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TH400 question: slow movement when cold?

Old Dec 18, 2024 | 09:24 AM
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Question TH400 question: slow movement when cold?

i recently swapped from 4L60E to a TH400 with RMVB and transbrake. i noticed on a cold start and ambient temps lower than 40*F that the car barely moves on its own at idle in gear. even shifting between gears theres virutally no feeling of engagement. i didnt want to apply too much throttle if it'd cause burning clutches and all. is this typically normal with the TH400?
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Old Dec 18, 2024 | 05:32 PM
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Originally Posted by fst100
i recently swapped from 4L60E to a TH400 with RMVB and transbrake. i noticed on a cold start and ambient temps lower than 40*F that the car barely moves on its own at idle in gear. even shifting between gears theres virutally no feeling of engagement. i didnt want to apply too much throttle if it'd cause burning clutches and all. is this typically normal with the TH400?
How much fluid is in the trans?? Kind of sounds like the T brake isn't fully releasing. I probs wouldn't drive it at all until I got to the bottom of it
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Old Dec 19, 2024 | 06:15 PM
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probably ought to put a 0-300 pressure gauge on the line pressure port in the case and see whats really going on
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