Fuel System - Engine Sag On Acceleration

89chrysler11

Models

1986-1987 L-Body Vehicles Federal and High Altitude Emissions


Subject


Sag on Acceleration


Index

DRIVEABILITY


Date

September 5, 1989

No.

18-09-89 REVISION A


P-3277 (C18-01-9)

BODY CODE LEGEND

L - OMNI/HORIZON


THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN # 18-09-89 (DATED 7/31/89) WHICH SHOULD BE REMOVED FROM YOUR FILES.

NOTE: THIS BULLETIN ONLY APPLIES TO 2.2L FEDERAL AND HIGH ALTITUDE CARBURETED VEHICLES.

SYMPTOM/CONDITION

Sag on acceleration during part throttle tip in from a stop. Reoccurs during hot soaks and warm drives in high ambient temperatures.

DIAGNOSIS

While symptom exists, disconnect and block purge. If problem goes away, continue with procedure.

PARTS REQUIRED

Driveability Package, PN 4419458

Consists of:

1 Pressure Relief/Rollover Valve PN 4495047
1 Rollover Valve Grommet PN 4002149
1 3/16" x 3/16" In-Line Connector PN 4104998
1 3/16" Vacuum Tee Connector PN 4104172
1 3/16" Rubber Cap PN 3580171
2 Tie Wraps PN 6015756
1 Authorized Modification Label PN 4275086

Must be Ordered Separately, Service in Bulk:

1 20" x 3/16" Rubber Vacuum Hose
(Hose Available in 25' Roll) PN 4026511

FIGURE 1:

REPAIR PROCEDURE

This repair procedure involves rerouting the (VCOTVV) Vacuum Controlled Orificed Tank Vapor Valve to ported vacuum from manifold vacuum, and installing a pressure relief/rollover valve.

1. Cut two pieces of 3/16" vacuum hose (Bulk PN 3751863) into the following lengths: one piece 18" long; one piece 2" long.

2. Attach the 2" and 18" pieces of 3/16" vacuum tubing to each end of the 3/16" vacuum tee.

3. Remove the vacuum line from the purge solenoid. Attach the open end of the 2" piece of vacuum hose to the purge solenoid.

4. Attach the removed purge solenoid vacuum line to the remaining end of the vacuum tee (See Figure 1 - Part A).

PLEASE NOTE: REMOVING THE HORN WILL MAKE THE VCOTVV EASILY ACCESSIBLE AND ALLOW ROOM TO COMPLETE THIS PROCEDURE.

5. Remove the 3/16" vacuum line from the signal port of the VCOTVV. Plug this line using the 3/16" in-line connector and the 3/16" rubber cap as shown in Figure 1 - Part B.

6. Attach the open end of the 18" x 3/16" vacuum hose (from the tee) to the signal port of the VCOTVV.

7. Use the supplied tie wraps, PN 6015756, to attach the modified vacuum lines.

8. Reinstall horn at this time, if removed.

9. Remove the original rollover valve as outlined in the service manual and replace with revised rollover valve PN 4495047.

FIGURE 2:

10. Type information on Authorized Modification Label, PN 4275086, as shown in Figure 2 and attach near VECI label.


POLICY: Reimbursable within the provisions of the warranty.

TIME ALLOWANCE
Labor Operation No. 14-60-01-90 . . . . . . . . . . 1.0 Hrs.


FAILURE CODE: AM - Authorized Modification