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Help with rebuilt C4

1907 Views 13 Replies 7 Participants Last post by  chipmechanic

I have owned and driven as my primary vehicle a 77 Bronco since 1980. During that time I have rebuilt or replaced many engine, drive train and body parts. When my transmission died recently, I purchased a rebuilt C4 and converter. The installation went as expected but when I put it gear the first time... nothing happened. There is no indication that the transmission is engaging in any gear. With the engine running I can hear a clicking or rattling sound under the bell housing.

Before installation I flushed the cooling lines, primed the converter with 2qts of ATF, and the vacuum modulator seems to be working.

I suspect perhaps the wrong input shaft for the converter? or maybe a bad torque converter?

Any ideas?

1 - 2 of 14 Posts
I would pull the trans and put input shaft in converter and see if splines match.
Unfortunately if you didn't have the converter seated when you started the motor you're going need a pump and converter.
You should go through the unit. It's critical that no metal be in it. Bill
1 - 2 of 14 Posts
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