EXHIBIT 23.1

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

     We consent to the incorporation by reference in (a) the Registration
Statement (Form S-3, No. 33-56610) pertaining to shares of common stock of IMPCO
Technologies, Inc. and in the related Prospectus, (b) the Registration Statement
(Form S-8, No. 33-38649) pertaining to the 1989 Incentive Stock Option Plan of
IMPCO Technologies, Inc. and in the related Prospectus, (c) the Registration
Statement (Form S-8, No. 33-72008) pertaining to the 1991 Executive Stock Option
Plan of IMPCO Technologies, Inc. and in the related Prospectus, (d) the
Registration Statement (Form S-8, No. 33-37035) pertaining to the 1996 Incentive
Stock Option Plan of IMPCO Technologies, Inc., (e) the Registration Statement
(Form S-8, No. 33-62889) pertaining to the IMPCO Investment and Tax Savings
Plan, (f) the Registration Statement (Form S-8, No. 333-44085) pertaining to the
1997 Incentive Stock Option Plan of IMPCO Technologies, Inc. and in the related
Prospectus, (g) the Registration Statement (Form S-8, No. 333-71544) pertaining
to the 2000 Incentive Stock Option Plan of IMPCO Technologies, Inc. and in the
related Prospectus, (h) the Registration Statement (Form S-3, No. 333-82110)
pertaining to shares of common stock of IMPCO Technologies, Inc. and in the
related Prospectus, and (i) the Registration Statement (Form S-3, No. 333-88690)
pertaining to shares of common stock of IMPCO Technologies, Inc. and in the
related Prospectus of our report dated July 18, 2002, except for the 3rd
paragraph of Note 1 and Note 13 as to which the date is July 23, 2002 with
respect to the consolidated financial statements and financial statement
schedule of IMPCO Technologies, Inc. included in this Annual Report (Form 10-K)
for the year ended April 30, 2002.


                                               /s/ Ernst & Young LLP

Long Beach, California
July 25, 2002