Hey guys,

I have a 2004 newer body style SuperCrew with 5.4L. My truck vibrates badly sometimes when shifting from 1-2. Anybody else had this problem? What can I expect to replace? Will my Extended Service Plan take care of it (truck is lifted on 295/60/20 tires)?

I had the trans fluid flushed and replaced about 5000 miles back and I'm pretty sure this vibration never happened before the flush.

Thanks!

 

Any transmission gurus out there? I'd like to have an idea of what's wrong before I take it in to the dealership.

 

Did the place that flushed it use true Mercon V or did they sell you on "We have an additive that makes it Mercon V"?

Darrin

 

I'm fairly certain they used the right stuff - it was a decent sized Ford dealership.

 

bump

 

I have something similar, but mine happens in 3rd and 4th with overdrive on. I did find a service bulletin about your very problem. Hers the link to what Ive found. Not sure what the fix is, but it doesnt sound easy. Hope it helps.

http://www.ford-trucks.com/tsb/fullt...php?tsb=06-8-2

 

Hmmm that bulletin doesn't cover 2004. I don't think that covers my problem, I get a pretty violent "washboard" vibration between 1-2. It seems to be pretty random, it might happen 3 times in one day then not happen at all for a week.

 

I get the same in my 2010 FX4. Taking it in soon. I get three bumps in the rear when I come to a stop as well. At 40 MPH if I encounter any upward grade, the tranny doesn't seem to know what it wants to do.

 

took mine in yesterday. my mech. found a service bulletin about the very problem. fix is to change the spark plugs. nothin to do with the trany. I have 87,000 on mine. ya, and Im having them change them. I've read about those plugs.

 

I have a 99 F150 5.4 and same problem but with OD light flashing and i was told that they have problems with 1-2 springs breaking, im still looking into it but that is a start and we can run with that.

 

If the OD light is flashing, you need a dealer or tranny shop to read the codes.