Hello together,
I am experiencing a problem with the turbo hydramatic 400 automatic transmission in my car. (1970 LS5 Corvette).
Whenever I shift from P to reverse or from reverse to 3 I notice a jolt. It's like a punch and you can really feel it.
Could this be the modulator of the transmission? However, the car shifts nicely when I drive it. This is only when I do not move and put the tranny in reverse. Idle speed is at 550 RPM.
Before I order any parts I would like to ask you for advice, what could cause this problem? Transmission had been rebuilt some years ago. Maybe somebody has had the same issue?
Any help is really appreciated.
Thank you
Best regards from Switzerland
Ruedi
I am experiencing a problem with the turbo hydramatic 400 automatic transmission in my car. (1970 LS5 Corvette).
Whenever I shift from P to reverse or from reverse to 3 I notice a jolt. It's like a punch and you can really feel it.
Could this be the modulator of the transmission? However, the car shifts nicely when I drive it. This is only when I do not move and put the tranny in reverse. Idle speed is at 550 RPM.
Before I order any parts I would like to ask you for advice, what could cause this problem? Transmission had been rebuilt some years ago. Maybe somebody has had the same issue?
Any help is really appreciated.
Thank you
Best regards from Switzerland
Ruedi
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