Re: Hello, Question.

Posted by HH56 On 2007/10/12 12:04:17

Without some real troubleshooting, it's going to be difficult to narrow down to electrical or mechanical. Mechanically, the only thing I can think of without a teardown would be make sure the lockout lever is adjusted properly and fully engaging or disengaging with the lockout knob moving the lever down on OD full travel. Electrically if kickdown sw OK, that leaves governor as next most likely & relay or lockout sw down the list.

Packard did issue a service bulletin after the war on that same series OD where a problem had been found with the connectors that joined the harnesses corroding and causing problems. Don't remember if all years were mentioned but if you have a harness that has the bakelite connectors (5 or 6 of them)about 3-4 ft from transmission then possibly that is causing an intermittent problem. I don't see how it would be load related unless there is a poor connection which heats and fails or jiggles open about the time you get to speed.