Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 10, 1997.
As of Monday, July 22nd, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
E-150 Kit1997 Ford E-150 Econoline Incomplete Van 7000 lb. GVWR equipped with a RV Prep. Package , P235/ 75Rx15XL tires, and 4.2L/ 4.6L/ 5.4L engine. 1997 Ford E-150 Regular Club Wagon equipped with P235/75Rx15XL tires, and 4.2L 4.6L/ 5.4L engine.Vehicles must be equipped with Ford standard contoured rear bumpers or Ford optional step bumpers only (the aft-of-axle fuel tank kits are not compatible with aftermarket step or other style bumpers). In addition, the above vehicles must not be equipped with Ford auxiliary rear air conditioning/ heating systems (the auxiliary system must be discarded before the aft-of-axle fuel tank kits can be installed).

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-431
  • Executive Order 431 / D431
  • ARB # D-431
  • Executive Order No: D-431
  • C.A.R.B. No. D-431
  • Resolution D-431
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-431 PDF

D-431 Document:



                                                               (Page 1 of 2)
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                                         State of California
                                         AIR RESOURCES    BOARD

                                        EXECUTIVE ORDER D—431
                             Relating to Exemptions Under Section 27156
                                         of the Vehicle Code

                                          FORD MOTOR COMPANY
                                 ECONOLINE AFT—OF—AXLE FUEL TANK KITS


          Pursuant to the authority vested in the Air Resources Board        (ARB)   by Section
          27156 of the Vehicle Code; and

          Pursuant to the authority vested in the undersigned by Sections 39515 and
          39516 of the Health and Safety Code and Executive Order G—45—9;

          IT IS ORDERED AND RESOLVED:    That the installation of the Econoline
          Aft—of—Axle Fuel Tank Kits (Econoline Kits)}), manufactured by Ford Motor
          Company of P.O. Box 1899, Room 272 WHQ, Dearborn, Michigan 48121—1899, has
          been found not to reduce the effectiveness of the applicable vehicle pollution
          control system,   and therefore,   the Econoline Kits are exempt     from the
          prohibitions of Section 27156 of the California Vehicle Code for installation
          on the following 1997 model—year Ford Motor Company      (Ford)   4.2/4.6/5.4 liter
          vehicles:


                 Econoline Kit       Vehicle Application

                 E—150 Kit           E—150 Econoline Incomplete Van
                                     7,000 1lb. GVWR equipped with an RV Prep.       Package and
                                     P235/75Rx15XL tires

                                     E—150 Regular Club Wagon equipped with
                                     P235/75Rx15XL tires

                 E—250 Kit           E—250 Incomplete Reqgular and Super Econoline Vans
                                     7,500 1b. GVWR equipped with an RV Prep. Package and
                                     LT225/7SRx16D tires

                                     E—250 Incomplete Heavy—Duty Regular and Super
                                     Econoline Vans
                                     8,600 lb. GVWR equipped with an RV Prep. Package and
                                     either the LT225/75Rx16E tires or the LT245/75Rx16E
                                     tires

                 Note:               The above vehicles    must be equipped with Ford
                                     standard contoured    rear bumpers or Ford optional
                                     step bumpers only    (the aft—of—axle fuel tank kits
                                     are not compatible    with aftermarket step or other
                                     style bumpers).     In addition,   the above vehicles
                                     must not be equipped with Ford auxiliary rear air
                                     conditioning/heating systems (the auxiliary system
                                     must be discarded before the aft—of—axle fuel tank
                                     kits can be installed).


          This Executive Order is valid provided that installation instructions for the
   Pss




          Econoline Kits not recommend tuning the vehicles to specifications different
          from those submitted by the vehicle manufacturer.


FORD MOTOR COMPANY                                  EXECUTIVE ORDER D—431
ECONOLINE AFT—OF—AXLE                               {Page 2 of 2)
FUEL TANK KITS


Changes made to the design or operating conditions of the Econoline Kits,     as
exempt by the ARB, which may adversely affect the performance of a vehicle‘s
pollution control system, shall invalidate this Executive Order.

Marketing of the Econoline Kits using an identification other than that shown
in this Executive Order or for an application other than those listed in this
Executive Order shall be prohibited unless prior approval is obtained from the
ARB.   Exemption of the Econoline Kits shall not be construed as an exemption
to sell,   offer for sale,   or advertise any components of the Econoline Kits as
individual devices.

This Executive Order does not constitute any opinion as to the effect the use
of the Econoline Kits may have on any warranty either expressed or implied by
the vehicle manufacturer.

No claim of any kind, such as "Approved by the Air Resources Board," may be
made with respect to the action taken herein in any advertising or other oral
or written communication.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF ANY
CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED
BENEFITS OF FORD MOTOR COMPANY‘S ECONOLINE AFT—OF—AXLE FUEL TANK KITS.

Violation of any of the above conditions shall be grounds for revocation of
this Executive Order.  The Executive Order may be revoked only after a ten—day
written notice of intention to revoke the Executive Order, in which period the
holder of the Executive Order may request in writing a hearing to contest the
proposed revocation.  If a hearing is requested, it shall be held within ten
days of receipt of the request and the Executive Order may not be revoked
until a determination after the hearing that gifunds for revocation exist.

Executed at El Monte,   California,   this   Afi   day o   ne 1997.


                              State of California
Luien.




                              AIR RESOURCES    BOARD




                        EVALUATION OF FORD MOTOR COMPANY‘S
                       ECONOLINE AFT—OF—AXLE FUEL TANK KITS
               FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
         sECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE
                          CALIFORNIA CODE OF REGULATIONS




                                   June 1997


                                   State of California
ww




                                  AIR RESOURCES   BOARD




                           EVALUATION OF FORD MOTOR COMPANY‘S
                          ECONOLINE AFT—OF—AXLE FUEL TANK KITS
                   FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
             SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE
                             CALIFORNIA CODE OF REGULATIONS




                                           by
                           Mobile Source Operations Division

                                  State of California
                                  Air Resources Board
                                  9528 Telstar Avenue
                                El Monte, CA 91731—2990




     (This report has been reviewed by the staff of the California Air Resources
     Board and approved for publication.  Approval does not signify that the
     contents necessarily reflect the views and policies of the Air Resources Board
     nor does the mention of trade names or commercial products constitute
     endorsement or recommendation for use.)


                                      SUMMARY


             Ford Motor Company of P.0O. Box 1899, Room 272 WHQ, Dearborn,

Michigan 48121—1899 has applied for an exemption from the prohibitions of

Section 27156 of the California Vehicle Code for their Econoline Aft—of—Axle

Fuel Tank Kits.     The aft—of—axle fuel tank kits have been designed to replace

the original midship fuel tanks used on 1997 model—year Ford Motor Company

§.2/4.6/5.4 liter E—150 and E—250 vehicles.

             Based on test data and engineering evaluation of the aft—of—axle

fuel tank kits,   the staff concludes that Ford Motor Company‘s Econoline

Aft—of—Axle Fuel Tank Kits will not adversely affect the exhaust or

evaporative emissions or the on—board diagnostic monitoring systems of the

vehicles for which the exemption is requested.     This vehicle application

includes those vehicles that have been certified to enhanced evaporative

emission standards and equipped with on—board evaporative system leak

detection system.

             Staff recommends that Ford Motor Company be granted an exemption

for their Econoline Aft—of—Axle Fuel Tank Kits for installation on 1997

model—year 4.2/4.6/5.4 liter E—150 and E—250 vehicles,    including those

vehicles that have been certified to enhanced evaporative emission standards

and equipped with on—board evaporative system leak detection system,    and that

Executive Order No.    D—431 be issued.


                                      CcOoNTENTS


                                                    Page Number


     SUMMARY

     CcONTENTS                                            1i

     I.          INTRODUCTION

     II.         conNCLUSION

     III.        RECOMMENDATION

     IV.         DEVICE DESCRIPTION AND OPERATION

     v.          DEVICE EVALUATION AND DISCUSSION
A=




                                          ii


                                  State of California
                                  AIR RESOURCES   BOARD




                      EVALUATION OF FORD MOTOR COMPANY‘S
                     ECONOLINE AFT—OF—AXLE FUEL TANK KITS
              FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
        sECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE
                         CALIFORNIA CODE OF REGULATIONS




;.              INTRODUCTION

                Ford Motor Company   (Ford)   of P.O.   Box 1899,   Room 272 WHQ,

bearborn, Michigan 48121—1899 has applied for an exemption from the

prohibitions of Section 27156 of the California Vehicle Code for their

Econoline Aft—of—Axle Fuel Tank Kits (Econoline Kits)          for installation on 1997

model—year Ford 4.2/4.6/5.4 liter E—150 and EB—250 vehicles.           Ford has

submitted all the required information including drawings and installation

instructions for their Econoline Kits.        Ford has also submitted evaporative

emissions and on—board diagnostic      (OBD II)   system test data for evaluation.




II.             CcONCLUSION

                Based on the test data submitted by Ford and enginsering

evaluation of the Econoline Kits,     staff concludes that Ford‘s Econoline Kits

will not adversely affect the exhaust or evaporative emissions or the OBD II

monitoring systems of the 1997 model—year 4.2/4.6/5.4 liter Ford E—150 and E—

250 vehicles.




III.            RECOMMENDATION

                Staff recommends that Ford be granted an exemption as requested,

permitting advertisement,      sale and installation of their Econoline Aft—of—Axle

Fuel Tafik Kits on 1997 model—year 4.2/4.6/5.4 liter E—150 and E—250 vehicles,

and that Executive Order No.     D—431 be issued.


IV.            DEVICE DESCRIPTION_AND OPERATION

               The aft—of—axle fuel tank kits have been designed by Ford to

facilitate replacement of original equipment manufacturer        (OEM)   fuel tanks on

1997 model—year Ford 4.2/4.6/5.4 liter E—150 and E—250 vehicles.            The kit

consists of a steel fuel tank,     fuel pump/sender,   fuel supply/return lines,

fuel tank vapor lines,   and other fasteners and connectors.       The replacement

fuel tank has a nominal capacity of 30.5 gallons and replaces the 35—gallon

OEM midship steel fuel tank.     The relocation is allowed by utilizing longer

fuel supply/return lines and extension of the fuel tank vapor lines.              One

rollover valve on the replacement fuel tank meters the vapor flow from the

tank to the emission canister.      The emission canister is moved forward,

approximately 18 inches,   from aft axle location to accommodate the fuel tank.

Depending on the vehicle application,     there are differences    in the kit

components and the required modifications:      the E—150 Kit for E—150 Regular

Club Wagons includes shock absorbers,     spacers,   and other hardware for mounting

the fuel tank; the 5.4 liter vehicles with 2.75—inch diameter exhaust pipes

require removal   (by cutting)   of 1 inch of the exhaust pipe;    and different

templates are available for installing the crossmembers needed for mounting

the fuel tanks.   All other OEM exhaust and evaporative emission control

systems are retained without modification.



v.             DEVICE EVALUATION AND DISCUSSION

               The vehicles for which Ford is requesting exemption have been

certified to meet the enhanced evaporative emission standards.            Staff

conducted an engineering evaluation to determine the emissions impact of the

aft—of—axle replacement fuel tanks on the applicable vehicles.

           |   The replacement fuel tank has a nominal tank capacity of 30.5

gallons and a vapor space volume of 9 gallons.         In comparison,    the OEM tank

has a capacity of 34.9 gallons and a vapor space volume of 9.2 gallons.                 The

change to smaller volumes of liquid and vapor spaces will result in lower


    evaporative emissions from the fuel tank during hot soak and with diurnal

    cycles.

                    With the relocation of the fuel tank from midship to aft axle,

    the replacement fuel tank is farther away from the underbody catalyst and the

    heat—generating portions of the exhaust system.         This will result in a cooler

    or lower fuel tank temperature profile      (FTTP)   during vehicle operation.

    However,    the return fuel system used in the 4.2/4.6/5.4 liter E—150 and E—250

    vehicles will cause an increase in the FTTP for a smaller capacity fuel tank.

    Ford did not conduct testing with the 30.5 gallon replacement fuel tank to

    quantify this increase but did conclude, based on previous testing conducted

    on other vehicles with various tank capacities, that this increase in FTTP

    will be entirely offset by the decrease resulting from the relocation of the

    fuel tank to a cooler location.      Therefore,    the FTTP of the replacement fuel

    tank will be very close to the FTTP of the OEM tank and will not cause any

    increase in running loss evaporative emissions.

                    The vehicles for which the aft—of—axle fuel tank kits have been
l




    designed are equipped with OBD II leak detection monitoring system.         This

    system has been certified to detect 0.04" and larger orifice leaks throughout

    the evaporative system.       Ford conducted testing on a 4.6 liter E—250 van with

    the 30.5—gallon replacement fuel tank to ensure that it does not trigger faise

    malfunction indicator lights (MILs) or disable the leak detection system.           A

    0.02" and a —0.04" orifice leaks were induced at the service port       (between the

    purge valve and emission canister) and at the filler neck.         The vehicle‘s OBD

    II system did not detect the 0.02" leak at either the service port or the

    filler neck;    therefore,   there is no risk of false MILs.    The system did detect

    the 0.04"    leak at the filler neck;   however,   it did not detect the 0.04"   leak

    at the service port.     Ford concluded that the system‘s inability to detect the

    0.04" leak at the service port may be attributable to the change from using

    two rollover valves in the OEM fuel tank to one rollover valve in the

    replacement fuel tank.       Ford determined through additional testing that the

    system was able to detect a 0.06" orifice leak and requested that they be


         allowed to monitor 0.06"   and larger leaks near the service port.   Advanced
am0es.




         Engineering Section of the Air Resources Board granted Ford a waiver from the

         0.04" leak monitoring requirement in the service port area for the replacement

         fuel tank.

                      Based on the above,   staff concludes that the evaporative

         emissions and the OBD II leak detection systems of the vehicles for which the

         exemption is requested will not be affected by the installation of the aft—of—

         axle fuel tank kits.



Document Created: 2005-09-01 12:14:44
Document Modified: 2005-09-01 12:14:44

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