1989 Chevy Caprice Knocking sound

1989 CHEVROLET CAPRICE
85,000 MILES • V8 • 2WD • AUTOMATIC
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GOLDENWUN00
  • MEMBER
  • 1 POST
My 1989 caprice classic V8 305 TBI is making a knocking sound like something is loose mostly hear the sound when in Park or when idleing holding the brake in drive but while accelerating stepping on the gas the sound seems to be gone or very quiet. Car was recently tuned up passed smog and everything. Ive checked the the vavles and adjustments seem fine. Car still drives with power and without a problem very smooth. What could be that knocking sound?
Mar 12, 2010 at 3:37 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check to see if your torque converter bolts have loosened up. that is a common problem. if they ahve get some loctite and use that before reinstalling them. Otherwise take it to a pro and have h im diagnose it.
Mar 19, 2010 at 6:26 PM
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