Thread: Car banging and clunking when it shifts up or down
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Old 05-23-2015, 02:34 AM
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Diesel911 Diesel911 is offline
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I don't know if this was mentioned previously.

I inadvertently disconnected the Vacuum Line to the Transmission Modulator and the up shifts were nearly the same but the down shifts were extremely harsh.

People have had the Trans Modulator Cap Crack or fall off.

I am not sure if a bad Trans Modulator would have the same symptoms you mentioned.
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