Transmission problem help
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Mountain Pass
Joined: Aug 2004
Posts: 101
Likes: 0
From: SW Kansas
Transmission problem help
1999 F 150 4x4 5.4 w. auto
When I tried to pass the other day, the transmission would not kick into passing gear. Under hard acceleration it also "bogs down". I don't know how else to explain it. It does not slip. It could have been doing this for a while, because under normal conditions it operates perfectly. I drive a lot of dirt roads, and it is possible that it may have mud on the tranny. I have tried to wash it off, but it made no difference. The filter and fluid was changed about 20,000 miles back. Thanks for any help.
When I tried to pass the other day, the transmission would not kick into passing gear. Under hard acceleration it also "bogs down". I don't know how else to explain it. It does not slip. It could have been doing this for a while, because under normal conditions it operates perfectly. I drive a lot of dirt roads, and it is possible that it may have mud on the tranny. I have tried to wash it off, but it made no difference. The filter and fluid was changed about 20,000 miles back. Thanks for any help.
Senior User
Joined: May 2004
Posts: 170
Likes: 0
From: DFW, TX
I had a very similar problem to this at 75k miles on my 99 F150 5.4. It turned out to be the throttle position sensor. At the time it did not kick out a code either. To this day, I can disconnect the TPS and duplicate that same problem.
Hope this helps.
Hope this helps.
