24-155
Intake Manifold Tuning (IMT) function,
checking
Note:
The following test should only be conducted if
performance deficiencies occur.
- Increase engine rpm clearly above 4500 RPM.
Intake manifold tuning vacuum solenoid must be
actuated (solenoid is located on intake manifold,
left-front, under the ignition coils).
If the vacuum solenoid is not actuated:
- Check intake manifold tuning valve -N156-
(change-over valve) page 24
-156
.
- Check vacuum system for leaks page 24
-
162
.
- Check that vacuum lines are correctly installed,
do not leak and are not blocked.
- Check change-over mechanism for ease of
movement (activate change-over linkage by
hand).
Pa
ge 3 of 11 Intake Manifold Tunin
g (IMT
) syste
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11/23/2002 htt
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