Omega B
Engine - Excessive coolant temperature
Models: Vectra-B 96..., Omega-B 94...
Engines: 2.5l, 3.0l
Option: X25XE, X30XE Motronic
Group: J - Engine
Troublecode: Non
Complaint: Poor Engine Driveability Excessive coolant temp. (upto 125 °C in Tech I) with high engine load and motor speeds above 4000 rpm.
Cause: Thermostat activation capsule not seated correctly not allowing thermostat to fully open.
Special part: No
Production Solution:
Remedy: Replace thermostat.
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