Toyota Tacoma Transmission Problems

I have been reading different posts and was suprised to hear other people having the same problem as me. I have a 06 double cab tacoma 4x4. Ever since I got it a weird humming noise would appear around 30 mph and go away at 40 mph. It wouldnt do this all the time, it might happen one day and wouldnt show up again for a couple days later. I finally took it into the dealer with around 2500 miles on it. I took it for a drive with the mechanic and he heard it, so we drove around trying to figure out what it could be. He asked if it did it in four wheel drive, I said I have never tried it. So we waited for the humming noise to show up, and once it did I popped it in to 4WD, and the noise instantly went away. We tried it a couple times and every time it went away. So now I have to take it in later this week and they are going to troubleshoot more and hopefully fix the problem. Well I just wanted to hear from you guys if you had the same problem and what the outcome of your experiance was?
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So the question is:
Is it possible to re program the computer that controls/senses transmission and engine parameters so it will have:
1. a larger throttle opening before shifting down. When it shifts down there is still at least 1/3 of throttle travel left. (Full throttle opening/manifold pressure at 7000ft is roughly equal to 2/3rds at sea level.)
2. and/or accept a 5mph sag in set speed before shifting down.
40 miles in a lower than nessary gear is a significant fuel effiency issue. Coming home from work it is irritating to not be able to use the cruise control.
Any input from some of you engine management computer guys would be appreciated.
Thanks for your efforts,
VStrom1
You know how I might overcome the Tacoma squeaking clutch pedal that drives me crazy in damp/ rainy weather. All summer long, with low humidity, there is silence, but now that its begun to be cooler and damp, the squeaking is back! Its done this for years.
Walt
It stops when the clutch is lightly engaged. The dealer has changed the clutch asmbly. I changed trans to royal purple.
It's better but it's still there.
Well needless to say, after the first few seconds observing Toyota's "amazing red" come pouring out, I was slightly panicked. In my haste, i dropped the bolt and let about 1-2 cups (as in measuring cups...not sure exactly, but the bolt was out for about 5 seconds).
ANYWAY, I purchased a quart of fluid from a local dealer (yikes! $25/qt)but am just now finding out that there is no dipstick to check just how much i lost, and how much to replace (which brings me to another problem)
Can I safely drive without adding the fluid? Will I need a complete auto-trans fluid change? Can Toyota, any knowledgeable mechanic, or me and my "lacking auto" skills bring it back to normal??? Please help me forget the error of my ways!
(1) Can I pour replacement automatic transmission fluid
down the tranny dipstick tube?
(2) Is there a specific kind of auto. trans. fluid for the
2006 Tacoma?
Thanks in advance
Carl
Thanks
all da best,
...stuph
But, my main complaint is that shifting from first to second often has a noticeable crunch that the other gears don't usually produce. Again, I'm being very careful to keep the clutch all the way in and shift slowly.
I've driven stick-shift all my life, but always on little cars like Honda Accords and Integras. They've always shifted very smoothly. Now I'm trying to decide if there's something wrong with my new Tacoma or if this is just what it's like to drive a truck.
Thanks,
--mgm
I have a 2001 Tacoma, double cab, automatic. At 70K miles, I drained the transmission fluid. The plug came out stripped. I guess I must have put it in too tight at 50K miles. I went to Toyota, got a new one, and put that one in. Half way in it got real tight and didn't feel right. It never felt right and then it stripped too. So, I go to Toyota and order a new pan, assuming the tread was stripped. I get the new pan, get the liquid seal from them and ask them how to take off the old one and apply the new one... just to make sure I don't miss anything. I remove the old one carefully using a putty knife as they suggested, clean it out well and let it sit over night. I wipe the metal filter gently with a clean cloth, clean the 3 magnets and tranfer them to the new pan. The next day, I add the seal and gently put the pan on. Tighten the 19 screws and wait until the next day. Then I put on the drain plug with a torque wrench (20lbs), and add 2 qts ATF. I turn on the engine, shift a few times, then keep it in park and add a 1/2 qt every time before checking the level. I end up added 4 full qts to get the level right.
I then back up the truck to do a test drive. The check engine light is on. I drive down the street and up, stopping a few times to check the shifting. It clangs a little going from park to reverse and reverse to park, but doesn't clang during any of the other shifts. That's not right. And when I drive, I have to add quite a bit of gas just to get it to move 5 mph! It's like it's stuck in 1st gear, or the engine is protecting itself by limiting my speed.
I can do two things : 1) go through the trouble of taking the pan off and seeing if something in the transmission got bumped (??), or 2) take it to the dealership. This is where I'm paranoid. I can drive it 5 mph for the 6 mile trip but I'm worried that I might be damaging the trasmission by driving it.
Any suggestions? Thanks.
http://www.toyota.com/vehicles/2007/tacoma/models.html
Just curious and wanting to know if anyone knew the scoop. :confuse:
Anywhoo.... I'm not pleased with the fuel enonomy of my double cab 4x4 TRD SR5....Only getting 21 MPG Canadian... :mad:
Hope we can find an answer...
Mountainman
Could this be something electrical?
I looked in a few books and nothing seems to mention the 4wd system. I don't know where to start my diagnostics. Can anyone out there help?
im currently running 265/70-r16 i am wondering what the largest tire i can comfortably put under it is.
:4d 4wd trd taco
thanks in advanced
Thanks. :
Thanks. :
Any thoughts?