Help with a constant humm when i turn car on from engine

zvett86
0

Asked by zvett86 Jul 02, 2012 at 12:12 PM about the 1986 Chevrolet Corvette Convertible

Question type: Maintenance & Repair

I have a 1986 vet, yesterday it started making a constant loud humm noise frm engine.  No warning lights came on, oil levels ok, could it be the alternator since my volts r running under 12. they r at 11.6 or could it be the water pump I know it is going bad but doesnt leak etc.?  Please help im a female and need to find a trust worthy source for repairs.

4 Answers

Michael McGrail
6,765

If your volts are under 12 then your system is not charging. Ideally they should be between 13.8 - 14.4. Now is the alternator the "humm" noise? Dunno. I would have the alternator checked to make sure it is not bad, and then go from there trying to locate the noise.Chances are it is the alternator though.

1 out of 1 people think this is helpful.
Rob Vukelich
295

Your serpentine belt goes around the alternator, air compressor, power steering and your water pump. If any one of those components has a bad bearing, it could make a noise and cause the belt to slip or break. This in turn can cause the alternator to spin too slowly and not charge. However this is more unlikely as Michael suggested above, it is probably that the alternator is just not working but they usually don't make a humming noise. So you might have more than one problem.

2 out of 2 people think this is helpful.
You think this is helpful.
CJ Michaels
765

i'd have to hear the hum but i had a hum under my hood that ended up being power steering, check ur fluid level on that....i went out and bought a bottle of Bar's Leaks for power steering and it said to help noise from the pump....poured that in and it hasnt made a sound in months

1 out of 1 people think this is helpful.
zvett86
0

thank u all, it was the alternator

Your Answer

Add photo

Related Questions

Corvette
Looking for a Used Corvette in your area?
CarGurus has 10,347 nationwide Corvette listings starting at $2,999.
ZIP:

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 carGrrl
carGrrl
Reputation 1,020
#2 califcarson
califcarson
Reputation 1,010
#3 Tom Demyan
Tom Demyan
Reputation 860
View All

Related Models For Sale

Used Chevrolet Camaro"
480 Great Deals out of 33,889 listings starting at $1,400
Used Ford Mustang"
608 Great Deals out of 33,963 listings starting at $1,595
Used Porsche 911"
149 Great Deals out of 3,921 listings starting at $12,950
Used Dodge Charger"
468 Great Deals out of 27,053 listings starting at $3,200
Used Mercedes-Benz SL-Class"
98 Great Deals out of 2,540 listings starting at $3,950
Used BMW M3"
42 Great Deals out of 1,041 listings starting at $3,495
Used BMW 3 Series"
1,075 Great Deals out of 36,282 listings starting at $2,250
Used Jeep Wrangler"
483 Great Deals out of 43,070 listings starting at $1,800

Used Cars For Sale

2015 Chevrolet Corvette For Sale
9 Great Deals out of 2,996 listings starting at $49,999
2014 Chevrolet Corvette For Sale
27 Great Deals out of 828 listings starting at $48,894
2013 Chevrolet Corvette For Sale
15 Great Deals out of 406 listings starting at $29,995
2012 Chevrolet Corvette For Sale
15 Great Deals out of 280 listings starting at $31,999
2011 Chevrolet Corvette For Sale
13 Great Deals out of 267 listings starting at $25,978