Motorsector Streatham · Streatham, SW16 5LU

Cooling-system diagnosis and overheating repairs

Q: Can I drive a short distance while the engine is overheating?

Do not continue if the temperature warning is active or steam is present. Severe engine damage can occur quickly.

Q: Why does coolant keep disappearing?

Possible causes include an external leak, pressure-cap fault, water pump, heater matrix or internal engine leak.

Q: Can I mix coolant types?

Use the manufacturer-specified coolant. Mixing incompatible products can reduce protection or create deposits.

Q: Does overheating always mean a head-gasket failure?

No. Many other faults can cause overheating, but tests may be needed to assess internal leakage.

Overheating or repeated coolant loss can quickly damage an engine. MotorSector pressure-tests and inspects the cooling system to identify leaks, circulation problems, fan faults and signs of internal engine damage.

Call 020 3981 1781

Vehicle cooling-system inspection and repair

WorkshopCooling-system repairs

Inspected, estimated and approved before work begins at our Streatham workshop.

Common reasons to book

Temperature warning or gauge rises above normal
Coolant level repeatedly drops
Steam, visible leak or sweet smell
Cabin heater stays cold
Cooling fan runs continuously or does not run
White exhaust smoke or contaminated coolant is suspected

What Motorsector can help with

Cooling-system pressure testing
Radiator, hose and expansion-tank repairs
Thermostat and water-pump diagnosis
Cooling-fan and temperature-sensor testing
Coolant replacement using the correct specification
Heater-performance investigation
Cylinder-head-gasket assessment where symptoms indicate

How the process works

01
Vehicle is booked
02
Vehicle is inspected or tested
03
Findings are documented
04
Estimate is supplied
05
Customer approves work
06
Repair is completed
07
Final paperwork is provided

Why choose Motorsector

AA Approved Garage
IMI-qualified technical capability
Advanced diagnostic equipment
Video inspections where appropriate
Clear approval process
Quality parts
Parts and labour guarantee where applicable
Streatham workshop

Relevant trust marks

Only marks that apply to this service are shown. Click a logo to read a short explanation.

AA Approved Garage

Motorsector is an AA Approved Garage. This accreditation reflects recognised workshop standards, clear estimates and customer-care expectations for MOT, servicing and repairs from our Streatham premises.

Frequently asked questions

Can I drive a short distance while the engine is overheating?

Why does coolant keep disappearing?

Can I mix coolant types?

Does overheating always mean a head-gasket failure?

Ready to book?

Book online through our workshop booking system, request a quote, or call the Streatham team.