Car hums but won't start?


Asked by Nov 20, 2015 at 10:49 PM about the 2004 Pontiac Grand Am

Question type: Maintenance & Repair

My car was starting fine this
morning, then in the afternoon I went
to start it and it just made a humming
noise but didn't even turn over. The
humming sounded like it was coming
from the back of the car. It would
hum not just when I was turning the
key to start it, but as long as it was in
the "ON" position.

I'm not sure if this is related, but
about a week ago, I had the IAC
valve replaced because the car
would stall immediately after starting,
and it seemed to fix the problem.

I ended up paying $50 to tow my car
back to the mechanic that replaced
the IAC valve, and they called back
saying that they started it about 15
times with no problem.

I've done some searching, and a lot
of people suggest that it could be
the battery contacts or the
connection to the ground. Other
people say it could be a bad starter
or solenoid, whatever that is.

So I'm leaving the car with the
mechanic over the weekend, hoping
they can actually see the problem.

What could the hum be? Advice?

3 Answers


The hum is the electric fuel pump.


If the fuel pump is working, does that mean that the battery connections are fine and it's something else, like the starter? I don't remember if the lights and other electronics worked.


Clean the battery terminals, cables and all the connections. Make sure the cables clamp on tightly. Intermittent problems can be a real pain in the donkey. Good luck!

Your Answer

Add photo

Related Questions

  • Car won't start after over heating 1 answer

    My car started over heating. After a little better look I replaced the water pump and the thermostat. The car still over heats and for some reason won't start after over heating until it cools.

    2005 Pontiac Grand Am SE


    Maintenance & Repair

  • why does the car not start after driving awhile, shut off, won't start 2 answers

    After I drive the car for 20 min or longer and then shut off for about 10 min, it won't start. It will if I leave it sit for a couple hours.

    2000 Pontiac Grand Am SE1


    Maintenance & Repair

  • car won't start 3 answers

    my car was starting the last few days no issues, yesterday the car wouldn't even turn over

    2004 Pontiac Grand Am SE1


    Maintenance & Repair

  • Way won't my car start and I just drove it this morning 1 answer

    My grand am won't start and I just drove it a couple hours ago. Been starting up fine with no problems. Just got in it and it won't start. No engine light or anything came on. What can be the probl...

    1999 Pontiac Grand Am 4 Dr SE Sedan


    Maintenance & Repair

  • Car won't start 1 answer

    Car wont start dont know whats wrong with it changed the coil still nothing it ignites but won't turn over. If anyone has un idea of what it might be please let me know

    1997 Pontiac Grand Am 2 Dr SE Coupe


    Car Customization

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,981 nationwide Grand Am listings starting at $1,995.


Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
Reputation 7,080
#2 John Saffrahn
John Saffrahn
Reputation 1,480
#3 Tom Demyan
Tom Demyan
Reputation 1,240
View All

Related Models For Sale

Used Pontiac Grand Prix"
30 Great Deals out of 4,357 listings starting at $1,995
Used Chevrolet Impala"
934 Great Deals out of 35,696 listings starting at $1,500
Used Pontiac G6"
144 Great Deals out of 5,590 listings starting at $999
Used Chevrolet Malibu"
1,146 Great Deals out of 72,965 listings starting at $695
Used Ford Mustang"
733 Great Deals out of 41,077 listings starting at $900
Used Pontiac GTO"
13 Great Deals out of 515 listings starting at $6,500
Used Pontiac Bonneville"
3 Great Deals out of 859 listings starting at $2,950
Used Honda Civic"
1,143 Great Deals out of 59,092 listings starting at $995
Used Honda Accord"
1,258 Great Deals out of 78,695 listings starting at $1,400
Used Nissan Altima"
1,347 Great Deals out of 87,445 listings starting at $1,095

Used Cars For Sale

2004 Pontiac Grand Am For Sale
482 listings starting at $2,699