SPONSORED LINKS

2002 Pontiac Grand Prix

Tiny
DILLOWLAKELAND
  • MEMBER
  • 2002 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 77,000 MILES
I hear a grinding noise in my engine when I reach about 5000 rpm and it only happens when my air conditioner is on. It is hard to describe the grinding noise but maybe you have run into a similar problem before, thanks for your help!
Wednesday, December 10th, 2008 AT 11:24 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:
If it only happens with the AC on at 5K RPM's, I'm going to say it has something to do the the AC compressor. 5K RPM's is somewhat high and if the AC clutch is engaged and has a bearing starting to go bad, that is where the noise may be coming from.

What is red line on the vehicle?

Joe
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, December 14th, 2008 AT 1:11 PM
Tiny
DILLOWLAKELAND
  • MEMBER
  • 4 POSTS
Thanks, that gives me a great place to start. The red line
is 6k.
Was this
answer
helpful?
Yes
No
Sunday, December 14th, 2008 AT 11:10 PM

Please login or register to post a reply.

Related Air Conditioner Content

Air Conditioner
GUIDE
Air Conditioner
Would you like to know how your vehicle’s air conditioner works? The system looks complicated, but it's really quite simple. Once you know how it delivers cold air you...
VIEW MORE

Sponsored links