| Classification: | Reference: | Date: |
| EL04-003 | NTB04-016 | February 3, 2004 |
ALTERNATOR NOISE AFTER ENGINE SHUT OFF
| APPLIED VEHICLES: | 2002-04 Altima (L31) |
|---|---|
| 2002-04 Sentra (B15) | |
| APPLIED ENGINE: | QR25DE |
IF YOU CONFIRM:
A low-tone whistling noise comes from the alternator for not more than 10 seconds after the engine is shut off.
ACTION:
Please note that this noise is:
- Normal and is caused by a rotor “slow-down” function that is designed into the alternator
- NOT a failure symptom, so do not replace the alternator for this
Schumacher Electric Battery Load Tester, 6V/12V – BT-100
- RUN 3 TESTS WITH 1 DEVICE: Diagnose battery health, charging system performance, and starter motor draw all from one automotive battery tester—no need for separate tools cluttering your bench.
- TEST WITH CONFIDENCE: Safely handle 6V and 12V batteries up to 1,000 CA with a 50-amp 6V load test and a 100-amp 12V load test, so you get accurate readings on nearly any battery you throw at it.
- WORKS ON WHAT YOU DRIVE: Compatible with gas and diesel vehicles, this 6V and 12V battery tester covers motorcycle, ATV, lawn tractor, car, boat, light truck, and RV batteries—one unit for your entire garage.
- READ RESULTS IN SECONDS: A top-mounted rocker switch and a highly visible analog meter make operation simple, giving you quick and clear results while you hold the unit.
- COMPLETE PACKAGE: Includes (1) BT-100 Battery Load Tester and Voltmeter, (1) User Manual
SOLAR BA5 100-1200 Cold Cranking Amps Electronic Battery Tester
- Test 12-volt batteries from 100-1200 CCA, operating range from 7-15 volts
- Test multiple battery types, including conventional, AGM, gel cell, spiral wound, and deep cycle batteries (with a starting rating)
- LED indication of battery and system pass or fail (as applicable), plus derived reading for the battery tested
- Easy to use--the device guides you through each step in the testing process
- Bright 4-digit LED display is great for bright- or low-light settings
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