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Transmission won't shift from first, can shift it manually [message #335274]

Mon, 16 July 2018 19:37

RF_Burns

Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada

Karma:

Senior Member

So we have started out on a 2 week vacation and the transmission will sometimes not shift from first gear. However I can shift it manually by pulling from Drive to second. Shifting back to Drive it will shift to 3rd.

Checked modulator and tubing and that's Ok. Checked the valve the modulator works against and it moves freely. Although I thought I might have felt a slight interference.

Installed a spare governor, but the existing one seems fine.

Seems to be fine when cold, but acts up when it gets up to operating temperature.

Hopefully it will work fine tomorrow, otherwise we will need to decide wether or not to continue.

Will I do any damage to the transmission shifting manually?

Thanks

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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[Message index]

		Transmission won't shift from first, can shift it manually By: RF_Burns on Mon, 16 July 2018 19:37
		Re: Transmission won't shift from first, can shift it manually By: Ken Burton on Mon, 16 July 2018 22:23
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Mon, 16 July 2018 22:34
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: Brian Rust on Mon, 16 July 2018 23:06
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: James Hupy on Mon, 16 July 2018 23:10
		Re: Transmission won't shift from first, can shift it manually By: Ken Burton on Tue, 17 July 2018 00:06
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Tue, 17 July 2018 06:35
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Tue, 17 July 2018 19:53
		Re: Transmission won't shift from first, can shift it manually By: Ken Burton on Wed, 18 July 2018 02:09
		Re: Transmission won't shift from first, can shift it manually By: JohnL455 on Wed, 18 July 2018 07:39
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: jimk on Wed, 18 July 2018 08:34
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Wed, 18 July 2018 09:05
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Fri, 20 July 2018 12:39
		Re: Transmission won't shift from first, can shift it manually By: SpookyEng on Fri, 20 July 2018 13:58
		Re: Transmission won't shift from first, can shift it manually By: jhbridges on Sat, 21 July 2018 07:36
		Re: Transmission won't shift from first, can shift it manually By: JohnL455 on Sat, 21 July 2018 09:21
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Sat, 21 July 2018 09:55
		Re: Transmission won't shift from first, can shift it manually By: jhbridges on Sun, 22 July 2018 07:51
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: Peter Faxon on Sun, 22 July 2018 14:48
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: jimk on Sun, 22 July 2018 15:04
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: pjburt on Sun, 22 July 2018 20:37
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: Peter Faxon on Mon, 23 July 2018 09:15
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: Matt Colie on Mon, 23 July 2018 07:54
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: Peter Faxon on Mon, 23 July 2018 09:25
		Re: [GMCnet] Transmission won't shift from first, can shift it manually By: powwerjon on Mon, 23 July 2018 15:16
		Re: Transmission won't shift from first, can shift it manually By: Deb on Sun, 22 July 2018 08:31
		Re: Transmission won't shift from first, can shift it manually By: RF_Burns on Sun, 22 July 2018 09:32
		Re: Transmission won't shift from first, can shift it manually By: jhbridges on Sun, 22 July 2018 16:11

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