Volkswagen Lupo - Excessively high engine temperature | HELLA
Volkswagen
Lupo
Excessively high engine temperature, engine overheating.
Water pump with plastic impeller.
If there are complaints on the Lupo about the symptoms ·"excessively high engine temperature" or "engine overheating", along with a check on the peripheral components for engine temperature management (thermostat, temperature sensor etc.) the correct function of the water pump is to be checked.
This problem may be caused by a broken impeller (plastic impeller, see figure 2+3) in the water pump.
To check the function of the water pump, remove the cap from the coolant expansion vessel. Then maintain the engine at an engine speed of approx. 2000 rev/min.
Also remove the coolant return pipe from the
coolant expansion vessel (see figure 1.).
If no coolant flow is detected, the water pump is
to be renewed.
Figure 1.
Figure 2.
Figure 3.
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
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