Weird knocking

1999 PONTIAC MONTANA
150,350 MILES
Avatar
MIKEITGUY
  • MEMBER
  • 1 POST
My 1999 Pontiac Montana suddenly developed a loud knocking, sounds metallic in engine. My wife drove it, reported the knocking. I drove it no knocking. Then I drove it again, heard the knocking, drove it a little and it suddenly disappeared. Parked, started it again later, same noise. Just got gas yesterday, changed oil after the knocking started, don't see any metal shavings. Ideas?
Apr 16, 2013 at 5:39 AM
Advertisement
Avatar
HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
try to isolate the noise first If you can disconnect fan belt and see if it goes away if not have your oil pressure checked, then have your torque converter checked to see if bolts loosened up.
Apr 16, 2013 at 5:59 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.