#cooling
5 posts in Car Diagnostics blog about "cooling" — OBD-II diagnostics, DTC codes, repair. ← All posts
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The thermostat: two ways to fail and two very different consequences
Stuck open, a thermostat never lets the engine warm; stuck closed, it destroys it. The signs of each and what diagnostics shows.
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Heat and cars: what fails in summer and why then
Summer loads a car no less than winter, just differently. What suffers from heat and what to check before it arrives.
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Coolant: why colours must not be mixed and what to do if they were
Coolant colour guarantees nothing — the additive package is what matters. The types, the consequences of mixing, and how it shows up in diagnostics.
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The cooling fan will not run: where to look
The fan is the last line of defence against overheating. How to test it in two minutes and why the fan itself is usually innocent.
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The water pump: the signs that appear before the engine boils
A water pump rarely fails suddenly — it weeps and whines in advance. The warning signs and why it is replaced with the timing belt.