Engine - Slow Acceleration/Bucking on Deceleration
83chrysler7 Models1982 & 1983 1.7L Omni, Horizon 2- Dr.. & 4-Dr. Models - Auto. & Manual Transmissions With Federal or California Emission systems
Subject
Driveability Improvement & Flat Acceleration After Slowing Down & Bucking During Deceleration
Index
FUEL
Date
March 28, 1983
No.
14-10-83
SYMPTOM/CONDITION
This service procedure resolves two driveability problems outlined below.
The first driveability condition is flat and slow acceleration after slowing down for a few seconds. This symptom is known as "lean ramping". The second condition is a bucking or jerking motion during closed throttle deceleration or partially closed throttle deceleration.
PARTS REQUIRED
Order See
Model Orig. Replace. Note
Year Market Trans. ESA/EFC ESA/EFC Below
1982 Federal Manual 5213438 4318113 (1)
1982 Federal Auto. 5213437 5213890 -
1983 Fed. & Manual 5213438 4318113 (1)
Calif.
NOTE (1): Replacing this part number module will change the basic timing specification from 20~ BTDC to 12~ BTDC. Reset basic timing to 12~ BTDC with the vacuum hose to the ESA/EFC disconnected and plugged.
Must be ordered separately:
1 - Authorized Modification Label PN 4275086
REPAIR PROCEDURE
1. Remove original ESA/EFC module and install appropriate module from model application chart above.
2. After installation of replacement ESA/EFC module on 1982 automatic transmission models it will be necessary to check and reset basic timing per the adjustment chart below if required.
1982 1.7L Automatic Transmission Federal Emission System With ESA/EFC PN 5213890
Check and reset basic timing, if necessary, per original VECI label specification.
1982 1.7L Manual Transmission Federal Emission System With ESA/EFC PN 5213892
Reset basic timing to 120 BTDC. Reset curb idle speed and hot fast idle speed to original VECI label specifications (see Note on page 1).
1983 1.7L Manual Transmission Federal and California Emission System With ESA/EFC PN 5213892
Reset basic timing to 12~ BTDC. Reset curb idle and hot fast idle RPM per original VECI label specification (see Note on page 1).
FIGURE 1:
3. Type the following information on Authorized Modification Label PN 4275086 (Figure 1).
Top section - "Replaced ESA/EFC With PN (use respective part number from parts list).
If basic timing change is required type in the following information.
"Revised basic timing to 12~ BTDC."
Lower Section
Change Authority - TSB 14-10-83
Dealer Code - your dealer code.
Date - date this service is performed.
4. Install Authorized Modification Label near or next to original VECI label.
NOTE: This bulletin is released in advance of parts availability. The parts listed in this bulletin will be available in midApril, 1983.
POLICY: Reimbursable within the provisions of the warranty.
PASSENGER CAR LABOR OPERATION TIME SCHEDULE:
TIME ALLOWANCE:
Labor Operation No. 08-14-05-93 . . . . . . . 0.4 Hrs.
FAILURE CODE: RO - Driveability