TH 350 trans starts in 2nd sometimes(?) - Hot Rod Forum : Hotrodders Bulletin Board
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Old 03-05-2012, 12:16 PM
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TH 350 trans starts in 2nd sometimes(?)

I haven't paid too much attention to this car I just bought. BUT, it does seem to start in 2nd most the time. Any ideas? I was gonna crank the modulator set screw in a bit if it's got one. Thanks

It might actually be going from 1st to 3rd....unless I'm on it hard

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Old 03-05-2012, 03:33 PM
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start'n in gear

first i'd be ck'n the trans adj for the shifter... sounds like its needs something in that area... next make sure the neutral safety sw is working too...
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Old 03-05-2012, 03:38 PM
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Quote:
Originally Posted by delawarebill
first i'd be ck'n the trans adj for the shifter... sounds like its needs something in that area... next make sure the neutral safety sw is working too...
I don't mean the engine starts with the shifter in the 2nd gear position. I mean the CAR starts off from a dead stop in 2nd gear instead of 1st gear
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Old 03-05-2012, 05:10 PM
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stuck - sticky governor. A worn out governor gear ( apple cored) the trans would tend to not up shift since the governor would not spin properly.

Sticky 1-2 shift valve

Check vacuum at governor, needs line vacuum off the intake manifold to read engine vacuum directly, pull hose off the modulator: look for oil from the vacuum hose. Should be no oil

Trans may be hurt internally
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Old 03-05-2012, 06:27 PM
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A sticking governor will cause this symptom. The problem is that most often the sticking valve in the governor is a result of ground metal or other debris in the fluid. Remove the pan and inspect it, a small amount of stuff is normal. If the fluid looks like metallic paint or excess metal / contaminents in the pan...trans is failing. Governors don't often just spontaneously stick. On occassion the governor head (where the weights are) becomes loose from the shaft (it's crimped together) this could be a problem. The shaft of the governor should measure .799-.800 they can become undersized. also look at the condition of the case bore. Mostly this wear is caused from ground metal in the fluid as the trans is failing. Modulator won't cause 2nd gear starts. Mod. controls operating pressure and shift points.
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Old 03-05-2012, 06:34 PM
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Quote:
Originally Posted by regguy1
A sticking governor will cause this symptom. The problem is that most often the sticking valve in the governor is a result of ground metal or other debris in the fluid. Remove the pan and inspect it, a small amount of stuff is normal. If the fluid looks like metallic paint or excess metal / contaminents in the pan...trans is failing. Governors don't often just spontaneously stick. On occassion the governor head (where the weights are) becomes loose from the shaft (it's crimped together) this could be a problem. The shaft of the governor should measure .799-.800 they can become undersized. also look at the condition of the case bore. Mostly this wear is caused from ground metal in the fluid as the trans is failing. Modulator won't cause 2nd gear starts. Mod. controls operating pressure and shift points.
Best answer yet. The car sits a lot. Will it benefit me to shift it manually for a while in hopes of freeing something up? Waste of time? Thank you
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Old 03-05-2012, 06:53 PM
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Waste of time, I had a trans shop for 40 years

Check out my Garage tour video (first link)
http://www.garagejournal.com/forum/s...d.php?t=140674
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Old 03-05-2012, 07:14 PM
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Quote:
Originally Posted by regguy1
Waste of time, I had a trans shop for 40 years

Check out my Garage tour video (first link)
http://www.garagejournal.com/forum/s...d.php?t=140674
OK, I'll pull the governor. Thank you
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Old 03-06-2012, 05:40 PM
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Don't forget, if the trans has ground metal you have deeper trouble and the governor will stick again in short order
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