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03-19-2009, 12:20 PM | #1 |
Registered User
Join Date: Mar 2009
Location: Western IN
Posts: 41
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Tranny guys help me. Thanks
Last night, my "new" 85 C10 long bed 305 ci, 350 tranny lost it. With no warning (to me at least) the transmission went. To get it to move, you can rev up the engine and get maybe 5 mph out of it on flat ground. When it went to shift last night, I heard and felt it slip, and then nothing. Checked the tranny fluid this morn and it's like gray soup. Anything I can do to isolate a problem or does it sound like tran failure? Keep in mind, there has been so prior slipping in the tranny. Could new tran fluid and filter bring her back? thanks for any help.
eta. removed the tranny pan. Fluid is more solid black than grey. Seems pretty gummy. Last edited by rafterman191; 03-19-2009 at 02:43 PM. |
03-19-2009, 01:56 PM | #2 |
Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: Tranny guys help me. Thanks
in all honesty if the fluid is that bad just change the whole thing i paid $525 installed for a rebuilt on mine last year they wont be more than that in any place that is reputable
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
03-19-2009, 02:39 PM | #3 |
Registered User
Join Date: Mar 2009
Location: Western IN
Posts: 41
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Re: Tranny guys help me. Thanks
There is a TH350 for sale about 20 miles from here for $50, says it worked when pulled.
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03-19-2009, 02:50 PM | #4 |
Project '67 454
Join Date: Jan 2009
Location: Columbia SC
Posts: 283
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Re: Tranny guys help me. Thanks
When you change out a transmission(which it sounds like you will be doing) make sure you clean out the lines going to the cooler and do not reuse the same torque converter as all these parts have debris in them,
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03-19-2009, 03:09 PM | #5 |
Registered User
Join Date: Mar 2009
Location: Western IN
Posts: 41
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Re: Tranny guys help me. Thanks
mrh33916 Clean out with what? Got a hold of the guy with the tran. Tomorrow probably go get it. I can spend $50 for another transmission not almost $600. I only gave about $400 for the whole truck, so it wouldn't make sense.
Last edited by rafterman191; 03-19-2009 at 03:17 PM. |
03-19-2009, 03:24 PM | #6 |
Project '67 454
Join Date: Jan 2009
Location: Columbia SC
Posts: 283
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Re: Tranny guys help me. Thanks
When I do them I blow it out with compressed air, shoot a can of brake cleaner in one line and let it run out of the other into a catch can. Then blow it out again.
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03-19-2009, 03:28 PM | #7 | |
Registered User
Join Date: Mar 2009
Location: Western IN
Posts: 41
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Re: Tranny guys help me. Thanks
Quote:
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03-19-2009, 04:19 PM | #8 |
Registered User
Join Date: Feb 2008
Location: Houston
Posts: 970
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Re: Tranny guys help me. Thanks
If it has debri in it it will severly shorten the life of your new/used transmission.
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03-19-2009, 04:57 PM | #9 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Tranny guys help me. Thanks
Is your tranny a TH350 or a TH350C?
The TH350C has an electrical plug on the driver's side of the case (just above the oil pan) that is for the lockup convertor. The trash in your tranny is ALSO in your tranny cooler, so IT needs to be flushed. |
03-21-2009, 02:03 PM | #10 |
Registered User
Join Date: Mar 2009
Location: Western IN
Posts: 41
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Re: Tranny guys help me. Thanks
It is a th350c. I want to swap with a th350. I suppose I need to address the wiring, and will definitely have to get a different tc. Anyone know anymore about this?
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03-21-2009, 09:30 PM | #11 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Tranny guys help me. Thanks
Pull the plug and tape it up away from the tranny. Hang a TH350 in it's place (with a new Torque Converter) and drive the truck. You will see some differences in RPMs on the road from the TH350C---Not much though.
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03-20-2009, 03:11 PM | #12 |
Registered User
Join Date: Mar 2009
Location: Western IN
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Re: Tranny guys help me. Thanks
So then why would I lose forward and reverse all at once?
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03-20-2009, 04:20 PM | #13 |
One shot, one kill.
Join Date: Dec 2007
Location: Saratoga Springs NY
Posts: 859
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Re: Tranny guys help me. Thanks
You lost forward and reverse because the pump can't pick up the gunk fluid in the pan and build pressure enough to apply the clutches in any gear. No matter what, replace the converter. You'll never get it clean enough to use. New trans don't come with one? jim
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03-21-2009, 02:18 AM | #14 | |
Registered User
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Location: Western IN
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Re: Tranny guys help me. Thanks
Quote:
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03-20-2009, 06:40 PM | #15 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Tranny guys help me. Thanks
Pull the govenor. It may be shot.
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