thumping sound when driving, and cooling fans wont turn on

Jonathan Graham

Asked by Jan 24, 2016 at 12:55 AM about the 2001 Pontiac Grand Am SE

Question type: Maintenance & Repair

When driving my 2.4  grand am theres a thumping sound
coming from the front or back right tires i dont know which
one but the thumping sound comes and goes,  and the
cooling fans will turn on if the ac is on and my papa and i
connected them to the battery and they clicked on and took  
it to auto zone and they just took out the relays and
switched them and they still didnt run if any one could help
thatd be great thanks!!!

1 Answer


The fans will come on when the AC is on. It is designed that way. If they don't come on at any other time, I would first make sure your engine is getting hot enough to turn them on. Have you had any overheating issues that would indicate they are failing or does your temp stay in the normal range when you drive? I don't know about the thump you describe but you may want to inspect your tires on that side and look for distortions in the tread or bubbles on the sidewalls.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

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 4,356 listings starting at $1,995
Used Chevrolet Impala"
935 Great Deals out of 35,693 listings starting at $1,500
Used Pontiac Firebird"
9 Great Deals out of 904 listings starting at $2,900
Used Chevrolet Camaro"
799 Great Deals out of 38,820 listings starting at $2,650
Used Chevrolet Malibu"
1,147 Great Deals out of 72,964 listings starting at $695
Used Ford Mustang"
725 Great Deals out of 41,064 listings starting at $900
Used Pontiac Bonneville"
3 Great Deals out of 859 listings starting at $2,950
Used Honda Civic"
1,145 Great Deals out of 59,092 listings starting at $995
Used Honda Accord"
1,254 Great Deals out of 78,695 listings starting at $1,400
Used Nissan Altima"
1,340 Great Deals out of 87,462 listings starting at $1,095