E40D trouble brewing
1996 F250 4wd 7.3 w/E4OD
Had this truck a month, seems to have been taken well care of, but I have no maintenance history
I have put less than 1000 miles on it in the past month
3 times after driving a mix of highway and city, the trans will act up. Most of the time I'll be driving at highway speeds and the TC will unlock and revs will increase (1500 to 1800 rpm), will do this a few times, and then 'catch' and stay in 4th. Will do this on cruise control as well as just driving around.
Once, it went beserk. I was on the highway, came to a stop, went to give it throttle and the revs just went up and barely moved. After revving for a few seconds, it 'caught' and tried to get going. The revs were very erratic and the trans was searching for the right gear. I got a flashing OD light then. Came to a stop, cut the truck off and let it cool. Cranked back up and had no issues. No OD light for 3 weeks now. Have not had the codes read.
Three days ago it did the same thing, but I got no OD light. Pulled over, put in park, put back in drive and went on my way. Drove 200 miles yesterday and no problem, except once it 'stumbled' when going from 3rd to 4th.
Now, this seems like some sort of electrical problem, but I'm no trans expert. I beleive most everything in the trans is a mechanical part that is controlled by a variety of external sensors and controllers, correct?
The truck works great otherwise, no CEL, no wierd shifts, plenty of power. Speedo and tach work fine.
Other than getting the codes read, which I will do, what should I be on the lookout for? When the mechanic tells me what he thinks is wrong, I want to be educated on the subject. I want to catch this before it craps the bed in the middle of no where.
Last edited by onemanarmy; 05-20-2013 at 09:24 AM.