i have a 2007 dodge ram 4.7 2wd with 89k miles on it, i did buy that trans line booster about a year ago same as with the fluids and filter change, well i noticed when i drive it with the OD ON its shifts great threw the gears and all no problem but if i drive with the OD OFF i will drive miles on flat even road and it will not shift out of 3rd, its like it holds the gear forevvverrrrrrr, is this bad? should i be worried? fluids look great not burnt, nor does it smell burt, an idea what it could be?

 

this just started maybe 3 days ago

 

Doesn't turning OD off change the shift points? AKA tow/haul mode?

 

O/D and tow/haul aren't the same thing. Tow/haul changes the shift points, O/D locks out the over drive gears - it will never go past third gear.

 

you getting any codes? fluid level good? I should shift sooner, unless you on the gas hard. Maybe shift solenoid?

 

so then whats happining is normal? it feels like it wants to shift but doesnt, like driving in 1st gear, and yes the fluids are all at level and everything looks good, no leaks or anything

 

and i havent seen any codes. how do i check for that?

 

That's what OD off means. No overdrive. Why would you think it would shift out of third when it's activated???

 

so theres not 5 gears just 4? i think that because im doing highway well above 3000rpms and to me thats not normal

 

i do have the 545RFE so i should be able to go into a 4rth gear without OD on am i not correct?