100-04-44 Noise, Vibration and Harshness 100-04-44
DIAGNOSIS AND TESTING (CONTINUED)
E859 EN 02/2001 2002 Bantam
PINPOINT TEST C: IDLE BOOM/SHAKE/VIBRATION
CONDITIONS
DETAILS/RESULTS/ACTIONS
C1: CHECK THE CABLES/HOSES
1 Check the cables/hoses.
- CHECK the engine compartment for any
component that may be grounding between
the engine and body or chassis. Example:
Control cables, A/C hoses, accelerator cable,
etc.
• Are the components OK?
Yes
GO TO C2
No
CORRECT the condition as necessary.
TEST the system for normal operation. If the
moan persists, GO TO C2
C2: CHECK THE ENGINE MOUNTS
1 Check the engine mounts.
- Inspect the engine support insulators for
correct operation. REFER to Section 303-
01A.
or REFER to Section 303-01B.
• Is the condition resolved?
Yes
Vehicle condition corrected.
No
GO to Pinpoint Test D.
PINPOINT TEST D: ENGINE ACCESSORY VIBRATION
CONDITIONS
DETAILS/RESULTS/ACTIONS
D1: CHECK THE ENGINE RUN-UP
1 Check the engine run-up.
- Run the engine up to the concern rpm
observed in the road test, with the vehicle
stationary.
• Does the vibration occur?
Yes
GO TO D2
No
CARRY OUT the stall test with the brakes
locked (load the engine by slipping the
clutch in gear). If the vibration occurs,
GO to
Pinpoint Test B.