Waterpump/coolant circulation issue diagnostic. Need advice.
Coolant circulation issue.
My vehicle overheats rapidly after turning it on and operating the gas pedals. I have noticed that there seems to be no coolant circulation, I went uphill with my vehicle, and apparently some coolant was able to flow through bringing the huge heat spike down to almost the coolest level. Amazing it happened within seconds, but after reaching level ground again my engine only continued to rise in heat.
So circulation issue, I checked thermostat, it is working well, after that diagnosing your circulation issue is pretty minimal. Clogged radiator, a bad thermostat, or a waterpump failure causing circulation issues.
I have already bought all the things required to complete a full waterpump replacement, and I was just wondering if there is any sure fire way in testing that it is in fact a waterpump failure before proceeding with replacing the waterpump?