RX7 2RTR- 1308cc 1.3L FI (1987)
Air Flow Meter/Sensor: All Technical Service Bulletins
Engine - Surge or Stumble During Acceleration
Category Applicable Model/s
Subject
Bulletin No. 042/88
4
1986-87 RX-7
SURGE OR STUMBLE
Issued
2/11/88
DURING ACCELERATION
Revised
DESCRIPTION
If you encounter a 1986-87 RX-7 vehicle with a surge or stumble during acceleration at more than 2500 rpm, this may be due to an improper ground
between the emission control unit and the air flow meter. Test for the symptom according to the procedure shown in this Service Bulletin. (Refer to
Service Bulletin Category 4, No. 036/87.)
The ground circuit of the emission control unit has been improved since November 1, 1986.
VIN OF PRODUCTION CHANGE
CHECKING PROCEDURE
Use an ohmmeter to check the resistance between the 2C terminal of the emission control unit and the boost sensor/(pressure sensor) ground terminal
(BrB). If the resistance is not 0, proceed to the next step.
