Posted by NJVolvoguy on August 17, 2002 at 23:54:31:

In Reply to: 1989 740 Turbo Starting Problems posted by Greg on August 13, 2002 at 23:23:08:

Check the hall effect sensor on the distributor. (on the back of the head, in the 6:00 position ) This sensor sends a signal to the ignition. Sometimes the sensor gets heat soaked and fails, causing the exact problem you describe. When you try and start, does the tach move at all? even at the slow speeds the starter turns the motor over, the tach should at least bump off it's stop. If not, there isn't any signal being sent to the computer to tell the ignition to fire.

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