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O/T Seeking GM transmission advice
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Posted by MeAnthony on July 28, 2005 at 12:29:49 from (205.188.117.66):
Ok, here goes. '86 Blazer, 350, 700R4. The engine's been changed. When driving, you only feel 4 shift points. Being a 4 speed with a lock-up converter, shouldn't there be 5 shift points? Also, when idling, it bangs pretty hard when shifted in to gear. I'm wondering if there's a vacuum hose incorrectly hooked up and maybe the torque converter is staying locked up? Along the lines of this theory, there are two vacuum switches on the firewall, one behind the brake booster and one above the right valve cover. They both take a vacuum hose on one end and a 2-wire plug on the other end. These two switches are plumbed together; vacuum hose runs from one to the other. Shouldn't these switches be hooked to a vacuum source? The book I have on this vehicle, and the underhood emissions schematic, haven't been helpful in solving this problem. Thanks for your assistance,
Anthony
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