| [GMCnet] No 3rd Gear - another transmission problem [message #286818] |
Mon, 07 September 2015 13:37  |
 |
ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma:
|
Senior Member |
|
|
Leaving Half Moon Bay this morning it was clear that the transmission was not shifting out of first. Slip the selector to Super and it shifted as expected. Up in to Drive and it seemed as if it wanted to go into drive, but would not - stayed in 2nd.
A thousand things went through my mind.
I have just replaced the radiator and did not check the transmission fluid - maybe it’s low?
I wonder if I disconnected a vacuum line to the transmission while fooling with the throttle body this morning?
If I have been driving low on fluid could I have burned up the transmission?
Maybe I should wiggle the selector to see if the linkage could be off a little?
We pulled in to a parking lot where I began to check the transmission level. The top of dipstick came all loose and I wasn’t sure at first if I was stuffing it in too far, or just where it was supposed to be. Needless to say checking the level was a guess. Finally I decided the “stopper” should rest agains the little washer and I used that to dip the pan. It showed that I was low - about 2 pints, so I topped it up.
No change. We drove home in 2nd gear.
Before I go back out to the coach to check it again - any words of advice?
I know there is a modulator and a governor. I suspect the modulator has a vacuum tube to it and it’s on the passenger's side. The governor is next to the speedometer cable on the driver’s side.
I can pull the modulator, after running the engine for a moment, to check the fluid. I’ll look for loose vacuum tubes. What else should I look for?
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, CA
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
