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Quick question:
I have a low mileage 78 L82 with 3 spd auto. I'm hearing a rattling noise - only when cold revving - coming from what sounds like underneath the car. Once the car is driven and warmed up, it does not make the rattling noise anymore. Was thinking it's a trans issue but the trans shifts smoothly and normally, cold or hot. All fluids look good too.
Any thoughts??
thx!!
Check the clearance of the exhaust pipe where it passes through the frame. It might be close enough to touch when cold and move more centered when warmed up.
Quick question:
I have a low mileage 78 L82 with 3 spd auto. I'm hearing a rattling noise - only when cold revving - coming from what sounds like underneath the car. Once the car is driven and warmed up, it does not make the rattling noise anymore. Was thinking it's a trans issue but the trans shifts smoothly and normally, cold or hot. All fluids look good too.
Any thoughts??
thx!!
Check the right side exhaust manifold warm up valve if it is still there. They have been known to rattle.