On Tuesday, May 25, 2021 at 8:07:56 PM UTC-4, wrote:
On Tuesday, May 25, 2021 at 6:54:58 PM UTC-5, Thomas wrote:
On Tuesday, May 25, 2021 at 7:48:03 PM UTC-4, Thomas wrote:
On Tuesday, May 25, 2021 at 7:32:46 PM UTC-4, trader_4 wrote:
On Tuesday, May 25, 2021 at 6:35:12 PM UTC-4, Thomas wrote:
Overheating. Had fan clutch and thermostat replaced. Mech said waterpump is fine. Had a cumbustion test done, heads are good. No visible leaks. Just ran it for 45 min and a 5 run. Heat on full blast. It is 90 here. Turned on ac and the heat gauge went up to holy ****, shut it down. Turned heat on b4 shutdown and gauge went back down. I think pump is bad. Thoughts? 2004 se with 60,000 miles. Trying to sell but will not give the next guy a headache.
On what basis did the mechanic say the pump is fine? If he took it out and looked at it
and the impeller is intact, etc, then it can't be the pump. If he said it's fine without doing
that, then it's still possible it's the pump. But pumps usually fail via the seal leaking,
not the impeller disappearing, but the latter has been known to happen. Also possible,
but not likely, that the new thermostat is bad. And like Dean said, a collapsing hose is
a possibility too, as is a plugged radiator.
Hoses new and good. There is no way the mech took off the pump to look. I am betting worn blades.
How much for a pump inxtalled? 300? 800? 2004 xterra with 60 for sale. Not a stain inside. Look marketplace facebook. I do not have an account. My wife posted it.
I have a hard time believing a water pump is bad after only 60,000 miles on a modern vehicle.

Especially this kind of failure, which would be the impeller would have to have
fallen apart or be slipping. Leaking is the common failure and like you say, 60K
is unusual even for that.

Another possibility, is he sure it's really overheating, that the temp sending unit isn't
faulty?