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1963korvette · 12-02-2009

Ok, fixed vacuum pump. When car warms up idle is about 1400 rpm, then every 20 sec drops down to about 800 rpms and it sounds like you are shaking a can with rocks in it. Can't see any other leaks I assume will have to pull pellum, but want to find out what I will be replacing first. Any thoughts?

12-02-2009	#8
1963korvette Join Date: Jul 2009 Location: Washington Township NJ Posts: 49	Re: Vacuum pump not coming on? Ok, fixed vacuum pump. When car warms up idle is about 1400 rpm, then every 20 sec drops down to about 800 rpms and it sounds like you are shaking a can with rocks in it. Can't see any other leaks I assume will have to pull pellum, but want to find out what I will be replacing first. Any thoughts?