Throttle Position Sensor - Diagnostic Tips
Article No. 85-20-11SELF-TEST CODE 53 - EEC IV - THROTTLE POSITION SENSOR DIAGNOSTIC TIP
FORD
1985-86 ESCORT, EXP, TEMPO, MUSTANG, LTD, THUNDERBIRD
LINCOLN-MERCURY 1985-86 LYNX, TOPAZ, CAPRI, MARQUIS, COUGAR
LIGHT TRUCK 1985-86 RANGER, BRONCO II, ECONOLINE, F-SERIES
CALIBRATION: All with EEC IV
WARNING: This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and could create liability under applicable federal or local laws.
A new design Throttle Position Sensor (TPS) has been released for all 1986 EEC IV applications. The new TPS is designed to eliminate a false Self-Test Code 53. A Code 53 indicates the TPS system has failed at the wide open throttle position (approximately 5.0 volts), The new TPS eliminates false Code 53 by limiting the wide open throttle voltage to 4.75 volts. With the new TPS, Code 53 will only result from a circuit or TPS malfunction.
The new Throttle Position Sensors can be used to replace faulty sensors on 1985 vehicles. If the old design service part is used, a false Code 53 may result.
PART NUMBER PART NAME CLASS
E6DZ-9B989-A Throttle Position Sensor C
E6TZ-9B989-C Throttle Position Sensor WC
E6DZ-9B989-C Throttle Position Sensor WC
E6FZ-9B989-A Throttle Position Sensor B
E6ZZ-9B989-A Throttle Position Sensor B
E6ZZ-9B989-B Throttle Position Sensor WC
E6TZ-9B989-A Throttle Position Sensor C
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"