Exhibit 32.1

CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
(SUBSECTIONS (a) AND (b) OF SECTION 1350, CHAPTER 63 OF TITLE 18,
UNITED STATES CODE)

In connection with the Quarterly Report of Del Taco Income Properties IV (the “Company”) on Form 10-Q for the period ended June 30, 2004 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

     (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

     (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	August 13, 2004	/s/ Kevin K. Moriarty
		Kevin K. Moriarty
		Director, Chairman and
		Chief Executive Officer
Date:	August 13, 2004	/s/ Robert J. Terrano
		Robert J. Terrano
		Executive Vice President,
		Chief Financial Officer