Water Pump for auto

Heater/Cooling System auto parts: Water Pump

How to determine the auxiliary water pump failure

Diagnosis of the component begins with its inspection. Fluid stains on the part surface indicate that integrity of the housing or the seal is impaired.

Then start the engine, switch the heater on to the maximum temperature and listen if the pump started operating. If it does not switch on, use a multimeter or a test bulb to check whether the power cable is serviceable.

The pump must be disassembled for a more comprehensive examination. Corrosion of metal components indicates that the part requires replacement.

You may identify that an auxiliary water pump has to be inspected, by the following symptoms:

  • the auxiliary heater turns off prematurely;
  • the engine does not warm up well at idle speed (relevant for diesel power units);
  • too low temperature in the passenger compartment when the heater is on;
  • the on-board computer signals an error;
  • frequent overheating of the engine;
  • the coolant level has decreased.

Causes of the auxiliary water pump failure

The most common pump failure is wear of the electric motor contact brushes. Eventually they wear out, and when the power is supplied the motor of the component does not activate. Typically, the need to replace the brushes arises after 100,000 operational kilometers.

The part’s exposure to moisture and dirt may lead to corrosion of the housing and oxidation of contacts. Besides, the pump shaft may rust in the case of a prolonged vehicle non-use. The shaft jamming can also result from the ingress of a foreign object between the impeller blades.

The coolant leakage from the drain hole or from the pump mounting seat is usually a result of the end seal wear. Premature seal destruction can occur due to usage of a contaminated fluid or the pump turning on with a lack of it. Usage of an unsuitable fluid or mixing of fluids different in composition are also hazardous for the unit components. Besides, neglecting the antifreeze replacement intervals may lead to clogging of the pump lines.

If the component continuously operates under high stress, the risk of turn-to-turn short circuit in its winding is considerably higher.


Repair and replacement of the auxiliary water pump

Generally, the repair of the auxiliary coolant recirculation pump is not expedient, but in some cases the problem can be solved by replacing the brushes or cleaning the parts.

The part removing and installing procedures usually do not involve any difficulties. Before starting the replacement, you need to drain the fluid from the cooling system. Then, loosen the clamps, remove the hoses from the pump connectors, and pull out the wire harness connector. You need to clean the pump mounting seat from dirt and corrosion, and then install a new pump after replacing the seal. After that, you can reconnect the hoses and the wire harness connector to it, and also refill the antifreeze in the cooling system.

To check the part serviceability, start the engine, warm it up, and then switch on the auxiliary pump. If the component is operable and correctly connected, you will hear a characteristic buzzing noise.

Popular Water Pump manufacturers
Original Water Pump from VALEO producer Original Water Pump from CONTITECH producer Original Water Pump from MAGNETI MARELLI producer Original Water Pump from RIDEX producer Original Water Pump from HELLA producer Original Water Pump from PIERBURG producer Original Water Pump from AISIN producer Original Water Pump from FRECCIA producer
Original Water Pump from INA producer Original Water Pump from DAYCO producer Original Water Pump from ASHIKA producer Original Water Pump from SKF producer Original Water Pump from THERMOTEC producer Original Water Pump from HERTH+BUSS JAKOPARTS producer Original Water Pump from VEMO producer Original Water Pump from DOLZ producer
Top quality parts Water Pump for your car
Buy SKF Water Pump VKPC 81269 for car at low price £ 30,40
-23%
£ 30,40
£ 39,48
incl. 20% VAT, Shipping
x Water Pump | SKF VKPC 81269
Parts Details
  • Number of Teeth: 19
  • Water Pump Type: for toothed belt drive
In stock Details
Article №: R179RS
Buy DOLZ Water Pump R179RS for car at low price £ 15,77
-23%
£ 15,77
£ 20,48
incl. 20% VAT, Shipping
x Water Pump | DOLZ R179RS
Parts Details
  • for OE number: 210107370R
  • Heavy Duty Version:
In stock Details
Buy FEBI BILSTEIN Water Pump 01286 for car at low price £ 14,41
-23%
£ 14,41
£ 18,72
incl. 20% VAT, Shipping
x Water Pump | FEBI BILSTEIN 01286
Parts Details
  • Observe service information:
  • Weight [kg]: 0,787
  • Number of Wings: 6
  • Material: Cast Aluminium
  • Water pump impeller material: Metal
  • Seal Material: Paper
In stock Details
Article №: 352316170321
Buy MAGNETI MARELLI Water Pump 352316170321 for car at low price £ 24,82
-23%
£ 24,82
£ 32,24
incl. 20% VAT, Shipping
x Water Pump | MAGNETI MARELLI 352316170321
Parts Details
In stock Details
Article №: 1260W0091
Buy RIDEX Water Pump 1260W0091 for car at low price £ 15,77
-23%
£ 15,77
£ 20,48
incl. 20% VAT, Shipping
x Water Pump | RIDEX 1260W0091
Parts Details
  • Number of Teeth: 19
  • Water Pump Type: for toothed belt drive
In stock Details
Buy SKF Water Pump VKPC 88617 for car at low price £ 25,01
-23%
£ 25,01
£ 32,48
incl. 20% VAT, Shipping
x Water Pump | SKF VKPC 88617
Parts Details
  • Water Pump Type: for v-ribbed belt use
In stock Details
Buy SKF Water Pump VKPC 86609 for car at low price £ 28,86
-23%
£ 28,86
£ 37,48
incl. 20% VAT, Shipping
x Water Pump | SKF VKPC 86609
Parts Details
  • Water Pump Type: for v-belt use
In stock Details
Buy RIDEX Water Pump 1260W0018 for car at low price £ 14,23
-23%
£ 14,23
£ 18,48
incl. 20% VAT, Shipping
x Water Pump | RIDEX 1260W0018
Parts Details
  • Number of Teeth: 19
  • Impeller Diameter [mm]: 63
  • Supplementary Article/Supplementary Info: with gaskets/seals
  • Specification: 8 vane impellor, round profile teeth
In stock Details
  • Contacts
  • TOS
  • Privacy Policy
  • Company
  • Payment
  • Shipping
  • Return of goods
  • Replacement