EXP L4-098 1.6L VIN 2 2-bbl (1983)
Air Flow Meter/Sensor: All Technical Service Bulletins
Vane Air Meter - Hesitation/Detonation/Backfires
Article No. 84-14-20
STALL/HESITATION - COLD; HESITATION/DETONATION/BACKFIRES - WARM; 1.6L EFI/ 1.6L EFI TURBO/2.3L, EFI TURBO/2.3L
TURBO SVO
FORD 1983-84 ESCORT, EXP, MUSTANG, SVO, T-BIRD
LINCOLN-MERCURY 1983-84 LYNX, LN7, CAPRI, COUGAR
Figure 21
The above symptoms may be caused by contaminated Vane Air Meters. Some meters built between July (347 Code Date) and October (350 Code Date)
1983 might have a silver sulfide contamination of the contact point and wiper assembly (See Figure 21 for Date Code location).
Diagnose for this condition using the following procedures:
1.
Perform EEC IV Self Test, possible codes are 24 and 66.
NOTE:
Codes may or may not appear!
2.
Disconnect the vane meter EEC harness connector from the sensor.
3.
Connect a DVOM (2000 ohm scale) to pin 6 (circuit 46, sig. return) and pin 7 (circuit 43, VAF).
4.
Reading should be between 26 and 200 ohms; if not, replace meter. If ok, proceed to Step 5.
5.
Then move the vane meter door wide open and let it close.
6.
Take a second ohm meter reading. If the second reading is not within +/- 20 ohms of the first reading, the vane meter is contaminated; replace it.
NOTE:
If vane meter passes this test, it is "OK". Look for problem elsewhere.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP12529A84
TIME:
0.6 Hr. - 1.6L EFI 0.7 Hr. - 1.6L EFI T/C 0.7 Hr. - 2.3L EFI T/C DLR. CODING: Basic Part No. 12B529 Code: 09
