slight hesitation 55 to 60???

if i accelerate steadily not flooring it but a semi-moderate rate i feel a tug and let go or hesitiation between those speeds only speed but if i gradually continue to accelerate it quickly goes away. if i floor it i dont get the hesitation though. any ideas...thanks
dealership said it was something bout a converter locking up and was normal nothing to worry about..

 

well it an automatic but its has not made it to od yet

 

They were talking about the Torque Converter Lockup. From the wiki below:

Operational phases

A torque converter has three stages of operation:

• Stall. The prime mover is applying power to the impeller but the turbine cannot rotate. For example, in an automobile, this stage of operation would occur when the driver has placed the transmission in gear but is preventing the vehicle from moving by continuing to apply the brakes. At stall, the torque converter can produce maximum torque multiplication if sufficient input power is applied (the resulting multiplication is called the stall ratio). The stall phase actually lasts for a brief period when the load (e.g., vehicle) initially starts to move, as there will be a very large difference between pump and turbine speed.

• Acceleration. The load is accelerating but there still is a relatively large difference between impeller and turbine speed. Under this condition, the converter will produce torque multiplication that is less than what could be achieved under stall conditions. The amount of multiplication will depend upon the actual difference between pump and turbine speed, as well as various other design factors.

• Coupling. The turbine has reached approximately 90 percent of the speed of the impeller. Torque multiplication has essentially ceased and the torque converter is behaving in a manner similar to a simple fluid coupling. In modern automotive applications, it is usually at this stage of operation where the lock-up clutch is applied, a procedure that tends to improve fuel efficiency.

 

okay i have read the above... now is that normal what im feeling like something is slipping for a couple secs....maybe im making something of nothing...i i i i duno duno i tell you i duno

 

Get a tranny flush. Sounds like something is up with the valve body, maybe a flush will fix it.

 

No. It should not feel like it is slipping. Mine feels like it goes into another gear at lockup, but not slipping.

 

A little before that speed, my truck tends to heistate a bit when it shifts. It feels like it takes a little extra effort on the accelerator to break the 45-50 barrier than the amount I have been applying to accelerate steadily up to that point. The transmission does not feel like it slips (i.e. I apply pressure and no power gets to the drivetrain). My last vehicle had a slippy transmission, and although it occurred from a stop or rolling stop, it does not feel like what happens with my Tacoma. Honestly, probably worth letting someone take a look at it and seeing if they can replicate it (maybe a good transmission shop).

 

yeah i had a dealer trannny flush done 2 weeks ago. but the weirdest thing driving to work in the pouring down rain as it was cool out the truck felt crispier and get this no hesitation at all. so im starting to thing it maybe a weak coil wire getting warm on dry warm days. maybe the cool air from the rain is helping it to perform normally.

 

well i just confirmed that my truck does'nt hesitate at all when driven in the rain or on wet road after rain has stopped. so this has definately got to be a heat soak problem with a sensor down low, coil wire or something. Just as sure as the road dries up and no rain it will have hesitation issues. I do feel better now that i now know what stops it and heat could be the culprit somewhere. please any ideas or suggestions appreciated this is nagging me like crazy. thnx.