Engine Rev during low rpms
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Joined: Jul 2008
Posts: 13
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From: Dallas TX
Engine Rev during low rpms
Ever since I put my exhaust on I've noticed that when driving at very low speeds, 10-20mph in a neighborhood, and barely having my foot on the accelerator when the transmission goes to shift to the next gear the engine revs like it didn't find the gear or something.....It probably happened before but its more noticable with the exhaust. Thoughts on whats going on? Does anyone else have this problem? Is this my transmission slipping?
Technical Article Contributor
Joined: Nov 2002
Posts: 2,804
Likes: 9
From: Wisconsin
That may be the coast clutch. It's designed to work that way. Your just noticing it more now because your on the gas more. It is more noticeable at some speeds than it is at others, like 10 - 20 is very noticeable.
The coast clutch disengages for coasting. When you get on the gas it has to engage the torque converter again. Just give it a soft rev to engage it.
The coast clutch disengages for coasting. When you get on the gas it has to engage the torque converter again. Just give it a soft rev to engage it.
Last edited by greencrew; Jun 9, 2009 at 05:57 PM.
Technical Article Contributor
Joined: Sep 2006
Posts: 889
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From: Hattiesburg, MS
i had the same thing happen to my 08, but there was a TSB on it and i was fixed. had something to do with a new tranny update. i cant find where i saved the info and i think is was only for some f150s. worth looking into!!!
look here ---->https://www.f150online.com/forums/20...14-3-done.html
look here ---->https://www.f150online.com/forums/20...14-3-done.html
Last edited by labman1014; Jun 8, 2009 at 11:09 PM.