The noise is like whistling and squealing but it only comes when i switch on lights and heating on. During day time is fine but night time it start coming cuz i use headlights, heating, rear window heating to clear mist. Sound stays for few minutues only but if i switch off rear heating or lights then it stop whistling staright away.. help me out plz
2007-02-11 20:52:21 · 13 answers · asked by Gagan S 2 in Cars & Transportation ➔ Maintenance & Repairs
This is a problem with your alternator belt. It's putting a load on the alternator with the electricity on and the belt is causing the sound. Look to replace either the belt or the alternator or both.
2007-02-11 21:00:54 · answer #1 · answered by David W 4 · 5⤊ 0⤋
Alternators can make a very high pitched whine. If the alternator is working harder to power electrical accessories you're turning on, this could be it. Normally this doesn't mean anything is wrong, but if it's very loud, you may want to have a shop take a look at it. Your alternator or belt may need replacement soon.
Also when listening for these sounds, make sure your radio is turned completely off. Sometimes alternator noise can be heard through the car stereo if the grounding is poor.
2007-02-12 05:02:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
My guess is the sound is coming from the result of the heater fan blowing air over something in one of the air vents.
Your description of a "whistling" sound would tend to confirm that.
Next time, just turn off the heater and see if it stops (with all those other items except the radio still on). If it does then try and locate exactly which vent the noise is coming from. Perhaps a leaf or piece of paper got into the vent causing the sound.
It also could be from the heater fan or blower itself since they are mechanical and have moving parts.
The "squealing" could be bad bearings in the fan too.
2007-02-12 05:07:58 · answer #3 · answered by GeneL 7 · 0⤊ 2⤋
The noise is your Alternator drive belt (one of the fan belts) slipping as the alternator tries to produce current and resistance is caused. you need to either re tension the drive belt, or replace the alternator or your battery may need looking at ( get them tested first, it's unlikley both have failed ).
Most places like quick fit and formula1 autocenter provide this service.
2007-02-12 05:09:30 · answer #4 · answered by mittobridges@btinternet.com 4 · 1⤊ 0⤋
It'll be the alternator drive belt slipping when the alternator's under heavy load. Either adjust the belt or replace it. It's just a question of slackening the alternator bolts, retensioning & tightening them again.
As a long shot, it could be the alternator itself giving up, but I'd doubt it - do the belt first.
2007-02-12 05:08:09 · answer #5 · answered by champer 7 · 1⤊ 1⤋
The alternator drive belt is slipping slightly because it is having to work harder when the electrical items are on. It may need adjustment or if it is an old belt, replacement.
2007-02-12 05:08:31 · answer #6 · answered by ------------------ 4 · 1⤊ 1⤋
thats exactly what it is . i have one just like it .took heater duct all apart fan out and together again . 2wks latter the noise was back .i took all kinds of things out too .
yours seems to be vacume operated switches .
headlight doors ? heater ducts ?
vac. pulls a lever duct opens . over time these vac hoses can crack.
2007-02-12 05:20:30 · answer #7 · answered by martinmm 7 · 0⤊ 0⤋
Thers a wee mouse chewing throgh your wires and everytime you switch on heater your electricuting it
2007-02-15 15:12:20 · answer #8 · answered by kiddy 2 · 0⤊ 0⤋
battery needs charging up sounds like its low and cam belt needs tightening or replacing good luck
2007-02-15 07:29:15 · answer #9 · answered by haha_islaughing 2 · 0⤊ 0⤋
Sounds like some kind of a vacuum leak. The only way that you are going to be sure is to have it checked out by a mechanic.
2007-02-12 05:02:07 · answer #10 · answered by dragonlady 4 · 0⤊ 3⤋