Grand Vitara JLS 2WD V6-2.5L (2001)
Drive Belt: Technical Service Bulletins
Engine - Thumping Noise
SOURCE: Suzuki Drive Master
TITLE: Thumping Noise From Engine Compartment
APPLIES TO:
Grand Vitara
XL-7
SERVICE TIP:
Problem:
Customer complains of thumping noise coming from engine compartment after vehicle had just undergone a repair that involved reinstallation or
retensioning of the alternator belt.
Repair:
When the alternator belt is either reinstalled or retensioned on the H25 or H27 engines found in the Grand Vitara and the XL-7, and the belt is too
tight, a thumping noise may result. In fact, when over-tightened, the sound coming from the engine may be very similar to the sound of a lower-end
engine knock (in the crank or the rod). Check and adjust the tension of the alternator belt.
