VW Golf overheating due to a newly fitted water pump that failed. Cheap part broke down and blocked coolant flow. We replaced it properly at 1Stop Motor Shop.
A customer brought their VW Golf into 1Stop Motor Shop in Newtownabbey, complaining that the engine was overheating badly — despite the fact that the timing belt and water pump had just been replaced elsewhere.
After carrying out a full inspection, we found the newly fitted water pump had failed internally. It had broken apart inside, causing a blockage in the coolant system and pushing the sleeve out of position, preventing proper water flow.
Unfortunately, low-quality aftermarket parts don’t always match OEM standards. The internal seals, plastics, and materials often degrade quicker — especially under heat and pressure.
Here’s what happened:
The impeller or internals of the pump failed
Coolant couldn’t circulate
Engine overheated
The water pump sleeve shifted and blocked flow
The new part caused more damage than it solved
Removed the faulty water pump
Flushed and cleaned the coolant system
Replaced the pump with a reliable, high-quality brand
Checked timing belt alignment
Ran system pressure tests and refilled coolant
The car is now back on the road and running cool — but this is a perfect example of why we never cut corners on parts at 1Stop Motor Shop.
At our garage, you’ll get:
Quality timing belt kits
Reliable water pump replacements
Full system flush and diagnostics
Work done by experienced, qualified mechanics
No cheap parts that’ll leave you stranded
Book your cooling system check today. Trusted by drivers across Belfast - how to contact us:
- Call/WhatsApp (phone and text): 07951 728365
- DM our socials (Facebook & Instagram)
- Email: OneStopMotorShop@hotmail.com
- Contact us via our website
