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Stall Speed
Test
CAUTION:
• To prevent transmission damage, do not t •• t stall speed for more than 10 seconds at a time.
•
00
not
shift the
lever
while raising
the
engine
speed.
• Be sur. to remove the pressure gauge before testing stall speed.
1.
Before
testing,
check
the transmission fluid
level,
see
page 14-160.
2.
Engage the parking brake and block all four wheels.
3.
Connect the
tachometer,
and start
the engine.
4.
Make
sure the
NC
switch
is
OFF.
5. After the engine has warmed up to normal operating temperature (the radiator fan comes on), shift
into
[!]
position.
6.
Fully press the brake pedal and
accelerator
for 6 to 8
seconds,
and
note
engine
speed.
7.
Allow 2 minutes for cooling, then repeat the test
in
[IJ,
[i1;]
('97
-
981.1ID ('99
-
00), and
[ID
positions.
Stall speed should
be the
same
in
[i1;],
lID,
rn,
[IJ,
and
[ID
positions.
Stall Speed rpm:
Specification:
2,550
rpm
Service Limit:
~,400
- 2,700
rpm
TROUBLE
Stall rpm high in
iQ;I,
lID,
rn,
[IJ
and
[ID
pOSitions
Stall rpm high in
[IJ
pOSition
Stall rpm high in
rn
position
Stall rpm high in
[i1;]
or
lID
position
Stall rpm
high in
lID
position
Stall rpm low in
[i1;],
lID,
rn,
[IJ,
and
[ID
positions
PROBABLE CAUSE
• ATF pump output is low
• Clogged ATF strainer
• Pressure regulator valve stuck closed
• Slipping
clutch
Slippage
of
1st
clutch,
1st-hold clutch, or 1st gear
one-way clutch
Slippage of
2nd
clutch
Slippage of 1st clutch
or
1st gear one-way
clutch
Slippage
of
4th
clutch
• Engine output low
• Torque
converter
one-way clutch slipping
14-159
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Table of Contents
Troubleshooting
