Whining noise from Suzuki Grand Vitara SUZUKI Grand Vitara II Off-Road (JT, TE, TD)

If you have a squealing or whining noise from the front of your Suzuki Grand Vitara II Off-Road (JT, TE, TD) even after changing both idler pulleys, here are some other common causes to consider:

1. Serpentine belt condition: Check the condition and tension of the accessory belt. A worn, glazed, or weak belt can squeal even if pulleys are new. Belt tensioners should also be inspected as weak tension causes slipping.

2. Other pulleys and components: Besides idler pulleys, the noise can come from the alternator pulley, power steering pump pulley, water pump pulley, or even the air conditioning compressor pulley. Bearings in these can wear and cause whining or squealing.

3. Power steering pump: Low fluid or a failing pump can make whine noises, especially under load like when turning wheels or accelerating.

4. Transmission components: Whining can also come from the gearbox, transfer case, or differentials, especially if fluids are low or parts are worn.

5. Wheel bearings: Although less common, a bad wheel bearing can produce noises that may be mistaken for engine bay squeals.

6. Exhaust heat shield: Sometimes, a loose or damaged heat shield under the engine bay can rattle and sound like squealing when accelerating.

Since you have replaced both idler pulleys already, the belt condition and tensioner, plus the alternator and power steering components, are the next best suspects.

A great step is to spray a little soapy water on the belt while running the engine (carefully, avoiding belts and fans), which can highlight slipping or squealing areas.

If the noise persists, further diagnosis by a mechanic with proper tools to inspect the transmission, drive shafts, and differentials may be necessary.

squealing from front engine area can be multi-causal—worn belt, failing pulley bearings, weak tensioner, or component issues beyond idler pulleys. Checking the belt and related components carefully is key.