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02-14-2024, 06:20 PM
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#1 |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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350 wont shift out of first...
So... I have a transmission question... I have a 1980 Scotsdale with a (newly rebuilt) 350 and a (newly rebuilt) turbo 350 tranny.
It was shifting fine (beautifully actually), then I installed a manual choke kit on the QJ. Now when I drive it, it does not shift out of first, it acts like it wants to, or is starting to, then it lurches as if it were downshifting, which is bizarre. When I manually put it in 1st, it doesnt malfunction, but will not shift to second if I manually shift it to 2nd. Thoughts? Oh... Vac line is good and attached (i made sure it was clear, not clogged but didnt test otherwise), Modulator is new with rebuild... |
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02-15-2024, 04:01 PM
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#2 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: 350 wont shift out of first...
are you sure the new modulator is good.. ive seen several new in box parts be bad from the chinese factory.. and the rubber on the line ends is that in good shape?
__________________
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!! |
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02-25-2024, 08:01 PM
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#3 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
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03-01-2024, 07:12 PM
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#4 | |
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Registered User
Join Date: Dec 2014
Location: Tucson, AZ
Posts: 743
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Re: 350 wont shift out of first...
Quote:
__________________
1987 V20 farm-hand rescue 1998 C2500 lot-rot rescue |
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02-15-2024, 07:03 PM
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#5 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,732
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Re: 350 wont shift out of first...
Nice wheel pic but a pic of the motor might help.
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02-25-2024, 08:08 PM
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#6 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
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02-25-2024, 08:08 PM
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#7 |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
I also have a video if anybody thinks it would help...
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02-15-2024, 07:52 PM
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#8 |
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Active Member
 
Join Date: Sep 2023
Location: randolph va
Posts: 159
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Re: 350 wont shift out of first...
did you move the detent cable
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02-25-2024, 08:00 PM
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#9 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
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02-15-2024, 10:51 PM
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#10 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 982
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Re: 350 wont shift out of first...
unhook the detent cable and try it.
__________________
88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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02-25-2024, 08:00 PM
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#11 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
Quote:
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02-25-2024, 08:19 PM
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#12 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,732
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Re: 350 wont shift out of first...
Sure, play it.
Does your choke blade open all the way with the choke knob pushed in all the way? |
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02-26-2024, 10:33 AM
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#13 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
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02-25-2024, 08:46 PM
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#14 |
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Active Member
Join Date: Sep 2023
Location: randolph va
Posts: 159
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Re: 350 wont shift out of first...
the detent cable ib not adjusted , it is all the way in , it would act like it was at wot all the time. pull up the plunger and hold the throttle wide open then push the plunger down
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02-26-2024, 10:43 AM
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#15 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
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02-26-2024, 04:42 PM
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#16 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,732
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Re: 350 wont shift out of first...
Disconnect your manual choke set up and wire the choke wide open then test drive it.
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02-26-2024, 07:09 PM
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#17 | |
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Registered User
Join Date: May 2013
Location: manhattan ks
Posts: 9
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Re: 350 wont shift out of first...
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02-26-2024, 08:02 PM
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#18 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,732
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Re: 350 wont shift out of first...
Time to explore yours transmission warranty.
Could be governor. |
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03-02-2024, 02:54 AM
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#19 |
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Senior Member
Join Date: Mar 2015
Location: washington
Posts: 2,296
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Re: 350 wont shift out of first...
Sometimes the plastic gear on the governor shears. Pull the governor and check.
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03-02-2024, 08:45 AM
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#20 |
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Registered User
Join Date: Jul 2011
Location: SW Ontario
Posts: 1,212
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Re: 350 wont shift out of first...
Do you have a metal line to your vacuum modulator (just rubber line for connections)? If not, the vacuum will suck the line shut.
Vacuum connected to a manifold vacuum source? If connected to a carb make sure you are not on a ported line. You can drive a th350 with the kickdown cable disconnected (its not a tv cable like an overdrive trans). When you disconnect the kickdown cable does it spring/pull back towards the trans? (too tight if it does). |
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