I've been running the edge programmer on setting #2, no adjustments. I'll update when I get through the short list of ideas listed.

Bennyv83

I just got an edge yesterday. I've got it set to canned tune #2. The shudder/howling noise just showed up in 2nd 3rd and 4th gears. I played with the TCC settings and set The torque converter to lock up in 4th at around 80km/h rather than simultaneously with the 3-4 shift. It appears to have taken care of the problem in 4th gear.
I've heard tell of guys frying their torque converters with the edge programmer...
It seems like lockup occurs too soon with the canned tunes!
I think it's important to make the distinction between the misfire shudder caused by ignition problems which I recently experienced, and this trans issue. The ignition shudder is very pronounced and typically under high load & low engine speed like 4th gear with lockup at like 40-50mph. The torque converter shudder will occur in any gear under light to moderate acceleration.

ericconrad29

Im having the same problem as describe by the original poster. 06 F150 84k miles 6" lift on 35s. When going down the highway getting into traffic slowing down to about 40-50 mph at about 1100 RPM the tranni goes back into OD and i give it a little gas and its like a Thud almost like hitting a bump. If i floor it it turns into a raped ape pulls hard no tranni slip at all. Called my local service writer that a deal with and he told me probably throttle body. Put a new throttle body in today same problem it didnt go away. This problem only happens at 1100 rpm at that low speed. watched the Tach it doesnt change stays the same.

kenpo1441

My dad has a 99' Expedition and put the same type of solution in his tranny and has no issues since. It is a known issue and that's why companies make anti-shutter solutions to put in transmissions. Normally if a coil pack was going bad you would get a cel or some sort of indication of a misfire.

bleufox99

Printable View (6 KB) TSB
05-10-12

• HARSH 3-2 DOWNSHIFT BETWEEN 17-25 MPH (27-40 KM/H) - NO DTCS - 4R75E AUTOMATIC TRANSMISSION - VEHICLES BUILT BEFORE 4/20/2005

Publication Date: May 12, 2005
FORD:
2005 F-150 LINCOLN:
2006 Mark LT
ISSUE:

Some 2005 F-150 and 2006 Mark LT vehicles built before 4/20/2005, equipped with the 5.4L engine and 4R75E automatic transmission, may exhibit a harsh 3-2 downshift between 17-25 MPH (27-40 Km/h) with no diagnostic trouble code (DTC), and a driveline clunk between 40-50 MPH (64-80 Km/h).
ACTION:

Reprogram the powertrain control module (PCM) to the latest calibration using WDS release B37.4 or higher.


Printable View (47 KB) TSB
06-16-13

• STUMBLE ON HEAVY DECELERATION AND/OR TIP-OUT IN MANUAL 2 - 5.4L 3V WITH 4R75E

Publication Date: August 8, 2006
FORD:
2005 F-150
ISSUE:

Some 2005 F-150 vehicles equipped with a 5.4L 3V engine and 4R75E transmission may exhibit a stumble on heavy deceleration and/or a stumble when tipping out of the throttle with the transmission in Manual 2 (Second). This may be more noticeable during trailer towing.
ACTION:

Reprogram the powertrain control module (PCM) to the latest calibration using IDS release B43.14 and higher or B44.4 and higher. This new calibration is not included in the B44 CD.

Jmm137

I never heard of the stuff until I ran into this issue and I started asking around and it turns out a lot of people have used it. I've heard nothing but good things about it