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#1 |
Registered User
Join Date: Oct 2011
Location: Belton, SC & Atlanta, GA
Posts: 181
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TH350 NoGo
Any ideas as to why a TH350 would do nothing? Full of fluid, transitions from park through N, 1, & 2 immaculately, torque converter is spinning, but no supply to the driveshaft.....HELP!
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#2 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: TH350 NoGo
have you looked under the truck to see if the linkage is hooked up to the tranny?
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#3 |
Registered User
Join Date: Oct 2011
Location: Belton, SC & Atlanta, GA
Posts: 181
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Re: TH350 NoGo
It's DEFINITELY hooked up, but thanks for the help troubleshooting. I Installed the CPP stainless model.
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#4 |
RAT1968 '68 Cab/'71 Parts
Join Date: Feb 2002
Location: Coarsegold, CA
Posts: 2,375
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Re: TH350 NoGo
There are trans specialists on the Forum. But I have a few simple questions:
You say that it "transitions perfectly". You mean at the linkage/shift-shaft? I'm assuming the driveshaft is hooked up.....Big word, "assumption". But you said that it was full of fluid. That usually means the driveshaft is connected. DAMHIK!!!! With the rear wheels off the ground, the e-brake off, do you feel ANYTHING when your hands touching the driveshaft when shifting from park to reverse while the motor's running and the torque converter's spinning. I guess it would be lame to ask if you connected the three bolts to the flex plate, huh? Somebody smarter than I am will answer. But maybe a little more info will help the pros.
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M17 Coarsegold, CA RAT's shiny now. But always a rat. Last edited by magwakeenercew2jh; 08-05-2012 at 08:15 PM. |
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#5 |
Registered User
Join Date: Oct 2011
Location: Belton, SC & Atlanta, GA
Posts: 181
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Re: TH350 NoGo
As mentioned, I guess a little more info would help diagnose the problem.
The flex plate is connected. The shift linkage is connected. Fluid levels are within acceptable range. The ebrake is currently disconnected. There is not even the slightest supply of torque to the driveshaft with the wheels off of the ground after shifting from park to reverse. I'm definitely not an auto trans expert by any means, but i can't think of anything else. Thanks |
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#6 |
Registered User
Join Date: Oct 2011
Location: Belton, SC & Atlanta, GA
Posts: 181
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Re: TH350 NoGo
Nice build, by the way, magwakeenercew2jh
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#7 |
Registered User
![]() Join Date: Mar 2011
Location: Valley of the Sunstroke, Arizona
Posts: 1,210
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Re: TH350 NoGo
How about some history here?
New trans? What did you know about it before this? Rule #1 in troubleshooting... where were you last? In other words... did it work before then you did something and now it doesn't? Has it ever worked? If you don't start here, all you will get is random stabs in the dark as to why it won't work.
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My build thread - Devastation and Reform http://67-72chevytrucks.com/vboard/s...d.php?t=567131 |
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#8 |
Registered User
Join Date: Oct 2011
Location: Belton, SC & Atlanta, GA
Posts: 181
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Re: TH350 NoGo
Unfortunately, stabs in the dark are my only approach to this since the transmission came in the pickup. I have no idea about it's history and the truck did not run when I purchased it. I may have to break it down to troubleshoot.
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#9 |
RAT1968 '68 Cab/'71 Parts
Join Date: Feb 2002
Location: Coarsegold, CA
Posts: 2,375
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Re: TH350 NoGo
Thanks. I appreciate that.
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M17 Coarsegold, CA RAT's shiny now. But always a rat. |
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#10 |
Registered User
Join Date: Jun 2011
Location: GA
Posts: 281
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Re: TH350 NoGo
Filter clean? If the filter gets clogged, it will not move.
If it's just worn out, you can get some extra miles by using Lucas Transmission repair stuff. it really works. Put in my 79 truck when the tranny started slipping. |
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#11 | |
Registered User
![]() Join Date: Mar 2011
Location: Valley of the Sunstroke, Arizona
Posts: 1,210
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Re: TH350 NoGo
Quote:
So, question 1 is out of the way. Did the PO tell you anything about how long the truck sat? Why did he park it? Have you smelled the trans fluid? Smell burnt?
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My build thread - Devastation and Reform http://67-72chevytrucks.com/vboard/s...d.php?t=567131 |
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#12 |
Registered User
Join Date: Apr 2004
Location: Nampa, Idaho
Posts: 119
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Re: TH350 NoGo
Just checking, 2wd or 4wd? Transfer Case in neutral?
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1972 K5 CST |
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#13 |
Registered User
Join Date: Oct 2011
Location: Belton, SC & Atlanta, GA
Posts: 181
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Re: TH350 NoGo
2WD. I'm going to drop the transmission to see what I can find. Hopefully the PO just installed (or didn't install) things incorrectly. Plans were to go to a 200/4R or 700 later, but run this in the meantime. It may happen sooner than later if I can't sort out this 350.
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