Similar TQ issue?

[88Racing]

Well I put up a notice in the moderators area and Corey has responded to it. So hopefully by the end of today we will get our questions answered?

Lars

[SubiGT]

My shudder happened both before and after the Gryphon, in fact, it's one of the reasons I got the Gryphon. It is much more pronounced with the AC on, but it still occurs with the AC off. I have set the PID's to monitor input vs. output RPM's, and observed no change while I felt the shudder occur. My TFT never gets above 153, and I'm getting 18+mpg on the canned 93tune. I'll monitor and adjust the various transmissions settings once I get the 87perf tune that I'm waiting for.

[08F150]

Originally Posted by SubiGT

My shudder happened both before and after the Gryphon, in fact, it's one of the reasons I got the Gryphon. It is much more pronounced with the AC on, but it still occurs with the AC off. I have set the PID's to monitor input vs. output RPM's, and observed no change while I felt the shudder occur. My TFT never gets above 153, and I'm getting 18+mpg on the canned 93tune. I'll monitor and adjust the various transmissions settings once I get the 87perf tune that I'm waiting for.

Do you have lots of milage on your truck? Have you ever serviced the trans? I have worked on many fords over the years that have a 4r70w trans and have convertor shudder issues. Feels like going over some washboard road, usualy occurs when the torque starts to lock up at light throttle. Most of the time its cured with a simple trans flush with the proper oil. The additives in the oil breaks down after time not allowing the converter clutch to apply smoothly. Just be sure to do a complete flush.

[f150Stang]

I only have 28k on the truck and recently changed the trans filter and refilled using ford merc V.

I do not have this issue in stock or canned tow.

[88Racing]

Only 25K on mine. Filter and flush done at 20k.

No problems at stock level zero. My shudder happens with the CC(cruise control), coasting function and sometimes setting function. Nothing yet with resume. As per Bill added +5mph to tq tip in and this did not help.

Lars

[08F150]

Ya I think you guys might have possible tune issues since its happening when your using a tune but SubiGT says he has an issue all the time that why I thought I might throw an idea his way

[Jackpine]

One of my simple rules is, if a change doesn't work or makes things worse, try the other direction. If +5 doesn't do anything, try -5.

The one thing I think I'm safe on, playing with part throttle shift and TC lock/unlock points won't hurt anything.

- Jack

[88Racing]

From the conversation I had with Bill today even though we have the same hex code family our issues are unrelated at this point.

Lars