1991 Lexus LS 400

Computer problem
1991 Lexus LS 400 V8 Two Wheel Drive Automatic 272500 miles

Erratic stalling where depressing accelerator does nothing for 4-5 seconds followed by a surge for 1-2 seconds. Problem has been diagnosed as the reduction of voltage from 12 to 9 VC going to fuel pump when car is idling. Specifically, the compuer module that signals the resistor to reduce voltage to fuel pump when car is idling has been by-passed. This allows the fuel pump to always operate with 12 VDC. Does this represent any type of safety issue? I would like to keep this fix instead of replacing a $1000 computer module. Thanks for your help.
June 14, 2008.

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