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
5,715

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
275

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
705

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 11,261 nationwide Corvette listings starting at $3,997.
ZIP:

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 carGrrl
carGrrl
Reputation 880
#2 Tom Demyan
Tom Demyan
Reputation 760
#3 califcarson
califcarson
Reputation 630
View All

Related Models For Sale

Used Chevrolet Camaro"
533 Great Deals out of 32,941 listings starting at $1,495
Used Ford Mustang"
850 Great Deals out of 29,865 listings starting at $1,993
Used Porsche 911"
157 Great Deals out of 3,272 listings starting at $12,200
Used Dodge Charger"
549 Great Deals out of 28,692 listings starting at $4,950
Used BMW M3"
76 Great Deals out of 1,433 listings starting at $4,500
Used Jeep Wrangler"
1,313 Great Deals out of 53,484 listings starting at $1,800
Used BMW 3 Series"
1,437 Great Deals out of 37,390 listings starting at $1,500

Used Cars For Sale

2015 Chevrolet Corvette For Sale
3,438 listings starting at $60,459
2014 Chevrolet Corvette For Sale
36 Great Deals out of 1,291 listings starting at $49,999
2013 Chevrolet Corvette For Sale
20 Great Deals out of 419 listings starting at $31,999
2012 Chevrolet Corvette For Sale
14 Great Deals out of 297 listings starting at $30,800
2011 Chevrolet Corvette For Sale
16 Great Deals out of 357 listings starting at $28,000