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M41 OD pops in and out of overdrive 1800

posted by  Russ M on  Sat Apr 23 03:36 CST 2005
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I have a '68 1800 with M41 tranny. OD works fine untill after driving on HWY w/ OD about 20 min. then it will pop in and out of OD. Usually after a couple minutes it will start working ok again for another 20 min or so. I rigged a voltmeter so I could check voltage at solenoid while driving and voltage checks good. I checked the tranny fluid and it is full (using 30 wt oil). Any ideas? Planning to pull off cover to check filter. I can't be sure if the solenoid is acting up during the periods when it pops out, only that voltage is at the solenoid.
Thanks,
Russ






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New M41 OD pops in and out of overdrive [1800]
posted by  Russ M  on Sat Apr 23 03:36 CST 2005 >


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