CHEVROLET MONTE CARLO INSTRUMENT CLUSTER GAUGES TACHOMETER

Have A 2001 Chevy Monte Carlo. After Driving For 5 Minutes, When Accelerating, Teh Tachometer Drops In Rpm. Car Still Runs, No Warning...

I Changed To A Hei Distributor And My Old Tach, Made For Point Ignition Died When I First Reved Up To 5000 Rpm. I Think Too Much Voltage On...

About 5-10 Minutes After The Car Is Started And Is Running Normal City Driving (35-45 Mph), When Hitting Teh Gas To Accelerate, The Rpm's...