92 C1500. I'm experiencing a rattle when I am up to high rpm (e.g. accelerating onto highway). Engine runs great otherwise. The only thing I can think of is the plastic junction block cover only has 1 of the 3 black plastic thumb-nuts holding it on (where do you buy these things btw??)
I assume that's what is flapping around. If it helps, the motor (350 TBI) was recently replaced and it happened with the old one (305) as well, actually worse back then I would say. Air cleaner cover does in fact have both nuts securely in place so I don't think it's around the throttle body area.
I assume that's what is flapping around. If it helps, the motor (350 TBI) was recently replaced and it happened with the old one (305) as well, actually worse back then I would say. Air cleaner cover does in fact have both nuts securely in place so I don't think it's around the throttle body area.
