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Author Topic: 1985 700R throttle valve  (Read 3440 times)

Offline jimbo

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1985 700R throttle valve
« on: June 30, 2010, 05:22:19 am »
My 85 c10 305,700r is acting like the throttle valve is stuck, exactly like unplugging a vacuum modulator. I checked the adjustment and manually moved the cable in and out with no luck. What is the quickest fix for this problem, i need to getit back on the road. thanks.
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Offline jimbo

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Re: 1985 700R throttle valve
« Reply #1 on: June 30, 2010, 06:11:58 pm »
Ok, I took the pan off and the fluid looked and smelled good.  There was a small amount of silt in the pan but not too much.  The tv cable is operating properly but the valve is stuck in the full throttle position.  How do I unstick it, do I need to remove the valve body.
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Offline jimbo

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Re: 1985 700R throttle valve
« Reply #2 on: June 30, 2010, 08:09:28 pm »
I'm looking for a kit that replaces the valve with an upgraded one, I heard transgo makes one.  Any suggestions?
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Offline VileZambonie

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Re: 1985 700R throttle valve
« Reply #3 on: June 30, 2010, 09:19:18 pm »
How do you know the tv valve is stuck?  ???
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline jimbo

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Re: 1985 700R throttle valve
« Reply #4 on: July 01, 2010, 04:26:22 am »
Quote from: VileZambonie on June 30, 2010, 09:19:18 pm
How do you know the tv valve is stuck?  ???
 
The lever activated by the tv cable doesnt touch anything until i move it to the full throttle position.  At that point it comes in contact with a round metal cylinder in the valve body. I assumed that was the throttle valve and sliding it controlled the line pressure, am I mistaken?
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Offline VileZambonie

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Re: 1985 700R throttle valve
« Reply #5 on: July 01, 2010, 06:57:45 pm »
Remove it from the valve body and check it for burrs.
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,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10
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