In have a 94 f-150, 4x4, 5 litre auto, with 90,000 KMs.
I've had the truck for 6 months or so, and driven it about 6000 miles.
A couple of times while cruising at highway speed, it feels like the transmission slips into neutral for a second then carries on.
Works fine otherwise. I had the transmission serviced when I first got the truck.
Any ideas as to the cause?

 

Have ya checked the fluid level lately?

 

Fluid is fine, like I said I had the tranny serviced shortly after i got the truck.

 

trans code E? (e40d?) this commonly happens when the MLPS fails/out of adjustment/dirty connector.

 

Thanks for the help, is this something that needs to be fixed right away or can it wait?

 

trans code E (E40D?) if so,it's something that needs to be addressed asap because when it finds it's gear again,it may not be the correct gear required and slam into the wrong gear.worst case scenario, it destroys the trans.it's happened.
it's not a very expensive part, doesn't take long to replace either,so it's nothing you want to let go and risk the multi thousand dollar trans for.

if times are real tight and you have no choice,drive with hand on shift lever and be prepared to quickly slide the trans into neutral position (don't pull lever out!!! you may bump it to far into reverse!!! just slide and it will bump to R lockout.practice while sitting still,so you know what to do and what not to do before driving) and let the truck coast to a stop before shifting into drive again.then the ecm will hopefully read N and your odds are much better about not braking the input shaft or something.