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Old 05-04-2015, 07:36 PM   #1
65standard
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Another junkyard rescue

I just saved this 1985 C10 SWB from the junkyard. The only thing wrong with it is the transmission. It will not shift out of first unless I manually down shift it, then manually up shift it. It is a nicely optioned truck and didn't want to see it scrapped. It looks like a standard turbo 350 trans without any computer or TV cable.

My question is what are my fix options. I'm hoping it isn't anything mechanically wrong with the trans. And maybe it is just the vacuum line or the electrical connector on the vacuum line for the shift module.
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Old 05-04-2015, 08:07 PM   #2
RIDE-RED 350r
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Re: Another junkyard rescue

I wish I could offer some advice on the shifting issue, but I can't..

But I have to say, I cannot fathom why someone would scrap a truck like that!! Nice rescue!
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Old 05-04-2015, 08:34 PM   #3
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Re: Another junkyard rescue

Nice save!
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Old 05-04-2015, 08:37 PM   #4
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Re: Another junkyard rescue

I like it!
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Old 05-04-2015, 09:07 PM   #5
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Re: Another junkyard rescue

Check vacuum modulator and hose....
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Old 05-04-2015, 09:55 PM   #6
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Re: Another junkyard rescue

Quote:
Originally Posted by 80SPORT View Post
Check vacuum modulator and hose....
+1 Check the modulator and hose. If all it needs is a $30 part or 30¢ worth of hose you scored big!
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Old 05-04-2015, 11:00 PM   #7
gmachinz
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Re: Another junkyard rescue

Its also worth dropping the trans pan to inspect the linkage arm that holds the end of the shift cable-if its adjusted (by previous owner) incorrectly (as is the case often with the install of aftermarket carbs) then at part and WOT the cable tension can actually break that cable linkage. It basically bolts to the valve body and actuates a small piston-if it breaks/ninds, no shifting out of first gear.....and sometimes not out of park either.

Another cause could be a sticking/bad governor....try removing it, wipe the inside of the bore with a rag soaked in clean trans fluid and reinstall the governor. These are just some things I've encountered myself.
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Old 05-05-2015, 01:28 PM   #8
65standard
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Re: Another junkyard rescue

Thanks everyone. I'll check those things out. I also see the shifter is out of adjustment between the column indicator and trans.
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Old 05-05-2015, 02:13 PM   #9
Lokin4AReason
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Re: Another junkyard rescue

local junk yard(s) may have a transmission for one ...

a friend of mine scored a 700R4 w/ a GM Good wrench tag ( remanufactured, I am guessing ) on one for 100.-
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Old 05-05-2015, 05:14 PM   #10
65standard
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Re: Another junkyard rescue

I got the trans issue fixed. The short hose from the modulator to the steel line was split. I still have two more issues to solve. It pulls to the right when braking, and the high idle solenoid doesn't seem to move in or out.

Anyone know how to set the cold idle and how to set the hot idle on this electronic quadrajet carb?

Thanks again for everyone's help.
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Old 05-05-2015, 05:27 PM   #11
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Re: Another junkyard rescue

Wow, you really scored then!
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Old 05-06-2015, 01:26 AM   #12
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Re: Another junkyard rescue

with it pulling, I would pull the tire it is pulling to, check the rotor, brake pads, and remove dust cap for wheel bearings, inspect the grease, dirty, caked, dried out etc
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Old 05-06-2015, 01:27 AM   #13
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Re: Another junkyard rescue

really nice save
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Old 05-06-2015, 12:13 PM   #14
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Re: Another junkyard rescue

Would truly have been a shame to destroy something of value--way to common today. (Cash for clunkers) I'd drive that clunker any day!
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