Vacuum module

[hotrod351]

i dont know why but it seems that im going through a lot of vacuum modules, they c4 tranny went through one a couple years before having it rebuilt and now its gone through another one. what happens is that the motor starts sucking tranny fluid through the vacuum line from the back of the module into the engine and im constantly adding fluid. then i change the module and it stops for 9 or 10 months and starts again.

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[my77stang]

Buy a different brand module, damn thing is probably made in China.

[hotrod351]

i looked on checkers site and it ask = Transmission Modulator: C4, C6 Transmissions With White Stripe, and they have one with Blue Stripe, the first and second time i replaced it i just went and asked for a vacuum modulator for a 70 mustang with a c4 tranny.

[hotrod351]

how do i find out which tranny vacuum module i need, the one with blue stripe to or the one with the white stripe.