Are you trying to connect your range to a 3-wire source, using a 4-wire cord? I'm a little confused on your symptoms. Normally you have a 2 HOT leads and a NEUTRAL/GROUND (3-wire) in older homes. In newer homes you have 2 HOT leads, a separate NEUTRAL and a separate GROUND (4-wire).
The following link explains the difference between the two configurations and how they should be correctly wired:
http://www.fixya.com/support/r3575913-installing_a_220_vac_appliance_cord
New construction homes built after the year 2000 REQUIRE the use of a 4-wire plug and are usually readily wired at the receptacle to accommodate. If your existing receptacle already has a 3-wire configuration you do not need to re-wire it, however. The easiest solution would be to purchase a 3-wire power cord that matches the receptacle you have.
Read through the link provided and post back and let me know if you have any questions. I hope this helps you solve your problem.
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