what causes the humming in 2005 grand prix

Asked by Jul 25, 2014 at 10:05 AM about the Pontiac Grand Prix

Question type: Maintenance & Repair

4 Answers

32,035

Your alternator.

4,445

Common whining/humming noises with engine running in neutral are: belts, vacuum leak, bearing, power steering pump, alternator, AC compressor, fuel pump. With car in motion: wheel bearing, CV joint, transmission gear/bearing, tires. Less obvious humming noises: heater fan, wiper motor. If you can give us the source - where the noise seems to be coming from - it will help a lot.

1 out of 1 people think this is helpful.

I hear it on the driver side under hood or in the car . Sounds like it could be electrical . Doesn't do it in park . I have new belts . kinda loud .

The harder I press the gas the louder . Like its a bad ground for a stereo . I do have a blown speaker I dont know how bad it is . I really want to up the HP on this engine. It does get hot quick I live in Florida . Are there performance parts for a Pontiac 2005 Base model 3800 series 3.8 L . I've heard about bigger injectors ? Is the a chip I can buy to in tune it .

Your Answer

Add photo

Related Questions

  • Pontiac Grand Prix 05 high pitch hum sound at exceleration. 2 answers

    My Pontiac Grand Prix 05 has been making a high pitch hum sound at exceleration and when I make a hard turn. Has anyone heard of this? Ive heard it could be power steering....?

    2005 Pontiac Grand Prix

    -

    Maintenance & Repair

  • 2005 Pontiac Grand Prix enigine jerk 1 answer

    Question about a 2005 Pontiac Grand Prix: Some times as soon as I step on the gas pedal the engine will jerk then take off. Another thing that happens is when I"m driving and the car is heated up, as ...

    2005 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • 2005 Grand Prix: High beams not working 6 answers

    Hi, I have a 2005 Pontiac Grand Prix I just got. My brights don't work. When I flip the brights switch, the blue light on the cluster comes on, but my brights don't. The low beams don't turn off or ...

    2005 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • What is the max milage that a Grand Prix can get? 44 answers

    My grand prix is a 99 and it has 119,000 miles on it. How much longer can it go?

    1999 Pontiac Grand Prix 4 Dr GT Sedan

    -

    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,715 nationwide Grand Prix listings starting at $879.

ZIP:

Search Pontiac Grand Prix Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,890
#2 Tom Demyan
Tom Demyan
Reputation 2,580
#3 munron
munron
Reputation 2,060
View All

Related Models For Sale

Used Chevrolet Impala
904 Great Deals out of 35,275 listings starting at $1,700
Used Pontiac Bonneville
8 Great Deals out of 646 listings starting at $1,375
Used Dodge Charger
468 Great Deals out of 30,103 listings starting at $2,275
Used Pontiac G8
17 Great Deals out of 456 listings starting at $5,800
Used Pontiac G6
76 Great Deals out of 5,050 listings starting at $1,295
Used Chevrolet Monte Carlo
18 Great Deals out of 1,692 listings starting at $2,491
Used Pontiac Grand Am
1,661 listings starting at $1,298
Used Chevrolet Malibu
1,133 Great Deals out of 82,881 listings starting at $2,328
Used Chevrolet Camaro
401 Great Deals out of 40,631 listings starting at $3,500
Used Ford Mustang
534 Great Deals out of 42,736 listings starting at $1,699
Used Pontiac GTO
5 Great Deals out of 471 listings starting at $5,500
Used Buick Regal
150 Great Deals out of 11,598 listings starting at $1,850
Used Jeep Grand Cherokee
907 Great Deals out of 66,336 listings starting at $1,500
Used Nissan Maxima
381 Great Deals out of 24,382 listings starting at $999
Used Nissan Altima
1,072 Great Deals out of 82,591 listings starting at $1,988