MG MGB User Manual

Fd
THE AUTOMATIC
GEARBOX
Section
Fd.6
FAULT
DIAGNOSIS
TEST NUMBER
FAULT
CHECK/RECTIFY
(4)
Starter
will
not
operate
in
‘P’
or
‘N’
..
.. ..
.. ..
19
Starter
operates
in
all selector
positions
.. ..
..
..
20
(5)
Reverse light will
not operate
in
‘R’
..
.. ..
.. ..
2O
(6)
Excessive bump
on
engagement
of ‘D’,
‘L2’, ‘L1’,
or
‘R’
..
..
4, 3
(8)
Stall
speed high:
with slip
and squawk
in
‘L2’
..
2, 3, 5, 6,
7, 11, 17
with slip and
squawk
in
‘L1’
..
.. .. ..
..
2, 3, 8,
9, 10,
11, 17
with slip
and squawk
in
‘R’
..
.. .. ..
..
..
2, 3, 12,
17
Stall speed
up
to
600
rpm.
low
..
23
Stall speed
more
than 600
rpm.
low
..
21
(9)(10)(14)
No drive
in
‘D’
..
..
1,2,3,
16
No drive
in
‘D’ ‘L2’
or
‘L1’
..
1, 2, 3,
13, 11, 16
No
drive
in
‘D’ ‘L2’, ‘L1’
or
‘R’
..
1,2,3,13,11,
16,17
Delayed
or no
1—2
shift
3, 14,
13, 5, 6
Slip
on
1—2
shift
2, 3, 5, 6,
7, 13
Delayed
or
no
2—3
shift
..
3,
14, 13, 5,6,
12
Delayed
or no
2—3
shift but
normal
in
‘R’
3,
14, 13, 5, 6
Slip
or
engine
run-up
on
243
shift
2, 3, 5, 13,
12
Bumpy
gear
shift
.. .. ..
.,
3
Drag
in
‘D2’
and ‘D3’
8
Drag
or
binding
on
2—3 shift
5,
6
(10)
(14)
Slip,
squawk orjudder
on
full-throttle
take-off
in
‘D’
..
..
1, 2, 3,
13, 11
Loss of performance
and overheating
in
‘D3’
.. ..
..
21
(11)
Transmission
down-shifts
too
easily
.. ..
.. ..
..
3
(12) (13)
Transmission will
not
down-shift
.. ..
.. ..
..
3, 13,
14
(15)
No
3~2 down-shift
on
engine
braking
.. ..
.. ..
..
l, 5, 6, 7,
12
No
2—1 down-shift
or
engine
braking
.. ..
.. ..
..
8, 9,
10
(16)
Slip,
squawk
or
judder
on
take-off
in
‘L2’
.. ..
.. ..
1, 2, 3, 13, 11
Transmission up-shifts
to top
ratio
..
.. ..
.. ..
3
(17)
No
2—1
down-shift
or
engine
braking
.. ..
.. ..
..
8,
9, 10
(18)
Slip, squawk
orjudder
on
take-off
in
‘L1’
.. ..
.. ..
1, 2, 3,
13, 11
Transmission up-shifts
.. .. ..
.. ..
.. ..
1
(19)
Slip, squawk
0r
judder
on
take-off
in
‘R’
1, 2, 3,
13, 12
Slip but
nojudder
on
take-off
in
‘R’
..
1, 2, 3,
when
engine
braking
is
available
in
‘L1’
..
.. ..
..
1, 2, 3, 8,
9, 10
when
no
engine
braking
in
‘L1’
5
Drag
in
‘R’
No
drive
in
‘R’
when
engine
braking
is
available
in
‘L1’
..
.. ..
..
1, 2, 3, 13,
12
when
no
engine
braking
in
‘L1’
1,2,3,8,13,9,
10,12
(20)
No ‘P’
..
.. .. ..
.. .. ..
.. .. ..
l,
15
General
Screech
or
whine,
increasing
with
engine speed
.. .. ..
17
Grinding
or
grating noise
from
gearbox
.. .. ..
..
18
Knocking
noise
from
torque converter
.. .. .. ..
..
22
At
high
speeds,
transmission
down-shift
to
D2 and back
.. ..
12
F¢14
MGB.
Issue1.
15676.

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English