Metro L3-61 1.0L (1990)
Exhaust Gas Recycle (EGR) Modulator: Technical Service Bulletins
EGR Pressure Transducer (Modular) Check Revised
File in Section: 6E - Engine Fuel & Emission
Bulletin No.: 41-65-35
Date: January, 1995
SERVICE MANUAL UPDATE
Subject:
6E2-C7 - Driveability and Emissions - Exhaust Gas Recirculation (EGR) Pressure Transducer (Modulator) Check
Models:
1989-94 GEO Metro with 1.0L Engine (VIN 6)
The following procedure replaces the one originally published in the Service Manual.
Exhaust Gas Recirculation (EGR) Pressure Transducer (Modulator) Check
1.
Remove three vacuum hoses from the Exhaust Gas Recirculation (EGR) Pressure Transducer (modulator).
2.
Place finger over EGR Pressure Transducer tube and blow into opposite tube, see Figure 1 (picture in Service Manual did not change). Air should
pass through filter part of Pressure Transducer.
3.
Connect vacuum pump to tube "P" and plug tube "Q" with your finger. see Figure 2 (picture in Service Manual did not change).
4.
Blow air into tube "A" while applying vacuum to tube "P" at the same time. You should be able to obtain vacuum on the vacuum pump gauge.
5.
Stop blowing air into tube "A" and vacuum pump gage should indicate zero.
If EGR Pressure Transducer fails either test. replace the EGR Pressure Transducer.
