I have a 1999 Toyota 4Runner SRV5 model with 5 speed manual and have a
problem when I make a slow tight turn in the 4 wheel drive mode. The truck
hesitates in the turn and feels as though the front gears seizes. Going into
the turn with 2,500 rpms (normal driving rpms) would stall or stop the
truck. It requires 3,500 to 4,000+ rpms to move it in the turn. When the 4
wheel drive is off, the truck works perfectly.
I took it into a couple of Toyota dealerships and they all say the same
thing — its normal. I find it hard to believe that Toyota would sell an SUV
4×4 truck that works in 4×4 only when driving on straight roads.
Is this normal for 4Runner?
"b~~~…@hotmail.com" wrote:
> I have a 1999 Toyota 4Runner SRV5 model with 5 speed manual and have a
> problem when I make a slow tight turn in the 4 wheel drive mode. The truck
> hesitates in the turn and feels as though the front gears seizes. Going into
> the turn with 2,500 rpms (normal driving rpms) would stall or stop the
> truck. It requires 3,500 to 4,000+ rpms to move it in the turn. When the 4
> wheel drive is off, the truck works perfectly.
> I took it into a couple of Toyota dealerships and they all say the same
> thing — its normal. I find it hard to believe that Toyota would sell an SUV
> 4×4 truck that works in 4×4 only when driving on straight roads.
> Is this normal for 4Runner?
Normal for a part-time 4WD system. The reason is you have a gear (or chain) driven transfer case which is coupled 100% front to
rear in 4WD. This setup allows no differential action between the front and rear driveshaft. To demonstrate the issue to
yourself, go out in an open parking lot, drive through a puddle and make a sharp u-turn. Hop out and look at the tire tracks,
identify which trac goes with which wheel and axle. Note how the front tires follow a wired arc than the rear wheels. Since
they are both the same diameter, the front wheels must therefore turn more revolutions that the rear wheels and this causes the
drivetrain to bind up.
While it is normal, you should not normally drive in 4WD on a high traction surface. Rule of thumb is unless its slippery
enough to allow tires to spin, don’t use 4WD. You can get 4WD setups with center differentials (and optional locks) to allow
for All Wheel Drive or Full Time 4WD operation.
while it is not normal for the truck to stall,
it is normal for the hesitation.
what is happening is the wheels are all spinning at different speeds going
into the corner,
forcing either a tire to spin on the pavement, or cause the truck to stall.
as a general rule, the 4 wheel drive system that is in the 4 runner, and in
some other SUV’ is not
designed for use on dry pavement, because it is a constant 4 wheel drive
system, when engaged, as opposed to an all wheel drive system that kicks in
and out depending on traction conditions. The system we have is used only
for use on wet or slippery surfaces.
my 96 with auto squeals the tires when in 4×4 mode on dry pavement. I just
drive in 4×4 when necessary, and every few weeks to lubricate the moving
parts that have not moved in a while.
Dave
if you search back in this group you can find many discussions on when and
how often to engage the 4 wheel system.
"b~~~…@hotmail.com" <g~~~…@hotmail.com> wrote in message
news:LTHt9.54218$Q3S.27013@news01.bloor.is.net.cable.rogers.com…
- Hide quoted text — Show quoted text -
> I have a 1999 Toyota 4Runner SRV5 model with 5 speed manual and have a
> problem when I make a slow tight turn in the 4 wheel drive mode. The truck
> hesitates in the turn and feels as though the front gears seizes. Going
into
> the turn with 2,500 rpms (normal driving rpms) would stall or stop the
> truck. It requires 3,500 to 4,000+ rpms to move it in the turn. When the 4
> wheel drive is off, the truck works perfectly.
> I took it into a couple of Toyota dealerships and they all say the same
> thing — its normal. I find it hard to believe that Toyota would sell an
SUV
> 4×4 truck that works in 4×4 only when driving on straight roads.
> Is this normal for 4Runner?
- Hide quoted text — Show quoted text -
b~~~…@hotmail.com wrote:
> I have a 1999 Toyota 4Runner SRV5 model with 5 speed manual and have a
> problem when I make a slow tight turn in the 4 wheel drive mode. The truck
> hesitates in the turn and feels as though the front gears seizes. Going into
> the turn with 2,500 rpms (normal driving rpms) would stall or stop the
> truck. It requires 3,500 to 4,000+ rpms to move it in the turn. When the 4
> wheel drive is off, the truck works perfectly.
> I took it into a couple of Toyota dealerships and they all say the same
> thing — its normal. I find it hard to believe that Toyota would sell an SUV
> 4×4 truck that works in 4×4 only when driving on straight roads.
> Is this normal for 4Runner?
Dude, chill, you have a PART TIME 4WD and you are only to use the 4WD
feature when you are on a slippery surface, (flip down the drivers visor
and read it for yourself) you keep this up, you will break something. It
in normal, what is not normal is you continuing to do this even after
being told about it, then complain its an engineering defect. Part time
4WD’s have always done this, this must be your first 4wd vehicle is all.
–
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