[Code of Federal Regulations] [Title 40, Volume 17] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR86.132-90] [Page 511-512] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 86_CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES--Table of Contents Subpart B_Emission Regulations for 1977 and Later Model Year New Light- Sec. 86.132-90 Vehicle preconditioning. (a) The vehicle shall be moved to the test area and the following operations performed: (1) The fuel tank(s) shall be drained through the provided fuel tank(s) drain(s) and filled to the prescribed ``tank fuel volume'' with the specified test fuel, Sec. 86.113. For the above operations the evaporative emission control system shall neither be abnormally purged nor abnormally loaded. (2) Within one hour of being fueled the vehicle shall be placed, either by being driven or pushed, on a dynamometer and operated through one Urban Dynamometer Driving Schedule test procedure, see Sec. 86.115 and appendix I. A test vehicle may not be used to set dynamometer horsepower. (3) For those unusual circumstances where additional preconditioning is desired by the manufacturer, such preconditioning may be allowed with the advance approval of the Administrator. [[Page 512]] (4) The Administrator may also choose to conduct or require the conduct of additional preconditioning to insure that the evaporative emission control system is stabilized in the case of gasoline-fueled and methanol-fueled vehicles, or to insure that the exhaust system is stabilized in the case of petroleum-fueled, natural gas-fueled, liquefied petroleum gas-fueled and methanol-fueled diesel vehicles. (i) Gasoline-fueled and methanol-fueled vehicles. (A) The additional preconditioning shall consist of an initial one hour minimum soak and, one, two, or three driving cycles of the UDDS, as described in (a)(2) of this section, each followed by a soak of at least one hour with engine off, engine compartment cover closed and cooling fan off. (B) The vehicle may be driven off the dynamometer following each UDDS for the soak period. (ii) Petroleum-fueled diesel vehicles, natural gas-fueled and liquefied petroleum gas-fueled vehicles. The preconditioning shall consist of either of the following: (A) The additional preconditioning described in paragraph (a)(4)(i) of this section; or (B) For abnormally treated vehicles, as defined in Sec. 86.085-2, two Highway Fuel Economy Driving Schedules, found in part 600 appendix I, run in immediate succession, with the road load power set at twice the value obtained from Sec. 86.129-80. (b) Within five minutes of completion of preconditioning, the vehicle shall be driven off the dynamometer and parked. The vehicle shall be stored for not less than 12 hours nor for more than 36 hours prior to the cold start exhaust test. (Gasoline-fueled and methanol- fueled vehicles undergo a one-hour diurnal heat build prior to the cold start exhaust test. A wait of up to one hour is permitted between the end of the diurnal heat build and the beginning of the cold start exhaust test. See Sec. 86.130 and Figure B79-5.) (c) Vehicles to be tested for evaporative emissions shall be processed in accordance with procedures in Sec. Sec. 86.133 through 86.138. Vehicles to be tested for exhaust emissions only shall be processed according to Sec. 86.133 through Sec. 86.137. [54 FR 14527, Apr. 11, 1989, as amended at 59 FR 48509, Sept. 21, 1994]