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post #1 of 9 Old 10-10-2013, 03:51 PM Thread Starter
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Transmission

This doesnt happen all the time but my trans slips every now and then. Always when cold and it happens when I go about half throttle, let off and then hit throttle again. Could it be the trans or something with my tuner?
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post #2 of 9 Old 10-10-2013, 07:23 PM
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Are you sure its not the common rev up and then catch from the 5R110?

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post #3 of 9 Old 10-10-2013, 08:27 PM
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Transmissions are not efficient when cold but check your fluid level. Is it happening on anything other than level ground (not turning)? My next step would be to lose the SCT and see what happens.


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post #4 of 9 Old 10-11-2013, 04:15 AM Thread Starter
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Quote:
Originally Posted by WoodBoy View Post
Are you sure its not the common rev up and then catch from the 5R110?
I guess it could be because it dont happen all the time.

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post #5 of 9 Old 10-11-2013, 04:19 AM Thread Starter
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Originally Posted by AgTires4295 View Post
Transmissions are not efficient when cold but check your fluid level. Is it happening on anything other than level ground (not turning)? My next step would be to lose the SCT and see what happens.
Yes just happens on level ground. Its only now and then. It does seem when the engine rev, s up and I let off the pedal and then get back on the pedal it happens. So maybe the engine didnt get a chance to rev back down before I hit the throttle again?

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post #6 of 9 Old 10-11-2013, 04:30 AM
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Originally Posted by 08forddr View Post
Yes just happens on level ground. Its only now and then. It does seem when the engine rev, s up and I let off the pedal and then get back on the pedal it happens. So maybe the engine didnt get a chance to rev back down before I hit the throttle again?

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So when you let off the pedal, the RPMs drop like normal but when you press the pedal, what does it do? Is there a spike in RPMs (like the clutches are slipping) and then it grabs, loading the engine and bringing the RPMs back down?

You might have to replicate it again, taking note of the RPM range when this occurs. Heck, a video would be great. Also, is this every gear or one in particular at a certain speed?

Still check your trans fluid and try taking the SCT off to see what happens.


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Sky Jacker Hydro 7000 Steering Stabilizers
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post #7 of 9 Old 10-11-2013, 05:05 AM
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Im pretty sure he is just experiencing the common rev and slam that everyone talks about. Even if it isn't slamming it is still catching after reving. All 5r110s are known for this.

2010 CC/SB FX4 Lariat.. Tuned By Eric@IDP and Matt@Gearhead

Thinking about getting rid of the stock 6.7 turbo?
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http://www.powerstroke.org/forum/6-7...ustration.html

http://www.powerstroke.org/forum/6-7...round-2-a.html
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post #8 of 9 Old 10-11-2013, 05:18 AM Thread Starter
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Quote:
Originally Posted by WoodBoy View Post
Im pretty sure he is just experiencing the common rev and slam that everyone talks about. Even if it isn't slamming it is still catching after reving. All 5r110s are known for this.
I am think you maybe right. So I shouldnt worry?

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post #9 of 9 Old 10-11-2013, 06:33 AM
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If yours is happening in the 3 to 5 gear range it maybe a shift flare. My truck would rev up every so often when it was shifting between 3 and 4th gear and it woud feel soft and mushy when it did it. For me it would only happen or I would only notice it when I was at half throttle or less and once again this would only happen every so often. It would also feel like it would get stuck inbetween gears or couldn't find the right gear sometime if I was braking hard for a stop light and then get back into the throttle before coming to a complete stop. To fix it for me I first tried traction bars thinking that woud fix everything but it didn't. Traction bars are great for everything expected fixing the shift flare. The thing that fixed it for me was a modified DD shift solenoid from PTP for $150. It makes the 3 to 5 gear shifts faster and more solid feeling. I've had mine installed for maybe 500 miles or so and not one shift problem yet. I hope that helps. If you do it I would recommend doing a transmission relearn on it after install. My shifts were a little to firm at first until the relearn was done.

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