Turbocharger - Idle Dip or Poor Engine Performance
Section:2
Group:
25
No:
114
Date: March 1994
RE: Turbocharger bypass valve
B230FT 1990 -->
Reference:
TP31083/1; Turbochargers B230FT 700 1990
Complaints of severe idle dip after deceleration, or reduced performance may be caused by a damaged diaphragm in the turbo bypass valve.
Testing Procedure:
Pull off vacuum line and apply vacuum to valve to test. Valve should hold vacuum. If not, replace with the following:
Garret:
Bypass Valve Assembly:
1. cover 271459-0
2. diaphragm kit 271801-3
Mitsubishi:
Bypass Valve Assembly:
Valve assembly 271640-5 (up to T/C serial no. 0220000)
Valve assembly 271639-7 (T/C serial no. 0220001-)